Polydimethylsiloxane = PDMS = Dimethylpolysiloxane = Dimethicone

CAS number : 63148-62-9
E number: E900 (glazing agents, ...)
Molecular Formula: [-Si(CH3)2O-]n
Molecular Weight: 236.53358000

Polydimethylsiloxane (PDMS), also known as dimethylpolysiloxane or dimethicone, belongs to a group of polymeric organosilicon compounds that are commonly referred to as silicones. 
Polydimethylsiloxane (PDMS) is the most widely used silicon-based organic polymer, as PMDS's versatility and properties lead to many applications.

Polydimethylsiloxane (PDMS) is particularly known for its unusual rheological (or flow) properties. 
Polydimethylsiloxane (PDMS) is optically clear and, in general, inert, non-toxic, and non-flammable. 

Polydimethylsiloxane (PDMS) belongs to a group of polymeric organosilicon compounds that are referred to as silicones and is the most widely used silicon-based organic-polymer. 
Polydimethylsiloxane (PDMS) is particularly known for Polydimethylsiloxane (PDMS)'s unusual rheological or flow properties. 
Polydimethylsiloxane (PDMS) is optically clear and inert, non-toxic, and non-flammable. 

Polydimethylsiloxane (PDMS) is one of several types of silicone oil (polymerized siloxane). 
Polydimethylsiloxane (PDMS), called PDMS or dimethicone, is a polymer widely used for the fabrication and prototyping of microfluidic chips.
Polydimethylsiloxane (PDMS) is a mineral-organic polymer (a structure containing carbon and silicon) of the siloxane family (word derived from silicon, oxygen and alkane). 

The Polydimethylsiloxane (PDMS) empirical formula is (C2H6OSi)n and Polydimethylsiloxane (PDMS)'s fragmented formula is CH3[Si(CH3)2O]nSi(CH3)3, n being the number of monomers repetitions.
Depending on the size of monomers chain, the non-cross-linked Polydimethylsiloxane (PDMS) may be almost liquid (low n) or semi-solid (high n). 
The siloxane bonds result in a flexible polymer chain with a high level of viscoelasticity.

After “cross-linking”:
Polydimethylsiloxane (PDMS) becomes a hydrophobic elastomer. 
Polar solvents, such as water, struggle to wet the Polydimethylsiloxane (PDMS) (water beads and does not spread) and this leads to the adsorption of hydrophobic contaminants from water on the material’s surface.
Polydimethylsiloxane (PDMS) is the simplest member of the silicone polymer family. 

Polydimethylsiloxane (PDMS) is formed by hydrolyzing Me2SiCl2, which is produced from high-purity SiO2 and CH2Cl2 by the Muller–Rochow reaction. 
The term “silicone” was coined by chemist F. S. Kipping in 1901.

At higher molecular weights, Polydimethylsiloxane (PDMS) is a soft, compliant rubber or resin. 
The popularity of Polydimethylsiloxane (PDMS) in microfluidics area is due to Polydimethylsiloxane (PDMS)'s excellent mechanical properties. 

Moreover, compared to other materials, Polydimethylsiloxane (PDMS) possesses superior optical properties, allowing for minimal background and autofluorescence during for fluorescent imaging.
Polydimethylsiloxane (PDMS) belongs to a group of polymeric organosilicon compounds that are commonly referred to as silicones. 
Polydimethylsiloxane (PDMS) is also called dimethylpolysiloxane or dimethicone.

Polydimethylsiloxane (PDMS) is one of several types of silicone oil (polymerized siloxane). 
Polydimethylsiloxane (PDMS) is a colorless, odorless, non-toxic and non-irritating products, chemical stability, heat resistance, cold resistance, water repellency, lubricity, high refraction, storage stability and compatibility with commonly used cosmetic ingredients.

USES and APPLICATIONS of Polydimethylsiloxane (PDMS):
Polydimethylsiloxane (PDMS)'s applications range from contact lenses and medical devices to elastomers.
Polydimethylsiloxane (PDMS) is also present in shampoos (as Polydimethylsiloxane (PDMS) makes hair shiny and slippery), food (antifoaming agent), caulking, lubricants and heat-resistant tiles.

Hydraulic fluids and related applications of Polydimethylsiloxane (PDMS):
Polydimethylsiloxane (PDMS) is used in the active silicone fluid in automotive viscous limited slip differentials and couplings.

Polydimethylsiloxane (PDMS), which is classified as a silicone, can be used for a variety of biomaterial applications, including contact lens. 
Polydimethylsiloxane (PDMS) has gained popularity as the material is used to fabricate different types of devices for studying neural stem cell behavior. 
Initial studies used Polydimethylsiloxane (PDMS) to fabricate microchips that could generate neural networks by differentiating neural stem cells into mature neurons. 

Apart from microfluidics, Polydimethylsiloxane (PDMS) is used as a food additive (E900), in shampoos, and as an anti-foaming agent in beverages or in lubricating oils.
For the fabrication of microfluidic devices, Polydimethylsiloxane (PDMS) (liquid) mixed with a cross-linking agent is poured into a microstructured mold and heated to obtain a elastomeric replica of the mold.

Polydimethylsiloxane (PDMS) is one of the most employed materials to mold microfluidic devices.
Polydimethylsiloxane (PDMS) is used in caulks, sealants, an even Silly Putty. 

More recently, Polydimethylsiloxane (PDMS) resins have been used in soft lithography, a key process in biomedical microelectromechanical systems (bio-MEMS). 
Low–molecular weight Polydimethylsiloxane (PDMS) is a liquid used in lubricants, antifoaming agents, and hydraulic fluids. 

Surfactants and antifoaming agents:
Polydimethylsiloxane (PDMS) is a common surfactant and is a component of defoamers. 
Polydimethylsiloxane (PDMS), in a modified form, is used as an herbicide penetrant and is a critical ingredient in water-repelling coatings, such as Rain-X.

Soft lithography:
Polydimethylsiloxane (PDMS) is commonly used as a stamp resin in the procedure of soft lithography, making Polydimethylsiloxane (PDMS) one of the most common materials used for flow delivery in microfluidics chips. 
The process of soft lithography consists of creating an elastic stamp, which enables the transfer of patterns of only a few nanometers in size onto glass, silicon or polymer surfaces. 

With this type of technique, Polydimethylsiloxane (PDMS) is possible to produce devices that can be used in the areas of optic telecommunications or biomedical research. 
The stamp is produced from the normal techniques of photolithography or electron-beam lithography. 
The resolution depends on the mask used and can reach 6 nm.

In biomedical (or biological) microelectromechanical systems (bio-MEMS), soft lithography is used extensively for microfluidics in both organic and inorganic contexts. 
Silicon wafers are used to design channels, and Polydimethylsiloxane (PDMS) is then poured over these wafers and left to harden. 

When removed, even the smallest of details is left imprinted in the Polydimethylsiloxane (PDMS). 
With this particular Polydimethylsiloxane (PDMS) block, hydrophilic surface modification is conducted using plasma etching techniques. 

Plasma treatment disrupts surface silicon-oxygen bonds, and a plasma-treated glass slide is usually placed on the activated side of the Polydimethylsiloxane (PDMS) (the plasma-treated, now hydrophilic side with imprints). 
Once activation wears off and bonds begin to reform, silicon-oxygen bonds are formed between the surface atoms of the glass and the surface atoms of the PDMS, and the slide becomes permanently sealed to the PDMS, thus creating a waterproof channel. With these devices, researchers can utilize various surface chemistry techniques for different functions creating unique lab-on-a-chip devices for rapid parallel testing. 

Polydimethylsiloxane (PDMS) can be cross-linked into networks and is a commonly used system for studying the elasticity of polymer networks. 
Polydimethylsiloxane (PDMS) can be directly patterned by surface-charge lithography.

Polydimethylsiloxane (PDMS) is being used in the making of synthetic gecko adhesion dry adhesive materials, to date only in laboratory test quantities.
Some flexible electronics researchers use Polydimethylsiloxane (PDMS) because of Polydimethylsiloxane (PDMS)'s low cost, easy fabrication, flexibility, and optical transparency. 

Yet, for fluorescence imaging at different wavelengths, Polydimethylsiloxane (PDMS) shows least autofluorescence and is comparable to BoroFloat glass.
Polydimethylsiloxane (PDMS) is present in shampoos (as dimethicone makes hair shiny and slippery), food (antifoaming agent) and more.

Stereo lithography:
In stereo lithography (SLA) 3D printing, light is projected onto photocuring resin to selectively cure it. 
Some types of SLA printer are cured from the bottom of the tank of resin and therefore require the growing model to be peeled away from the base in order for each printed layer to be supplied with a fresh film of uncured resin. 
Polydimethylsiloxane (PDMS) layer at the bottom of the tank assists this process by absorbing oxygen : the presence of oxygen adjacent to the resin prevents it adhering to the Polydimethylsiloxane (PDMS), and the optically clear Polydimethylsiloxane (PDMS) permits the projected image to pass through to the resin undistorted.

Medicine and cosmetics:
Activated dimethicone, a mixture of Polydimethylsiloxane (PDMS)s and silicon dioxide (sometimes called simethicone), is often used in over-the-counter drugs as an antifoaming agent and carminative. 
Polydimethylsiloxane (PDMS) has also been at least proposed for use in contact lenses.

Silicone breast implants are made out of a PDMS elastomer shell, to which fumed amorphous silica is added, encasing PDMS gel or saline solution. 
In addition, Polydimethylsiloxane (PDMS) is useful as a lice or flea treatment because of Polydimethylsiloxane (PDMS)'s ability to trap insects. 
Polydimethylsiloxane (PDMS) also works as a moisturizer that is lighter and more breathable than typical oils.

Polydimethylsiloxane (PDMS) is used variously in the cosmetic and consumer product industry as well. 
For example, Polydimethylsiloxane (PDMS) can be used in the treatment of head lice on the scalp and dimethicone is used widely in skin-moisturizing lotions where Polydimethylsiloxane (PDMS) is listed as an active ingredient whose purpose is "skin protection." 

Some cosmetic formulations use dimethicone and related siloxane polymers in concentrations of use up to 15%. 
The Cosmetic Ingredient Review's (CIR) Expert Panel, has concluded that dimethicone and related polymers are "safe as used in cosmetic formulations."

Contact lenses:
A proposed use of Polydimethylsiloxane (PDMS) is contact lens cleaning. 
Polydimethylsiloxane (PDMS)'s physical properties of low elastic modulus and hydrophobicity have been used to clean micro and nano pollutants from contact lens surfaces more effectively than multipurpose solution and finger rubbing; the researchers involved call the technique PoPPR (polymer on polymer pollution removal) and note that it is highly effective at removing nanoplastic that has adhered to lenses.

Flea treatment for pets:
Dimethicone is the active ingredient in a liquid applied to the back of the neck of a cat or dog from a small one time use dose disposable pipette. 
The parasite becomes trapped and immoblised in the substance and thus breaks the life cycle of the insect.

Polydimethylsiloxane (PDMS) is added to many cooking oils (as an antifoaming agent) to prevent oil splatter during the cooking process. 
Under European food additive regulations, Polydimethylsiloxane (PDMS) is listed as E900.

Condom lubricant:
Polydimethylsiloxane (PDMS) is widely used as a condom lubricant.
Domestic and niche uses:
Many people are indirectly familiar with Polydimethylsiloxane (PDMS) because Polydimethylsiloxane (PDMS) is an important component in Silly Putty, to which Polydimethylsiloxane (PDMS) imparts its characteristic viscoelastic properties. 

IUPAC name:

Other names:

CAS Number: 9006-65-9
n = 12: Interactive image
ChemSpider: None
ECHA InfoCard: 100.126.442
E number: E900 (glazing agents, ...)
CompTox Dashboard (EPA): DTXSID0049573

Polydimethylsiloxane (PDMS) belongs to a group of polymeric organosilicon compounds that are referred to as silicones and is the most widely used silicon-based organic-polymer. 

63148-62-9, PDMS, Dimethylpolysiloxane, Dimethicone, E900, Aeropax, Silane dimethyloxo- (9CI), Dimethyl polysiloxane, DSSTox_CID_3833, CHEMBL3182512

The rubbery, vinegary-smelling silicone caulks, adhesives, and aquarium sealants are also well-known. 
Polydimethylsiloxane (PDMS) is also used as a component in silicone grease and other silicone based lubricants, as well as in defoaming agents, mold release agents, damping fluids, heat transfer fluids, polishes, cosmetics, hair conditioners and other applications.
Polydimethylsiloxane (PDMS) can be used as a sorbent for the analysis of headspace (dissolved gas analysis) of food.

Polydimethylsiloxane (PDMS) Membranes are thin, gas permeable films for use in applications where gases need to be released for pressure or testing purposes, while keeping liquids and solids in situ. 
Polydimethylsiloxane (PDMS)s (PDMS) are used in many industrial products and processes and in a variety of consumer applications, such as coatings, polishes, detergents, personal care products, foods, and medicines. 

Polydimethylsiloxane (PDMS) Membrane applications include gas separation processes, laboratory experiments and medical research that requires a gas permeable and liquid impermeable thin film membrane. 
Gas permeable Polydimethylsiloxane (PDMS) membranes are ultra thin Polydimethylsiloxane (PDMS), silicone or Polydimethylsiloxane (PDMS) film products which can be used as a barrier to liquid and permeable path for various gaseous elements and compounds.
Polydimethylsiloxane (PDMS) is also used as active ingredient in a variety of automotive, furniture, metal, leather and specialty polishes, Sewing thread using silicone oil etc..

Applications of Polydimethylsiloxane (PDMS):
-Component of defoamers
-Ingredient in water-repellent coatings
-Plasticizer in silicone sealants
-Stamp resin in the procedure of soft-lithography
-Lubricant in condoms
-A component in silicone grease
-A component in heat-transfer fluids
-A component in mold-release agents
-Sorbent for the analysis of head-space
-Mechanical silicone oil
-Textile agent
-Sewing thread using silicone oil
-Dielectric coolant.
-Insulation and damping fluid for electrical and electronic equipment
-Release agent
-Foam control
-Ingredients for cosmetics and personal care preparations, polishes and specialty chemicals
-Plastic additives

Industrial applications of Polydimethylsiloxane (PDMS): 
Polydimethylsiloxane (PDMS) meet a wide variety of applications in many industries. 
Polydimethylsiloxane (PDMS) is good coatings additive, plastics additive, damping fluid, plastics lubricant, electrical insulating fluid, mechanical fluid, de-foaming, mold release and surface active agent for machinery, electrical appliances, and textile.

Personal care applications of Polydimethylsiloxane (PDMS):
Polydimethylsiloxane (PDMS) is ideal conditioning agent/additive for hair care products, shampoo, rinse-off conditioners, bath shower gel and other personal care and cosmetic products. 
Polydimethylsiloxane (PDMS) provides easy combing and detangling for wet and dry hair, lubricious, smooth feel as well as softness and gloss to the hair.

Structure of Polydimethylsiloxane (PDMS):
The chemical formula for Polydimethylsiloxane (PDMS) is CH3[Si(CH3)2O]nSi(CH3)3, where n is the number of repeating monomer [SiO(CH3)2] units. 
Industrial synthesis can begin from dimethyldichlorosilane and water by the following net reaction:
The polymerization reaction evolves hydrochloric acid. 

For medical and domestic applications, a process was developed in which the chlorine atoms in the silane precursor were replaced with acetate groups. 
In this case, the polymerization produces acetic acid, which is less chemically aggressive than HCl. 

As a side-effect, the curing process is also much slower in this case. 
The acetate is used in consumer applications, such as silicone caulk and adhesives.

BRANCING and CAPPING of Polydimethylsiloxane (PDMS):
Hydrolysis of Si(CH3)2Cl2 generates a polymer that is terminated with silanol groups (−Si(CH3)2OH]). 

These reactive centers are typically "capped" by reaction with trimethylsilyl chloride:
2 Si(CH3)3Cl + [Si(CH3)2O]n−2[Si(CH3)2OH]2 → [Si(CH3)2O]n−2[Si(CH3)2O Si(CH3)3]2 + 2 HCl

Silane precursors with more acid-forming groups and fewer methyl groups, such as methyltrichlorosilane, can be used to introduce branches or cross-links in the polymer chain. 
Under ideal conditions, each molecule of such a compound becomes a branch point. 
Polydimethylsiloxane (PDMS) can be used to produce hard silicone resins. 
In a similar manner, precursors with three methyl groups can be used to limit molecular weight, since each such molecule has only one reactive site and so forms the end of a siloxane chain.

Well-defined Polydimethylsiloxane (PDMS) with a low polydispersity index and high homogeneity is produced by controlled anionic ring-opening polymerization of hexamethylcyclotrisiloxane. 
Using this methodology Polydimethylsiloxane (PDMS) is possible to synthesize linear block copolymers, heteroarm star-shaped block copolymers and many other macromolecular architectures.

Polydimethylsiloxane (PDMS) is manufactured in multiple viscosities, ranging from a thin pourable liquid (when n is very low), to a thick rubbery semi-solid (when n is very high). 
Polydimethylsiloxane (PDMS) molecules have quite flexible polymer backbones (or chains) due to their siloxane linkages, which are analogous to the ether linkages used to impart rubberiness to polyurethanes. 
Such flexible chains become loosely entangled when molecular weight is high, which results in Polydimethylsiloxane (PDMS)' unusually high level of viscoelasticity.

MECHANICAL PROPERTIES of Polydimethylsiloxane (PDMS):
Polydimethylsiloxane (PDMS) is viscoelastic, meaning that at long flow times (or high temperatures), Polydimethylsiloxane (PDMS) acts like a viscous liquid, similar to honey. 
However, at short flow times (or low temperatures), Polydimethylsiloxane (PDMS) acts like an elastic solid, similar to rubber. 

Viscoelasticity is a form of nonlinear elasticity that is common amongst noncrystalline polymers. 
The loading and unloading of a stress-strain curve for Polydimethylsiloxane (PDMS) do not coincide; rather, the amount of stress will vary based on the degree of strain, and the general rule is that increasing strain will result in greater stiffness. 

When the load itself is removed, the strain is slowly recovered (rather than instantaneously). 
This time-dependent elastic deformation results from the long-chains of the polymer. 

But the process that is described above is only relevant when cross-linking is present; when it is not, the polymer Polydimethylsiloxane (PDMS) cannot shift back to the original state even when the load is removed, resulting in a permanent deformation. 
However, permanent deformation is rarely seen in PDMS, since Polydimethylsiloxane (PDMS) is almost always cured with a cross-linking agent.  

If some Polydimethylsiloxane (PDMS) is left on a surface overnight (long flow time), Polydimethylsiloxane (PDMS) will flow to cover the surface and mold to any surface imperfections. 
However, if the same Polydimethylsiloxane (PDMS) is poured into a spherical mold and allowed to cure (short flow time), Polydimethylsiloxane (PDMS) will bounce like a rubber ball. 

The mechanical properties of Polydimethylsiloxane (PDMS) enable this polymer to conform to a diverse variety of surfaces. 
Since these properties are affected by a variety of factors, this unique polymer is relatively easy to tune. 

This enables PDMS to become a good substrate that can easily be integrated into a variety of microfluidic and microelectromechanical systems. 
Specifically, the determination of mechanical properties can be decided before Polydimethylsiloxane (PDMS) is cured; the uncured version allows the user to capitalize on myriad opportunities for achieving a desirable elastomer. 

Generally, the cross-linked cured version of PDMS resembles rubber in a solidified form. 
Polydimethylsiloxane (PDMS) is widely known to be easily stretched, bent, compressed in all directions. 

Depending on the application and field, the user is able to tune the properties based on what is demanded.
Overall Polydimethylsiloxane (PDMS) has a low elastic modulus which enables Polydimethylsiloxane (PDMS) to be easily deformed and results in the behavior of a rubber. 

Viscoelastic properties of Polydimethylsiloxane (PDMS) can be more precisely measured using dynamic mechanical analysis. 
This method requires determination of the material's flow characteristics over a wide range of temperatures, flow rates, and deformations. 

Because of Polydimethylsiloxane (PDMS)'s chemical stability, Polydimethylsiloxane (PDMS) is often used as a calibration fluid for this type of experiment.
The shear modulus of Polydimethylsiloxane (PDMS) varies with preparation conditions, and consequently dramatically varies in the range of 100 kPa to 3 MPa. 
The loss tangent is very low (tan δ ≪ 0.001).

CHEMICAL COMPATIBILITY of Polydimethylsiloxane (PDMS):
Polydimethylsiloxane (PDMS) is hydrophobic. 
Plasma oxidation can be used to alter the surface chemistry, adding silanol (SiOH) groups to the surface. 
Atmospheric air plasma and argon plasma will work for this application. 
This treatment renders the Polydimethylsiloxane (PDMS) surface hydrophilic, allowing water to wet it. 
The oxidized surface can be further functionalized by reaction with trichlorosilanes. 

After a certain amount of time, recovery of the surface's hydrophobicity is inevitable, regardless of whether the surrounding medium is vacuum, air, or water; the oxidized surface is stable in air for about 30 minutes. 
Alternatively, for applications where long-term hydrophilicity is a requirement, techniques such as hydrophilic polymer grafting, surface nanostructuring, and dynamic surface modification with embedded surfactants can be of use.

Solid Polydimethylsiloxane (PDMS) samples (whether surface-oxidized or not) will not allow aqueous solvents to infiltrate and swell the material. 
Thus Polydimethylsiloxane (PDMS) structures can be used in combination with water and alcohol solvents without material deformation. 

However most organic solvents will diffuse into the material and cause it to swell. 
Despite this, some organic solvents lead to sufficiently small swelling that they can be used with Polydimethylsiloxane (PDMS), for instance within the channels of Polydimethylsiloxane (PDMS) microfluidic devices. 

The swelling ratio is roughly inversely related to the solubility parameter of the solvent. 
Diisopropylamine swells Polydimethylsiloxane (PDMS) to the greatest extent; solvents such as chloroform, ether, and THF swell the material to a large extent. 

Solvents such as acetone, 1-propanol, and pyridine swell the material to a small extent. 
Alcohols and polar solvents such as methanol, glycerol and water do not swell the material appreciably.

Polydimethylsiloxane (PDMS) OXIDATION: 
Polydimethylsiloxane (PDMS) oxidation using plasma changes the surface chemistry, and produces silanol terminations (SiOH) on its surface. 
This helps making the material hydrophilic for thirty minutes or so. 

This process also makes the surface resistant to the adsorption of hydrophobic and negatively-charged molecules. 
In addition, Polydimethylsiloxane (PDMS)'s plasma oxidation is used to functionalize the surface with trichlorosilane or to covalently bond Polydimethylsiloxane (PDMS) (at the atomic scale) on an oxidized glass surface by the creation of a Si-O-Si bonds.

Whether the surface is plasma oxidized or not, Polydimethylsiloxane (PDMS) does not allow water, glycerol, methanol or ethanol infiltration and consecutive deformation. 
Thus, Polydimethylsiloxane (PDMS) is possible to use PDMS with these fluids without fear of micro-structure deformation. 
However, Polydimethylsiloxane (PDMS) deforms and swells in the presence of diisopropylamine, chloroform and ether, and also, to a lesser extent, in the presence of acetone, propanol and pyridine – therefore, Polydimethylsiloxane (PDMS) is not ideal for many organic chemistry applications.

PHYSICAL and CHEMICAL PROPERTIES of Polydimethylsiloxane (PDMS):
Appearance Form: viscous
Colour: colourless
Odour: No data available
Odour Threshold: No data available
pH: No data available
Melting point/freezing point
Melting point: -55 °C

Initial boiling point and boiling range: > 140 °C at 0,003 hPa
Flash point 316,00 °C - closed cup
Evaporation rate: No data available
Flammability (solid, gas): No data available
Upper/lower flammability or explosive limits: No data available
Vapour pressure: < 7 hPa at 25 °C
Vapour density: No data available

Relative density: 0,970 g/cm3
Water solubility: slightly soluble
Partition coefficient: n-octanol/water: No data available
Auto-ignition temperature: > 400 °C
Decomposition temperature: > 200 °C -
Viscosity: No data available
Explosive properties: No data available
Oxidizing properties: No data available

Density: 1 g/mL at 20 °C
Vapor pressure: 5 mm Hg ( 20 °C)
Refractive index: n20/D 1.406
Flash point: >101°C
Storage temp.: room temp
Solubility: Practically insoluble in water, very slightly soluble or practically insoluble in anhydrous ethanol, practically insoluble in methanol, partly miscible with ethyl acetate, with methylene chloride, with methyl ethyl ketone and with toluene.

Form: emulsion
Color: Colorless
Molecular Weight: 236.53358000
Assay: 95.00 to 100.00
Food Chemicals Codex Listed:    No
Specific Gravity: 0.96300 @ 25.00 °C.
Refractive Index: 1.40400 @ 20.00 °C.
Flash Point: 600.00 °F. TCC ( 315.56 °C. )

FIRST AID MEASURES of Polydimethylsiloxane (PDMS):
-Description of first aid measures:

General advice:
Consult a physician. 
Show this safety data sheet to the doctor in attendance.

If inhaled:
If breathed in, move person into fresh air. 
If not breathing, give artificial respiration.
Consult a physician.

In case of skin contact:
Wash off with soap and plenty of water. 
Consult a physician.

In case of eye contact:
Flush eyes with water as a precaution.

If swallowed:
Never give anything by mouth to an unconscious person. 
Rinse mouth with water. 
Consult a physician.

-Indication of any immediate medical attention and special treatment needed:
No data available

-Personal precautions, protective equipment and emergency procedures:
Use personal protective equipment. 
Ensure adequate ventilation.

-Environmental precautions:
Do not let product enter drains.

-Methods and materials for containment and cleaning up:
Keep in suitable, closed containers for disposal.

FIRE FIGHTING MEASURES of Polydimethylsiloxane (PDMS):
-Extinguishing media:
Suitable extinguishing media:
Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide.

-Advice for firefighters:
Wear self-contained breathing apparatus for firefighting if necessary.

-Further information:
No data available

-Control parameters:
Components with workplace control parameters:
-Exposure controls:

--Appropriate engineering controls:
Handle in accordance with good industrial hygiene and safety practice. 
Wash hands before breaks and at the end of workday.

--Personal protective equipment:
Eye/face protection:
Safety glasses with side-shields conforming to EN166 Use equipment for eye protection tested and approved under appropriate government standards such as NIOSH (US) or EN 166(EU).

Skin protection:
Handle with gloves. 
Gloves must be inspected prior to use. 
Use proper glove removal technique (without touching glove's outer surface) to avoid skin contact with this product. 
Wash and dry hands.
The selected protective gloves have to satisfy the specifications of Regulation (EU) 2016/425 and the standard EN 374 derived from it.

Respiratory protection:
If the respirator is the sole means of protection, use a full-face supplied air respirator. 
Use respirators and components tested and approved under appropriate government standards such as NIOSH (US) or CEN (EU).

Control of environmental exposure:
Do not let product enter drains.

HANDLING AND STORAGE of Polydimethylsiloxane (PDMS):
-Conditions for safe storage:
Keep container tightly closed in a dry and well-ventilated place. 
Store in cool place.

STABILITY and REACTIVITY of Polydimethylsiloxane (PDMS):
Reactivity: No data available
Chemical stability: Stable under recommended storage conditions.
Possibility of hazardous reactions: No data available
Conditions to avoid: No data available
Other decomposition products: No data available

Molecular Weight: 74.15     
Hydrogen Bond Donor Count: 0     
Hydrogen Bond Acceptor Count: 1     
Rotatable Bond Count: 0     
Exact Mass: 74.018791345     
Monoisotopic Mass: 74.018791345     
Topological Polar Surface Area: 17.1 Ų 
Heavy Atom Count: 4     
Formal Charge: 0 
Complexity: 29     
Isotope Atom Count: 0     
Defined Atom Stereocenter Count: 0     
Undefined Atom Stereocenter Count: 0     
Defined Bond Stereocenter Count: 0     
Undefined Bond Stereocenter Count: 0     
Covalently-Bonded Unit Count: 1     
Compound Is Canonicalized: Yes     

Silicone oil
Silicone fluid
Silane, dimethyloxo-
Silane,dimethyloxo- (9CI)
EINECS 256-344-9
Dimethyl polysiloxane
Polydimethylsiloxane (silicone)
(6-7% Diphenylsiloxane)-(0.1-0.2% vinylmethylsiloxane)-(dimethylsiloxane) copolymer@CRLFMFCD00284853
Polydimethylsiloxane, monocarbinol terminated
Poly(dimethylsiloxane), monocarbinol terminated
Poly(dimethylsiloxane), monohydroxyethyleneoxypropyl terminated

Regulatory process names:

IUPAC names:
Dimethyl polysiloxane
Polydimethylsiloxane gum

Other names:
Dimethyl polysiloxane

Other identifiers:

Octamethyltrisiloxane [ACD/IUPAC Name]
107-51-7 [RN]
203-497-4 [EINECS]
MFCD00008264 [MDL number]
Octamethyltrisiloxan [German] [ACD/IUPAC Name]
Octaméthyltrisiloxane [French] [ACD/IUPAC Name]
Trisiloxane, 1,1,1,3,3,5,5,5-octamethyl- [ACD/Index Name]
[(CH3)3SiO]2Si(CH3)2 [Formula]
[107-51-7] [RN]
dimethylpolysiloxane, technical
dimeticona; dimeticone; dimeticonum
Dow Corning High-Vacuum Grease
EINECS 203-497-4
melting point bath oil
octamethyl trisiloxane
octamethyltrisiloxane, ???
Polydimethylsiloxane, 1000 cSt.
Silane, dimethylbis(trimethylsiloxy)-
silicone fluid, 100
silicone fluid, 1000
silicone fluid, 500
viscosity 1.0 cSt.
viscosity 1.000.000 cSt.
viscosity 1.5 cSt.
viscosity 10 cSt.
viscosity 100 cSt.
viscosity 100.000 cSt.
viscosity 10000 cSt.
viscosity 12.500 cSt.
viscosity 2.0 cSt.
viscosity 2.500.000 cSt.
viscosity 20 cSt.
viscosity 20.000 cSt.
viscosity 20.000.000 cSt.
viscosity 200 cSt.
viscosity 3.0 cSt.
viscosity 300.000 cSt.
viscosity 30000 cSt.
viscosity 350 cSt.
viscosity 5.0 cSt.
viscosity 5.000 cSt.
viscosity 50 cSt.
viscosity 500 cSt.
viscosity 60.000 cSt.
viscosity 600.000 cSt.
viscosity 60000 cSt.
viscosity 7.0 cSt.

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