Home Categories Surfactant Sodium dodecyl sulfate
A7294212

Sodium dodecyl sulfate , Dedicated by electrophoresis, ≥98.5%(GC) , 151-21-3

Synonym(s):
SDS;Sodium lauryl sulfate;Dodecyl sodium sulfate;Dodecyl sulfate sodium salt;Lauryl sulfate sodium salt

CAS NO.:151-21-3

Empirical Formula: C12H25NaO4S

Molecular Weight: 288.38

MDL number: MFCD00036175

EINECS: 205-788-1

Pack Size Price Stock Quantity
25G RMB44.80 In Stock
100G RMB123.20 In Stock
500G RMB1192.00 In Stock
2.5KG RMB1613.60 In Stock
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Update time: 2022-07-08

PRODUCT Properties

Melting point: 204-207 °C (lit.)
Density  1.03 g/mL at 20 °C
FEMA  4437 | SODIUM LAURYL SULFATE
Flash point: >100°C
storage temp.  2-8°C
solubility  H2O: 0.1 M, clear to nearly clear, colorless to slightly yellow
form  Powder or Crystals
color  White to pale yellow
PH 6-9 (10g/l, H2O, 20℃)
Odor Slight fatty odour
PH Range 7.2
Water Solubility  ca. 150 g/L (20 ºC)
λmax λ: 260 nm Amax: 0.3
λ: 280 nm Amax: 0.2
Merck  14,8636
BRN  3599286
InChIKey DBMJMQXJHONAFJ-UHFFFAOYSA-M
LogP 1.600

Description and Uses

Sodium dodecyl sulfate is an anionic surfactant, and is a typical representative of sulphate-based surfactant. It is abbreviated as SDS, and also known as AS, K12, coco alcohol sulfate, sodium lauryl sulfate and foaming agent. The commercial products are usually white to light yellow crystalline powder. It is non-toxic, slightly soluble in alcohol, insoluble in chloroform and ether, soluble in water, and has good anionic and nonionic complex compatibility. It has good emulsibility, foamability, and foaming, infiltrating, decontaminating and dispersing properties. It is abundant in foams and quickly biodegradable, and has solubility next only to fatty alcohol polyoxyethylene ether sodium sulphate (abbreviated as AES). It is not sensitive to alkali and hard water, but its stability is inferior to general sulfonate under acidic conditions and is close to AES. It is not favorable to exceed 95 °C upon long-term heating, and its irritation is at the middle level among surfactants, with an irritation index of 3.3 for a 10% solution, which is higher than AES and lower than sodium dodecyl benzene sulfonate (abbreviated as LAS). Toxicity LD50 is 1300mg/kg. There is no evidence that this product is carcinogenic, but high doses may indeed irritate the skin. However, in general sanitary products the concentration is limited when used as a forming agent, and is in line with national standards. So there is no need to concern.
Sodium dodecyl sulfate is a major component of detergent. It is usually used in the DNA extraction process to separate DNA after protein denaturation. It is often misread as sodium dodecyl sulfonate. It is widely used as a foaming agent in toothpaste, soap, shower gel, shampoo, detergent and cosmetics. 95% of personal care products and household cleaning products contain sodium lauryl sulfate.
The above information is edited by the chemicalbook of Jin Yinxue.

Wetting agent, detergent, especially in the textile industry. Electrophoretic separation of proteins and lipids. Ingredient of toothpastes.

Safety

Symbol(GHS) 
GHS05,GHS07
Signal word  Danger
Hazard statements  H302-H315-H318-H412
Precautionary statements  P264-P273-P280-P301+P312-P302+P352-P305+P351+P338
Hazard Codes  F,Xn,Xi
Risk Statements  36/37/38-36/38-22-11-21/22-42-41-20/21/22-37/38
Safety Statements  26-36/37-36/37/39-36-22-39
RIDADR  UN 2926 4.1/PG 2
WGK Germany  2
RTECS  WT1050000
3
TSCA  Yes
HazardClass  4.1
PackingGroup  III
HS Code  29209010
Toxicity LD50 orally in rats: 1288 mg/kg (Walker)

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