DEHYDOL LS 6

Dehydol LS 6 is a fatty alcohol that is suitable for the manufacture of heavy duty and special laundry detergents as well as hard surface cleaners.
Alcohols, C12-14, ethoxylated (68439-50-9)
 
Dehydol LS 6 is nonionic surfactant for detergent and cleaner industry
CAS NO: 68439-50-9

Chemical character    
Dehydol LS 6 is a nonionic surfactant. It is an alkyl polyethylene glycol ester made from a C12-C14-alcohol and ethylene oxide. It conforms to the following formula:

R = C12 to C14 Alkyl Dehydol LS 6: x = 6
The numeric code in the product name indicates in general the degree of ethoxilation.

Properties
Dehydol LS 6 is a cloudy liquid at room temperature and tends to form sediment.
It becomes a clear liquid at 30 °C.

Dehydol LS 6    Unit    Value
Physical form (23 °C)    Liquid
Degree of ethoxilation    approx.    6
Concentration    %    approx. 100
Cloud points (EN 1890)*        
Method A    °C    approx. 42
Method B    °C    approx. 32
Method C    °C    approx. 23
Method D    °C    approx. 77
Method E    °C    approx. 77


Average molar mass (from OH number)    g/mol: approx. 465

pH (EN 1262, solution A)**: approx.    7
Density (DIN 51757, 23 °C) g/cm3: approx.0.98
Dropping point (DIN 51801) °C: approx. 20
Congealing point (ISO 2207) °C: approx. 11

Viscosity (EN 12092, 23 °C, Brookfield, 60 rpm) mPa· s: approx. 190
Hydroxyl number (DIN 53240) mg KOH/g: approx. 120
HLB value: approx. 11.5
Flash point (ISO 2592) °C: approx. 195

Wetting(EN 1772, distilled water, 23 °C, 2 g Soda ash/l)        
0.5 g/l    s    approx. 70
1.0 g/l    s    approx. 25
2.0 g/l    s    approx. 10

Foam volume (EN 12728, 40 °C, 2 g/l water at a hardness of 1.8 mmol Ca-ions/l, after 30 s) cm3: approx. 110
Surface tension (EN 14370, 1 g/l in distilled water, 23 °C)***    mN/m: approx. 27
The above information is correct at the time of going to press. 
It does not necessarily form part of the product specification. 
A detailed product specification is available from your local BASF representative.

* Cloud point EN 1890:
Method A: 1 g of surfactant + 100 g of dist. Water
Method B: 1 g of surfactant + 100 g of NaCl solution (c = 50 g/l) 
Method C: 1 g of surfactant + 100 g of NaCl solution (c = 100 g/l) 
Method D: 5 g of surfactant + 45 g of butyldiglycol solution (c = 250 g/l) 
Method E: 5 g of surfactant + 25 g of butyldiglycol solution (c = 250 g/l)
** The pH of Dehydol LS 6 can decrease during storage, but this does not have any effect on its performance.
*** Applying Harkins-Jordan correction.
 

Solubility
Details on the solubility of Dehydol LS 6 in various solvents are given in the table below.

Solubility of Dehydol LS 6 (10% at 23 °C)
Dehydol LS 6
 
Distilled water    +
Potable water (2.7 mmol Ca2+-Ions/l)    +
Caustic msoda (5%)    –
Hydrochloric acid (5%)    +
Salt solution (5%)    +
Solvent naphtha    
Ethanol, Isopropanol    +
Aromatic hydrocarbons    +

+ = clear solution
± = sparingly soluble (insoluble sediment)
 = forms an opaque soluble, homogeneous emulsion
– = insoluble (phase separation)


Viscosity    The relationship between viscosity and temperature is always an important point to consider when Dehydol LS 6 is stored or shipped. This is shown in the following table (mPa·s, Brookfield LVT):

Viscosity at °C    0    10    20    23    30    40    50    60
Dehydol LS 6    Solid   >105    310    190    50    25    <20    <20

We would recommend the preparation of 10 – 25% stock solutions of Dehydol LS 6 if it is to be used in the form of very dilute solutions, or if it is to be added to other solutions. 
This makes it very much easier to dilute it later on.

Dehydol LS 6 can form fairly stiff gels at certain concentrations when water is added. 
The figures below were measured using a Brookfield-Viscosimeter at 23 °C and 60 rpm.

The viscosity of Dehydol LS 6 at 23 °C as a function of concentration in water (all values in mPa·s)

Water content in %    Dehydol LS 6
0    190
10    100
20    >105
30    60000
40    6500
50    14500
60    >105
70    1500
80    300
90    100

The numbers reported have to be regarded as maximum values; the values measured immediately after mixing will be lower than the numbers reported.
 

Storage    
a) Dehydol LS 6 should be stored indoors in a dry place. Storage rooms must not be overheated (see flash point).
b)    Dehydol LS 6 is hygroscopic due to its good solubility in water, with the result that it may absorb moisture very quickly. Drums must be resealed each time they are opened.
c)    The storage temperature should not be allowed to fall substantially below 20 °C. The congealing point of Dehydol LS 6 also need to be taken into account.
d)    Dehydol LS 6 is a cloudy liquid and tends to form sediment, it becomes a clear liquid at 40 °C.
e)    Liquid that has solidified or that shows signs of sedimentation should be heated to 50 – 70 °C and homogenized before it is processed. Please mix sufficiently prior to use.
f)    Drums that have solidified or that have begun to precipitate should be recon- stituted by gentle heating, preferably in a heating cabinet. The temperature must not be allowed to exceed 70 °C. Please mix sufficiently prior to use. 
This also applies if drums are heated by external electrical elements. Internal electrical elements should not be used because of the localized anomalies in temperature that they cause.
g)    Dehydol LS 6 must be blanketed with nitrogen if it is stored in heated tanks (at 50 – 60 °C) to prevent it from coming into contact with air. 
Constant, gentle stirring helps to prevent it being discolored as a result of prolonged contact with electrical elements or external heating coils.

Materials    
The following materials can be used for tanks and drums:
a)    AISI 321 stainless steel (X6CrNiTi1810)
b)    AISI 316 Ti stainless steel (X6CrNiMoTi17122)

Shelf life    
Provided it is stored properly and drums are kept tightly sealed, Dehydol LS 6 has a shelf life of at least two years in its original packaging.

Safety    
We know of no ill effects that could have resulted from using Dehydol LS 6 for the purpose for which it is intended and from processing it in accordance with current practices.

According to the experience that we have gained over many years and other information at our disposal, Dehydol LS 6 does not exert harmful effects on health, provided it is used properly, due attention is given to the precautions necessary for handling chemicals, and the information and advice given in our Safety Data Sheets are observed.

Please refer to the latest Safety Data Sheet for detailed information on product safety.

Dehydol LS 6/MB

Product Groups
Nonionic Surfactants
Sub Product Groups
Alcohol Ethoxylates
Function: Nonionic Surfactant
Form of Delivery: Liquid
Chemical Description: C12C14 Fatty alcohol + 6 EO

Application
Laundry
Food and Beverage Processing
Food Service and Kitchen Hygiene
Commercial Laundry

Certificates
Care Chemicals: ISO 9001 (global)
 

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