SODIUM LAURYL SULFATE

PRODUCT IDENTIFICATION

CAS NO. 151-21-3

SODIUM LAURYL SULFATE 

EINECS NO. 205-788-1
FORMULA CH3(CH2)11OSO3Na
MOL WT. 290 - 310

H.S. CODE

 
SMILES

 

CLASSIFICATION

 

TOXICITY

Oral rat LD50: 1288 mg/kg
SYNONYMS Dodecyl sodium sulfate; SLS;
Sulfuric Acid Monododecyl Ester Sodium Salt; Sodium Dodecanesulfate; Dodecyl Alcohol,Hydrogen Sulfate,Sodium Salt; Akyposal SDS;

PHYSICAL AND CHEMICAL PROPERTIES (92%)

PHYSICAL STATE

White powder

MELTING POINT 204 - 207 C
BOILING POINT  
SPECIFIC GRAVITY

1.05

SOLUBILITY IN WATER 150 (g/l)
pH

9 - 10 (1% Aq.Sol)

VAPOR DENSITY  
AUTOIGNITION

 

NFPA RATINGS

Health: 2 Flammability: 1 Reactivity: 0

REFRACTIVE INDEX

 

FLASH POINT > 95 C
STABILITY Stable under ordinary conditions

GENERAL DESCRIPTION & APPLICATIONS

Sulfonic acid is a compound with general formula RSO2OH, where R is an aliphatic or aromatic hydrocarbon. It is a derivative of sulfuric acid (HOSO2OH) where an OH has been replaced by a carbon group or a compound where a hydrogen atom has been replaced by treatment with sulfuric acid; for example, benzene is converted to benzenesulfonic acid (water-soluble). Sulfonic acid has a sulfur atom bonded to a carbon atom of a hydrocarbon and bonded also to three oxygen atoms, one of which has been attached to a hydrogen atom. Sulfonic acid is acidic due to the hydrogen atom, stronger than a carboxylic acid. Sulfonic acid is one of the most important organo sulfur compounds in organic synthesis. Sulfonic acids are used as catalysts in esterification, alkylation and condensation reactions. Sulfonates are salts or esters of sulfonic acid. Sulfonic salts are soluble in water. Sulfonic acid and its salts present in organic dyes provide useful function of water solubility and or improve the washfastness of dyes due to their capabiltity of binding more tightly to the fabric. They are widely used in the detergent industry. Alkylbenzene sulfonic acid is the largest-volume synthetic surfactant because of its relatively low cost, good performance, the fact that it can be dried to a stable powder and the biodegradable environmental friendliness. Sodium lauryl sulfate (SLS), prepared by sulfation of lauryl alcohol and neutralisation with sodium carbonate, is another common surfactant which has an amphiphilic properties due to C12 chain ( lipophilic) attached to a sulfate group (hydrophilic). This bifunctionality in one molecule provides the basic properties useful in cleaners and detergents. SLS is used as a wetting agent in textiles, foaming and cleaning agent in detergent, cosmetic emulsifier, and sometimes in toothpastes. Sulfonate cleaners do not form an insoluble precipitates in hard water. Ammonium lauryl sulfate (ALS) is a structurally related compound, replacing ammonium group for sodium. They have same applications. But they cause skin and eye irritation, and are therefore not useful in in products that are on the skin for a long time. The ethoxylated SLS and ALS are less irritant on the skin; sodium laureth sulfate (sodium lauryl ether sulfate, SLES) and ammonium laureth sulfate (ammonium lauryl ether sulfate, ALES) which are prepared by addition of ethylene oxide. SLES and ALES are used as a foaming and viscosity builder in shampoos and personal care products (such as bubble bath, shaving cream , ointment, and tooth pastes sometimes) particularly of low pH products. One more common feature of them appears to be the compatibility with other surfactants.
SALES SPECIFICATION

28% GRADE

APPEARANCE

Clear to yellow liquid
AVERAGE MOLECULAR 290 - 310 
ACTIVE MATTER 28.0% min
SODIUM SULPHATE

2.0% max

UNSULFONATED MATTER

2.5% max

pH

6 - 8

FREE OIL

1.0% max

CHLORIDE

0.1% max

IRON

10ppm max

COLOR (KLETT)

70 max (5% Sol.)

92% GRADE

APPEARANCE

White powder

ACTIVE MATTER 92.0% min
SODIUM SULPHATE

3.5% max

UNSULFONATED MATTER

9 - 10 (1% Aq.Sol)

pH

2.0% max

SODIUM CHLORIDE

2.0% max

COLOR, APHA

200 max (10% Sol.)

TRANSPORTATION
PACKING 200kgs in plastic Drum
HAZARD CLASS Not regulated
UN NO.  
OTHER INFORMATION
Hazard Symbols: XI, Risk Phrases: 36/38, Safety Phrases: 26/37/39
PRICE INFORMATION