Alpha olefin sulfonate = AOS
CAS number: 68439-57-6
Molecular Weight298.42 - 344.49
Alpha olefin sulfonates (AOS) are a group of anionic surfactants, which are used as detergents.
Alpha olefin sulfonates contain a - mostly linear, primary - alkyl R and a monovalent cation M, preferably sodium.
The most frequently used example of this group of substances is sodium α-olefin sulfonate (INCI: Sodium C14-16 Olefin Sulfonate).
Alpha olefin sulfonate mainly be used in mild detergent and products for personal care.
Alpha olefin sulfonate can also be used as industrial detergents.
Alpha olefin sulfonate production and composition:
Alpha olefin sulfonates are produced by sulfonation of alpha-olefins, typically using sulfur trioxide.
Subsequent alkaline hydrolysis gives a mixture of alkene sulfonates (60-65%) and hydroxyalkane sulfonates (35-40%).
The commercially available olefin sulfonates are mostly solutions with about 40% active ingredient content.
Alpha olefin sulfonate description
In addition to a longer hydrocarbon chain in which there must be at least one double bond (hence the name "olefin"), Alpha olefin sulfonate has an anionic sulfonate headgroup with a sodium ion as a counterion.
The sulfonate group is negative in aqueous solution, which is why the α-olefin sulfonates are among the anionic surfactants.
In contrast to most other surfactants in which the C12-alkyl chains have the highest surface activity, olefin sulfonates shows maximal activity when using C14and C16-olefins.
Alpha olefin sulfonate usage
Alpha olefin sulfonates with linear alkenyl radicals from C12 to C18 are used as anionic surfactants in various areas of application due to their pronounced foam formation[clarification needed] and foam stability (even with high water hardness), excellent fat-dissolving power and oil dissolving power as well as a favorable ecological profile and low aquatic toxicity and human toxicity.
Alpha olefin sulfonates are being used for example in detergents and cleaning agents, for degreasing, in the emulsion polymerization, the conditioning of concrete and mortar as well as in the formulation of pesticides.
Alpha olefin sulfonates (AOS) have been used successfully for many years in laundry and personal-care products throughout Asia.
Among their documented positive attributes are good cleaning and high foaming in both soft and hard water, rapid biodegradability, and good skin mildness.
AOS has commonly been marketed as approximately 40%-active aqueous solutions.
However, with the increased importance of compact powder detergents produced by processes other than spray drying, high-active forms of AOS including 70%-active pastes and 90+%-active powders are now being utilized for that product sector.
In this regard, the rheological properties of non-Newtonian AOS and AOS/additive pastes at relevant process temperatures were measured and found potentially suitable for agglomeration processes.
Also, the relationship of AOS powder particle size to surfactant solubility at various wash conditions was examined to allow determination of the optimal size for both detergency and processing of laundry powders.
Both paste rheology and powder morphology are critical factors for the successful use of high-active AOS in compact powder detergents.
What Is Alpha olefin sulfonate?
Sodium Alpha-Olefin Sulfonates (Sodium C12-14 Olefin Sulfonate, Sodium C14-16 Olefin Sulfonate, Sodium C14-18 Olefin Sulfonate, Sodium C16-18 Olefin Sulfonate) are mixtures of long chain sulfonate salts prepared by the sulfonation of alpha olefins.
The numbers indicate the average lengths of the carbon chains of the alpha olefins.
In cosmetics and personal care products, Sodium Alpha-Olefin Sulfonates are used mainly in shampoos and bath and shower products
Why is Alpha olefin sulfonate used in cosmetics and personal care products?
Sodium Alpha-Olefin Sulfonates clean the skin and hair by helping water to mix with oil and dirt so that they can be rinsed away.
Alpha Olefin Sulfonate Application of washing powder
The decontamination test showed that LAS and AOS showed good synergy in both phosphorous powder and phosphorus-free powder.
Among the phosphorous detergent, LAS: AOS has the most significant synergy at 8:2.
In the non-phosphorous washing powder with LAS and AOS as anionic active ingredients, the decontamination of AOS increased significantly when the proportion of anionic active components was greater than 20 %.
The decontamination synergy of AOS in phosphorus-free washing powder is more prominent than that in phosphorous powder.
AOS and enzymes have better solubility.
The activity of residual enzymes in detergent solutions containing domestic proteinases and imported proteinases(such as Savnase) was compared.
Over time, the residual enzyme activity of anionic active groups divided into pure LAS was low.
The residual enzyme activity is higher in detergent solution with AOS partial replacement or all substitution of LAS.
There is little difference between AOS and LAS decontamination at higher temperatures and prolonged washing(eg, 60 °C or more, 1 hour washing).
However, when washing at room temperature(10-40 °C, washing 10-29 minutes), AOS has higher decontamination power than LAS.
Compared with LAS, AOS has a strong hard water resistance, so it also shows AOS advantages in areas with higher hard water.
LAS is superior to oil/granular decontamination, while non-ions such as fatty alcohol ether are most suitable for washing dirt and dirt on the skin.
The combination of the two can achieve good decontamination effects, and AOS has good decontamination effects on sebum and oily and powdery dirt.
The amount of ash deposition on the fabric after washing the fabric with apatite washing powder containing 4 A zeolite, soda and soda.
The phosphorous washing powder that replaces LAS with AOS part is smaller than the phosphorous washing powder that uses LAS alone.
After washing, the gray deposition of the fabric is small, not easy to knot, and yellowing. (reference formula)
Alpha Olefin Sulfonate Application of Soap
Soap produces insoluble saponin in hard water, affecting the decontamination effect.
Adding AOS can increase the solubility of soap in water, and the wettability and foam power of soap liquid at low temperatures also increase rapidly.
AOS is added to soaps with sodium adipose as the main ingredient.
The various characteristics of soaps are improved, foaming force is enhanced, hard water resistance is improved, flexibility is enhanced, and cracking is not easy.
Alpha olefin sulfonate is a widely used anionic surfactant, is an effective emulsifier and has excellent foaming characteristics.
High compatibility with hard water has good wetting and foaming properties in both soft and hard water.
Alpha olefin sulfonate biodegrades rapidly and is compatible with other surfactants like LABSA and SLS.
AOS is free of skin irritants and sensitizers.
Liquid Detergents Application
Due to the large irritation of LAS, many washing products no longer use LAS as an active component, while AOS has low irritation and good biodegradability, making it a more suitable alternative.
In liquid detergents, AOS has a greater influence on the viscosity of the product.
The viscosity is improved with the commonly used fatty alcohol diethanolamide and Na-Cl.
The effect is not ideal.
The use of fatty alcohol monoethanolamide, amine oxide, betaine and NH4Cl can play a good adhesion role.
Due to the characteristics of AOS in decontamination, hard water resistance, viscosity, etc., AOS has a wide range of applications in liquid detergents with high active components.
Characteristics of Alpha Olefin Sulfonate
-Excellent surface activity.
-Alpha Olefin Sulfonate with C14 and C16 has good solubility and can be used in liquid detergents.
-Wetting force: LAS>AOS14-16>AES≈K12>AOS14-18>MES.
-Good foaming power, AOS’s foam can be suppressed with soap and so on.
-Good resistance to hard water.
-Good dispersion of calcium soap.
-Detersive power: AES(EO=3)>AOS14-16>AOS14-18>K12>LAS
Applications of Alpha Olefin Sulfonate
-Alpha Olefin Sulfonate is mainly be used in washing powder, soap and liquid detergent.
-Alpha Olefin Sulfonate can be used in personal care products such as bath lotion, hand sanitizer and cleansing milk.
-Alpha Olefin Sulfonate has been widely applied in textile printing and dyeing industry, petrochemical industry, three times oil recovery and industrial cleaning.
-AOS can be used as concrete density improver, foam agent for foam wall board and fire fighting.
-It can also be used as a pesticide emulsifier, wetting agent and so on.
Origin: Alpha Olefin Sulfonate is obtained through the sulfonation of alpha olefins which creates a mixture of long chain sulfonate salts.
Alpha olefin sulfonate is primarily made from coconut oil and ethylene.
Description: Alpha Olefin Sulfonate is in liquid form.
This is a primary cleansing surfactant, which offers better foaming and deep cleansing properties, Now with improved viscosity and which is ideal for making cosmetic products.
INCI Name: Sodium C14-16 Olefin Sulfonate
Directions For Use: Add as per the required quantity to the liquid phase.
Note: Mix gently when formulating, to prevent excessive foaming.
Important: All of our products are for external use only.
Please keep out of eyes, and out of the reach of children.
Please read and understand the appropriate technical information on the Material Safety Data Sheet and accompanying disclaimers before using this product for manufacturing.
Alpha olefin sulfonate is also Known As:
Alpha Olefin Sulfonate
Overview: Alpha Olefin Sulfonate is a mild anionic, high-foaming, and well-emulsifying surfactant.
Alpha olefin sulfonate is excellent cleansing and degreasing properties and does not dry out the skin and mucous membranes.
Alpha olefin sulfonate can be used as a foam booster and viscosity enhancer in cleansing products.
Alpha olefin sulfonate Uses:
-Personal care cleansing products
Ideal Concentration Level in Products:
Alpha olefin sulfonate can typically be used in concentrations of 4% to 30%.
AOS products are mainly applied in personal care and house products such as shampoo, bubble bath, liquid and powdered detergents, showing the characteristics of high foaming, strong detergency and resistance of hard water.
AOS products can also be used in other industrial applications, such as emulsification polymerization and dying process.
APPEARANCE: Light yellow liquid
FUNCTION: Is a 40% solution of sodium C1 4-16 alpha olefin sulfonate that offers the advantages of high foaming power, good emulsification, skin mildness and excellent lime soap dispersion. Perfect for sulfate-free personal care and detergent products.
Calsoft AOS-40; Unipol AOS-C; Sodium C14-16 Olefin Sulfonate; Alpha-OlefinC14-C16; Sulfonated Sodium Salt
STORAGE: Store in sealed containers at temperatures above 55øF (13øC). Avoid overheating or freezing.
Alpha Olefin Sulfonate Application of personal care supplies
AOS is as mild as AES, and LAS and AS are much larger than AOS.
Therefore, AOS has a wide range of uses in personal care products.
AOS is extremely stable under acidic conditions.
Normal human skin is weakly acidic (pH is about 5.5) and is suitable for using AOS as a component of personal cleaning products.
The shampoo with AOS as the main active component is better than that with K12.
Renso reported that the foam released by AOS was full of cream and felt like soap when washed.
This characteristic of Alpha olefin sulfonate is suitable for the washing habits of Chinese people.
Therefore, AOS can be used in personal care products such as bath fluids, hand sanitizer and cleansing milk.
Other Alpha Olefin Sulfonate Application
AOS has a wide range of applications in the textile printing and dyeing industry, petroleum chemicals, and three oil extraction and industrial cleaning.
AOS can be used as a concrete density modifier, foaming wall board, and fire fighting foam.
Alpha olefin sulfonate can also be used as a pesticide emulsifier, wetting agent, etc.
Alpha olefin sulfonate Scientific Facts:
Alpha-Olefin Sulfonates and their salts can be produced from the cracking of paraffin wax.
However, for large-scale production of Sodium Alpha-Olefin Sulfonates, synthesis usually occurs via the cracking of petroleum.
Surfactants are compounds commonly used in detergents that, when dissolved in a liquid such as water, reduce that liquid’s surface tension.
Anionic surfactants ionize and carry a negative charge when added to water.
This results in binding with positively charged particles within the water, improving the surfactant’s effectiveness at removing dirt and oil.
Alpha Olefin Sulfonate is a type of non-sulfate anionic surfactant widely used today in shampoos and other bath products due to its skin mildness, cleaning and foaming characteristics and its ability to mix well with water to remove dirt and oils.
C14-16 olefin sulfonate is the most commonly used variation, with 14-16 indicating the average carbon chain length.
Alpha olefin sulfonate is generally produced in industrial quantities via petroleum cracking.
AOS-40 is a 40% solution of C14-16 olefin sulfonate used in a variety of household and personal care soaps and detergents.
Alpha olefin sulfonate exhibits several beneficial attributes that make it a popular active ingredient:
Approximately 90 - 95% sulfonic acids, C14-16-alkane hydroxy and C14-16-alkene, sodium salts.
Remaining 5-10% Sodium Sulfate.
Alpha olefin sulfonate is useful as an emulsifier and foam booster in various preparations, also functions as a wetting agent.
Alpha olefin sulfonates (AOS) with various alkyl chain lengths have been used to investigate the influence of alkyl chain length on the interfacial properties at air–water, liquid paraffin–water, and parafilm–water interfaces.
Alpha olefin sulfonate was found that the critical micelle concentration decreased with increasing alkyl chain length, while the efficiency of reducing surface tension was inverse relationship with alkyl chain length.
The diffusion coefficient obviously reduced with an increase of surfactant concentration and alkyl chain length.
The C14-16AOS shows better wettability and emulsification than C16-18AOS and C20-24AOS.
For foaming properties, the foamability and foam stability dramatically decreased with increasing alkyl chain length.
Stable over a wide pH range
Cold water soluble
Hard water compatible
Mild on skin
Good foaming agent
Compatible with other surfactants
Alpha olefin sulfonate can be used for sulfate-free products
Sodium C-14 C-16 Alpha Olefin Sulfonate (Also known as AOS 40) Liquid Surfactant
Our versatile sodium C-14 C-16, ChemConx AOS 40 is a 40%, an anionic biodegradable aqueous solution of sodium olefin (C-14 C-16) sulfonate, is an ideal surfactant for a variety of personal care and household and industrial applications. This versatile product can be an excellent base for all kinds of popular products including hand soaps, shampoos, and bath products. It offers formulators excellent viscosity and foam characteristics, as well as improved mildness over lauryl sulfates. ChemConx AlOS-40 is more stable than alcohol sulfates over a broad pH range.
AOS, also known as Alpha Olefin Sulfonate liquid offers the advantages of high foaming power, good emulsification, skin mildness and excellent lime soap dispersion.
Alpha olefin sulfonate is the choice for sulfate-free personal care and detergent products.
An Excellent choice for manufacturing economical, high performing sulfate-free, biodegradable shampoo and body wash formulas, hand soaps, pet care formulations, even works exceptionally well in industrial and household cleaners, and car and truck wash products.
A great all around performer.
We also offer the dry version of this, called Bioterge AS 90 here
Chemconx AOS-40 is compatible with other anionic, amphoteric, and nonionic surfactants.
Sodium C14-C16 Olefin Sulfonate 40% Solution
Formulations using AOS-40:
-Conditioning Liquid Hand Soap
-Earth Friendly Body Wash
-Phosphate Free Car Wash Soap
-Premium Sulfate Free Shampoo
-Simple Sulfate Free Shampoo
-Sulfate Free Pet Shampoo
AOS-40, also known as Alpha Olefin Sulfonate 40, and Sodium C14 C 16, is a 40% aqueous solution of sodium olefin sulfonate.
Alpha olefin sulfonate is an ideal surfactant for a variety of detergent and personal care applications including hand soaps, shampoos, and bath products.
Alpha olefin sulfonate offers formulators excellent viscosity and foam characteristics, as well as improved mildness over lauryl sulfates.
Alpha olefin sulfonate is more stable than alcohol sulfates over a broad pH range.
Alpha olefin sulfonate description: Mild anionic, high-foaming & well-emulsifying surfactant.
Made primarily from coconut oils.
Stable at a wide pH range and can therefore be used in acidic environments.
pH: 8 (10% solution), 40% active substances.
Yellowish liquid, slightly viscous, faint odor.
INCI Name: Sodium C14-16 alpha olefin sulfonate
Mild primary surfactant with excellent cleansing and degreasing properties (but non-drying on skin & mucous membranes)
Good wetting effect, foam booster, slight viscosity enhancer
Easily compatible with other surfactants including non-ionic, amphoteric or anionic co-surfactants
Alpha olefin sulfonate can be used for making sulfate-free cleansing products
Product NameSodium C14-16 Olefin Sulfonate
SynonymsSodium C14-16 Alpha Olefin Sulfonate
Molecular Weight298.42 - 344.49
Appearancewhite or light yellow powder
Alpha olefin sulfonates generally commercially made by reacting SO3 with alpha olefins followed by neutralization and saponification with base (typically sodium hydroxide), and subsequently bleaching, characteristically may contain by-product impurities which are non-sulfonate sulfur containing organic compounds.
These impurities chiefly sultones, can be substantially completely eliminated by the process sequence of the present disclosure which involves heating and bleaching and pH adjustment under specified conditions.
Surprisingly, such and similar organic sulfurous impurities are eliminated during such heating and do not reform under such bleaching and pH adjustment.
Use: Can be added to formulas as is.
Recommended use level is 4-30% depending on desired foaming and cleansing effects.
For external use only.
Applications: Body washes, shampoos, bubble baths, cleansing lotions, various personal care cleansing products.
Country of Origin: USA
Raw material source: Ethylene, coconut oil
Manufacture: Alpha olefin suflonate is a mixture of long chain sulfonate salts prepared by the sulfonation of alpha olefins.
Alpha-olefin sulfonate are produced by oligomerization of ethylene and by Fischer-Tropsch synthesis followed by purification.
Animal Testing: Not animal tested
GMO: GMO free (does not contain plant-derived components)
Vegan: Does not contain animal-derived components
Univar Solutions is here to serve your alpha olefin sulfonate 40% needs.
With more than 120 distribution centers, our private fleet, technical expertise, and professional staff, we provide you proven reliability and quality service at every touchpoint.
In some shampoos sodium C14-16 olefin sulfonate is being introduced as an alternative for sodium laureth sulfate without sulfate.
Some groups and sellers suggest that it is better for someones health, but for this claim is no evidence.
Alpha Olefin Sulfonate 40% (AOS 40%) is a formaldehyde free solution of sodium C14-C16 alpha olefin sulfonate preserved with MCI/MI.
Alpha olefin sulfonate can be used in variety of applications due to its excellent viscosity, hard water stability, detergency, foam characteristics, and pH stability over a broad pH range.
AOS 40% is a milder surfactant compared to lauryl sulfates and is used in high performing sulfate-free, shampoos, body wash, hand soap and pet care formulations.
Alpha olefin sulfonate is highly effective in unloading undesirable liquids and particulates from gas producing wells and exhibits exceptional thermal stability up to 400° F.
Alpha olefin sulfonate is readily biodegradable.
Alpha olefin sulfonate 40% is a pale yellow 40% aqueous solution of sodium C14-16 alpha olefin sulfonate.
Alpha olefin sulfonate combines the advantages of high foaming power, good emulsification, mildness to the skin, and excellent lime soap dispersion to give the formulator maximum flexibility in the preparation of light and heavy-duty cleaners.
Alpha olefin sulfonate is also suitable for use in acidic formulations such as those containing alpha hydroxyl acids or salicylic acid.
AOS-40 is perfect for sulfate-free personal care and detergent products.
Witconate AOS-12 is an alpha-olefin sulfonate surfactant that has been specially produced by Witco to exhibit enhanced foaming performance characteristics in extremely high temperature environments.
As a result, Witconate AOS-12 exhibits exceptional thermal stability in addition to outstanding solubility and foam height stability in fresh water systems.
Alpha Olefin is an olefin featured by the position of solid bond (reactive unsaturation) at the two end carbons in carbon chains.
Alpha olefins and their derivatives are used as comonomers in polymer such as low density polyethylenes for the properties of lighter, thinner, better flexibility and more tearing resistance.
They are used in the production of linear plasticizers, oxo-alcohols, motor fuels, lubricants, automotive additives, biodegradble surfactants, paper size, and in a wide range of specialty applications in the production of mercaptans, flavors and fragrances, alkyl metals, halides, alkyl silanes.
Alpha olefin sulfonate APPLICATIONS
-Economical and high-performing sulfate free,
-Hand soaps and shower gels
-Car washing compounds
-Light-duty liquid detergents
-Heavy-duty laundry detergents
Alpha olefin sulfonate BENEFITS
-Excellent cost/performance characteristics and foam properties
-Improved mildness over lauryl sulfates
-Excellent viscosity and foam characteristics
-More stable than alcohol sulfates over a broad pH range
-Fully compatible with other anionic, amphoteric and nonionic surfactants
-Whole Foods Market® Eco-Scale™ ingredient
Suggested Usage Rate: 20-60% of your entire formulation.
Alpha Olefin Sulfonate (AOS) surfactants have been commercially available in the United States since 1965.
They have been formulated into a variety of detergents and shampoo products.
AOS surfactants are oftenselected as replacements for linear alkylbenzene sulfonates, due to their biodegradation, foaming, detergency, and mildness properties.
The Stepan AOS products identified above are linear in structure, with carbon chain lengths ranging from C12 to C18.
Published information on AOS surfactants shows that primary biodegradation of these compounds can reach 100% in 3 to 5 days under laboratory conditions.
AOS surfactants have also been found to undergo extensive biodegradation when tested by strict European Organization for Economic Cooperation and Development (OECD) methods (301 B,C,D).
Ultimate biodegradation of AOS in excess of 100% has been reported to occur within 30 days in Closed Bottle/BOD tests.
OECD Modified Sturm (OECD 301 B) testing of one of Stepan's BIO-TERGE AS-40, showed this product to be "readily biodegradable".
Several studies have investigated the fate of AOS compounds under actual environmental conditions.
In a one year sewage treatment plant study, performed by Sekiguchi, Oba, et al., the average level of AOS in the plant's incoming waste stream was determined to be approximately 2%.
Methylene blue active/substances (MBAS) and Infrared Spectroscopy (IR) analyses of the water following activated sludge treatment showed that AOS had been completely removed.
The findings of this study and the numerous laboratory studies which have been performed over the years show that AOS surfactants are environmentally compatible.
Product Name: Alpha Olefin Sulfonate (AOS)
Synonyms: Sodium alpha-olefin Sulfonate; Bio-Terge AS-40K; α-olefin sulfonate; SODIUM A-OLEFIN SULFONATE; Alpha Olefin Sulfonate(AOS); SODIUMC14-16OLEFINSULPHONATE; sodium c14-16 olefin sulfonate; SODIUMC14-16ALPHAOLEFINSULFONATE; Sodium olefin-(C14-C16)-sulfonate; Sodium Alpha Olefin Sulphonate 92%; Sodium Alpha Olefin Sulfonate 35%, 92%
Molecular Formula: R-CH=CH-(CH2)n-SO3Na, R=C10-20
CAS NO.: 68439-57-6
EINECS No.: 270-407-8
Quality Standard: GBT 20200-2006
Package: Powder / needle form products, craft-paper bags, 25 kg net weight. Liquid form products, plastic barrels, 200 kg net weight.
Storage: Powder and needle form products, store in a cool, dry place. Avoid moisture and heat. Liquid products, avoid press.
Alpha Olefin, aka Sodium C14-16, is a great, mild anionic cleansing agent used in many sulfate-free shampoos for it’s ability to clean without stripping the hair.
Alpha olefin sulfonate’s said to work even in acidic recipes like low pH facial cleansers.
For the chem folks, it’s a mix of “long chain sulfonate salts prepared by the sulfonation of alpha olefins”.
What does this mean to you? Just know that it can “de-grease” surfaces without drying out the “skin and mucous membranes”.
Bottom line: it’s supposed to be not as harsh as regular sulfates.
Alpha olefin sulfonate has good foaming ability and is used to make everything from body wash and hand soap to shampoo.
They call it “a great all around performer” at makeyourown.
Alpha olefin sulfonate is used in shampoos.
Alpha olefin sulfonate’s a main ingredient in the upcoming (as of this writing) Ayurvedic Shampoo.
I suggest to start with about 15% for a nice shampoo.
Just a reminder by the way: shampoos are meant to clean.
Formulate it to do just that.
Just because Sodium C14-16 is a good anionic surfactant don’t think you can use it alone and get a great cleaning shampoo.
The best shampoos have a mixture of anionic, nonionic and amphoteric surfactants that work together to give the best outcome for a cleanser.
Alpha olefin sulfonates are typically created by processes such as ethylene oligomerization, or by the Fischer-Tropsch process of synthesis.
The sulphonation process starts inside a continuous thin film reactor.
High-temperature hydrolysis reacts with sultones to form a mixture of cyclic sulfonate esters and alkene sulfonic acids.
This is followed by incorporating aqueous sodium hydroxide to neutralize the mix.
Neutralization and hydrolysis are carried out in isopropanol instead of water in order to form Alpha olefin sulfonates in solid form.
Alpha olefin sulfonate features excellent cleaning and degreasing properties, strong wetting effect, foam booster, slight viscosity enhancer.
Alpha olefin sulfonate’s compatible with other surfactants, including amphoteric and non-ionic co-surfactants.
Alpha olefin sulfonate’s gentle on the skin, without drying effects, which makes it ideal for making sulfate-free cleansing products.
Those features, along with decent biodegradability, lead to the high popularity of Alpha olefin sulfonate as a cosmetic ingredient.
In general, non-sulfate anionic surfactants are gradually becoming the prime solution for use in personal care cleansing products, particularly for scalp and hair care.
Alpha Olefin Sulfonate an anionic biodegradable aqueous solution of sodium olefin (C-14 C-16) sulfonate, is an ideal surfactant for a variety of use.
Alpha olefin sulfonate can be an excellent base for all kinds of products including hand wash, shampoos, and bath products.
Alpha olefin sulfonate offers formulators excellent viscosity and foam characteristics, as well as improved mildness over lauryl sulfates.
Liquid <=40% concentrate
INCI: Sodium C14-C16 Olefin Sulfonate
The most common AOS used in cosmetics is sodium C14-16 olefin sulfonate.
Alpha olefin sulfonate can act as a detergent, emulsifier, and wetting agent.
Properly formulated, Alpha olefin sulfonate enhances viscosity, foaming properties, and the production of a stable lather.
Alpha olefin sulfonate can be added to formulas on its own, in a range of 4-30% of the final product.
The concentration depends on desired properties, such as foaming and cleansing effects.
Two years under proper storage.
Store in a dry, cool place, away from moisture and heat.
Alpha olefin sulfonate is stable at an extensive pH range and suitable for use in acidic environments.
Alpha olefin sulfonate is a chemical compound composed of long-chain sulfonate salts made by the process of sulfonation of alpha-olefins.
Alpha-olefin sulfonate is produced by oligomerization of ethylene, or by Fischer-Tropsch synthesis.
The process is followed by purification.
Industry use of Alpha olefin sulfonate
Alpha olefin sulfonate’s primary use is in washing powder, liquid detergents, and soaps.
Other applications include the textile, printing, and dyeing industries as well as the petrochemical industry.
Alpha olefin sulfonate is additionally used as an industrial foaming agent, wetting agent, concrete density improver, and pesticide emulsifier.
Alpha olefin sulfonate is commonly used as a surfactant in personal care products, such as sulfate-free shampoo, liquid and bar soaps, hand sanitizers, bath lotions, bubble baths, and facial cleansers, as well as in various household products such as dishwashing liquids and vehicle wash liquids.
Alpha olefin sulfonate is characterized by good solubility, suitable for use in liquid detergents.
Alpha olefin sulfonates or Sodium C14-16 olefin sulfonate is an anionic surfactant often found in bath, shower, and hair care cleansers.
Alpha olefin sulfonate is a mixture of long chain sulfonate salts prepared by sulfonation of C14-16 alpha olefins.
Alpha olefin sulfonate can be derived from coconut and produces a copious foam.
Alpha olefin sulfonate is a mild primary surfactant with excellent cleansing and degreasing properties.
Recommended use level is 4-30% depending on desired foaming and cleansing effects.CAS : 68439-57-6
Sodium alpha-olefin sulfonate
Sodium tetradecene sulfonate
Sodium a-olefin sulfonate
Sodium c14-16 olefin sulfonate
Alpha Olefin Sulfonate (AOS) is a kind of surfactants provide outstanding detergency, high compatibility with hard water, and good wetting and foaming properties.
AOS is free of skin irritants and sensitizers, and it biodegrades rapidly.
Alpha olefin sulfonate is used in high-quality shampoos, light-duty liquid detergents, bubble baths, and heavy-duty liquid and powder detergents.
Alpha olefin sulfonate is also used in emulsion polymerization. C14-C16 AOS blends are frequently used in liquid hand soaps.
Alpha olefin sulfonates (AOS) are efficient readily biodegradable cleaning agents that possess a high degree of chemical stability and have good water solubility characteristics.
AOS usage in consumer products in the U.S. today is mainly in liquid hand soaps with minor use in shampoos.
AOS use outside the U.S. has principal consumer applications in household cleaning and per.:;onal care products.
Current estimates indicate that AOS represents approximately I% of the total anionic surfactants utilized worldwide.
AOS products are mixtures of two major components: sodium alkene sulfonates and hydroxyalkane sulfonates with the sulfonate group in the tenninal position and the double bond or hydroxyl group located at various positions along a linear aliphatic chain.
Although actual data are limited. and the biodegradation pathways for AOS are not well defined, these compounds appear to be readily biodegraded under both laboratory and environmental conditions.
For example: influent sewage containing about 2% AOS as a fraction of lotal surfactant content has been shown to be completely cleared of AOS during passage through a sewage ueaonem plant.
In tenns of AOS impact on water quality, there are presently no standards in the U.S. or Europe specifically referring to alpha olefin suIfonates.
If present, these anionic surfactants are included among those measured in the environment using the MBAS method.
AOS is not specifically monitored in either the U.S. or Europe.
What is Alpha olefin sulfonate?
Sodium (C14-16) alpha olefin sulfonate is a gentle liquid anionic surfactant made from coconut oil.
Alpha Olefin Sulfonate (AOS) is a kind of surfactant, normal alpha olefins are excellent intermediates for producing alpha olefin sulfonate (AOS) surfactants.
Alpha olefin sulfonate provide outstanding detergency, high compatibility with hard water, and good wetting and foaming properties.
AOS is free of skin irritants and sensitizers, and it biodegrades rapidly.
Alpha olefin sulfonate is used in high-quality shampoos, light-duty liquid detergents, bubble baths, and heavy-duty liquid and powder detergents.
Alpha olefin sulfonate is also used in emulsion polymerization.
C14-C16 AOS blends are frequently used in liquid hand soaps.
One of the active ingredient used in detergents which is produced from Sulphonation of alpha olefin.
AOS is an effective emulsifier and has excellent foaming and detergency characteristics.
Superior products to conventional detergent active with regard to cold water solubility, foaming and detergency in hard water.
Because Alpha olefin sulfonate is suitable for skin care cosmetic products mostly preferred additive in shampoos, bath soaps.
The property of resistance to water hardness and other metallic ions is very good, and it is stable over a wide pH range.
Sopaltex AS is an alpha olefin sulfonate derived from linear olefins and used in foaming applications.
A multi step process involves in commercial Production of alpha olefin sulfonates from alpha olefins by reacting the olefin with dilute SO3 digesting the crude sulfonic acid mixture, neutralizing with NaOH and hydrolyzing the remaining sultones to product.
AOS can be used directly as a cleaner lubricant or as an enhancement for other lubricants.
A mixture containing a hydroxyalkane monosulfonate, an alkene monosulfonate and a small
amount of an alkene disulfonate.
Liquid detergent compositions based on water-soluble alpha-olefin sulfonate detergent preferably with a higher alcohol Ethoxylate sulfate detergent include an anti-gelling agent such as sodium chloride.
A type of surfactants having outstanding detergency, lower AOSorption on porous rocks, high compatibility with hard water.
Alpha-olefin sulfonates display a better hard water tolerance,they are used as additives in low phosphate formulas : C12-14 in liquids, C14-18 in powders.
INCI: Sodium (C14-16) alpha olefin sulfonate
Appearance: Thin yellow liquid.
Texture: Slippery, soapy liquid.
Active: Surfactant Matter
pH: 8–9 (10% in water)
Why do we use it in formulations?
Sodium (C14-16) alpha olefin sulfonate can function as a primary or complimentary cleansing surfactant in all kinds of formulations.
Strengths: Biodegradable anionic surfactant with excellent flash foam and cleansing.
I find the lather it produces to be very pillowy and luxurious.
Weaknesses: It seems to be harder to find than many other surfactants.
Alternatives & Substitutions: You’d want to start with a liquid anionic surfactant.
If the active surfactant matter is different you’ll need to adjust the formula to keep the total ASM the same.
Be sure the watch the pH of the end product as well.
How to Work with It: Include in the water phase of products. Can be hot or cold processed, as needed.
Storage & Shelf Life: Stored somewhere cool, dark, and dry,
Aquatic toxicity data report LCso values in fish ranging from 0.3mg/L to 21 mg/L, with the harlequin fish being the most sensitive.
Longer-chain AOS compounds are consistently more toxic than those with shorter alkyl chains.
Daphnia magna is the only invertebrate that has been tested, and LCso values range from 7.0 mgIL for Cl6-18AOS to 18.0 mg/L for CI4_16AOS.
Little infonnation is available on the subacute or chronic effects of AOS on aquatic organisms.
The gills appear to be the primary site of AOS toxicity.
Toxicity is directly related to changes in interfacial tension between the gill and water, since oxygen absorption is thought 10 be severely hindered when the tension decreases beyond a cenain critical point.
Protein complex fonnation between dissolved surfactants and gill surface tissues was thought to be another primary mode of action.
14C AOS accumulates primarily in the gills and secondarily in the gall bladder.
Ionic surfactants which contain hydrophobic hydrocarbon group connected with one or several hydrophilic groups dissociate into a positively charged cation and a negatively charged anion in an aqueous solution.
If the head is negatively charged to carry the surface active properties, it is called anionic surfactant, whereas a positively charged head is the carrier of the surface active properties in cationic surfactants.
Typically cationic surfactants are based on the nitrogen atom carrying the cationic charge such as amine and quaternary ammonium product.
Cationic surfactant is considered to be poor cleaners but it contributes to the fabric softening, the disinfecting properties, and the grease-water interfacial tension reducing.
Cationic surfactants include quaternary ammonium compounds, amines (primary, secondary, tertiary, diamines, polyamines, amine salts), imidazoline compounds, betaine compounds, and esterquats.
Anionic surfactant is the widely used type of surface active agent for laundry detergents, liquid cleaners and shampoos due to excellent cleaning properties particularly effective at oily soil cleaning and oil/clay soil suspension.
Anionic surfactants are deactivated in many hard water.
To prevent deactivation, builders should be dosed.
Anionic surfactant is used as a emulsifier in cosmetics, tooth paste, cream, shampoo, and acrylic binder.
Common soap is an anionic surfactant. Carboxylate, sulfate, sulfonate and phosphate are the polar groups in anionic surfactants.
Anionic surfactants include alkyl benzene sulfonate, fatty acid salts, sodium lauryl sulfate, alkyl sulfate salts, sodium lauryl ether sulfate, alpha-olefin sulfonates, phosphate esters, sulphosuccinates, alkyl phenol ether sulfates, and isethionates.
Sodium Alpha Olefin Sulfonate is used as a foaming agent combining cleaning activity for liquid soaps, washing compounds and liquid detergents.
Alpha olefin sulfonate provides acid resistance and biodegrability.
Alpha olefin sulfonate is used in emulsion polymerization.
The only study found concerning the toxicity of AOS to plants showed no significant effect on the germination or growth of tomato, barley and bean plants watered with solutions of 10. 25, or 40 mg/L AOS.
The mammalian toxicity data that are available for AOS at doses far in excess of nonnal use levels and the relative ease of AOS biodegradation indicate that the use of these surfactants does not pose a significant hazard to human health.
Their safety is recognized by the Food and Drug Administration which has approved their use as indirect food additives.
The ammonium, calcium, magnesium, potassium and sodium salts of AOS are approved for use with the stipulation that the alkyl group is in the range of ClO38 with not less than 50% in the range of C14 -16.
The alpha olefin suIfonales exhibit a moderately low order of toxicity in rodents.
AOS is slightly to severely irritating to rabbit skin depending on concemration.
Skin sensitization observed in guinea pigs has been attributed to the presence of unsaturated 1,3-suhones and chlorosuhones.
These sultones are not nonnally present in commercial formulations.
Absorption through the intact skin is minimal.
Application to the intact dorsal skin resulted in the absorption of 0.6% of the applied dose, while application of the same volume to damaged skin increased absorption SO-fold.
In human volunteers, negligible to mild skin irritation was observed in 24-hour patch tests with 1-2% active AOS samples.
Also in humans, increased irritation was nOled as the study progressed in a 10 day occlusive patch test with a 0.8% active concentration of AOS.
Positive sensitization responses reponed in one study have been attributed to the presence of unsaturated 1,3-sultones which are not oonnally present in commereial formulations.
INCI NAME Sodium C14-16 Olefin Sulfonate
CAS NUMBER 68439-57-6
LISTINGS USA (TSCA); EU (REACH); Canada (DSL); Australia (AICS); Philippines (PICCS);
ASIA-PAC; New Zealand (NZIoC); Korea (ECL); China (IECSC)
APPEARANCE: Clear Liquid: Pale Yellow to Light Amber
pH, 10% Aqueous 6.0
Active, % - 39.0
Alpha olefin sulfonates – Sulfonates with consistent product composition and minimal residual sultones