Manufacturer Supply High Quality CAS 151-21-3 Sodium Dodecyl Sulfate

• CAS No.: 151-21-3
• Formula: C12h25nao4s
• EINECS: 205-788-1
• Type: Synthesis Material Intermediates
• Appearance: White Powder
• Quality: Industrial
• Model NO.: TY-02ALI
• Colour: White
• Package: Foil Bag
• Place: China
• Assay: 99%
• Shelf: 2 Years
• Transport Package: 25kg/Drum 5g, 100g, 500g, 1kg, 10kg, 100kg, 200kg
• Specification: 25kg/drum
• Trademark: tongyon
• Origin: China
• Production Capacity: 5000kg/Month

Product Description

 

Product name	Sodium dodecyl sulfate
CAS	151-21-3
Appearance	white powder
Assay	99%
Storage	Cool and Protect from light

Sodium dodecyl sulfate
Product Name Sodium dodecyl sulfate

CAS 151-21-3

MF C12H25NaO4S

MW 288.38

EINECS 205-788-1

MOL File 151-21-3.mol

Chemical 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
Odor Slight fatty odour
PH 6-9 (10g/l, H2O, 20ºC)
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



Usage And Synthesis
Anionic surfactants

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 chloroforrm 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.

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