十二烷基硫酸钠

Description

Sodium Laurylsulfate · CAS 151-21-3 · NaSO4C12H25. UNII 368GB5141J. Melting Point: 399 to 405 °F (NTP, 1992); Melting Point: 205.5; Melting Point: 204 °C.

Identification

CAS Registry Number	151-21-3
PubChem CID	3423265
Molecular formula	NaSO4C12H25
IUPAC name	sodium dodecyl sulfate
UNII (FDA)	368GB5141J
FEMA number	4437

Computed Descriptors

Molecular Weight	288.38
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	4
Rotatable Bond Count	12
Exact Mass	288.13712473
Monoisotopic Mass	288.13712473
Topological Polar Surface Area	74.8
Heavy Atom Count	18
Formal Charge	0
Complexity	249

Physical & Chemical Properties

Melting Point	399 to 405 °F (NTP, 1992)
Melting Point	205.5
Melting Point	204 °C
Melting Point	205 °C
Solubility	100000
LogP	1.6
LogP	log Kow = 1.60
Surface Tension	39.5 dyn/cm at 25 °C

Physical description & handling notes

• Dodecyl sulfate, [sodium salt] appears as white to pale yellow paste or liquid with a mild odor. Sinks and mixes with water. (USCG, 1999)
• Liquid; Dry Powder; Liquid; Liquid; Other Solid; Large Crystals; CBI; Dry Powder; Other Solid
• White or cream-colored solid; [Merck Index] White to pale yellow paste or liquid; [CAMEO] White powder; [MSDSonline]
• WHITE SOLID IN VARIOUS FORMS WITH CHARACTERISTIC ODOUR.
• White or cream-colored crystals, flakes, or powder
• Small, white or light-yellow crystals

Regulatory Status

Regulatory & Food Contact	FDA Substance added to food: EMULSIFIER OR EMULSIFIER SALT, SURFACE-ACTIVE AGENT FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS Savory, Umami CIR / INCI: Cosmetic ingredients (Sodium Lauryl Sulfate) -> CIR (Cosmetic Ingredient Review) CIR / INCI: Surfactant; Foaming; Denaturant; Emulsifying
GHS notification summary	0.9% (24 / 2658)

GHS Hazard Classification

GHS notification summary	0.9% (24 / 2658)
Reported hazard statements	H228 (38.9%), H302 (93.7%), H315 (98.2%), H318 (52.3%), H319 (39.8%), H332 (14.8%), H335 (38.7%), H412 (40.2%)

Documented Uses

• CIR ingredient: Sodium Lauryl Sulfate
• Electroplating [Category: Plate]
• Painting (Pigments, Binders, and Biocides) [Category: Paint]
• Dressing Hair [Category: Other]
• Metal Extraction and Refining [Category: Industry]
• Used in electrophoretic separation of proteins and lipids; wetting agent, detergent, especially in the textile industry.

Synonyms

Sodium dodecyl sulfate; 151-21-3; SODIUM LAURYL SULFATE; Sodium dodecylsulfate; Sodium lauryl sulphate; Sodium dodecyl sulphate; Sodium n-dodecyl sulfate; Duponol C; Dodecyl sodium sulfate; Anticerumen; Duponal; Gardinol; Stepanol methyl; Neutrazyme; Stepanol wac; Stepanol waq

Frequently Asked Questions

What are the CAS number and molecular formula of Sodium Laurylsulfate?

CAS 151-21-3; molecular formula NaSO4C12H25; molecular weight — g/mol.

What other names is Sodium Laurylsulfate known by?

Sodium dodecyl sulfate, 151-21-3, SODIUM LAURYL SULFATE, Sodium dodecylsulfate, Sodium lauryl sulphate, Sodium dodecyl sulphate.

What is the regulatory status of Sodium Laurylsulfate?

Documented regulatory listings: FDA Substance added to food: EMULSIFIER OR EMULSIFIER SALT, SURFACE-ACTIVE AGENT; FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS; Savory, Umami.

Is Sodium Laurylsulfate classified as hazardous?

0.9% of GHS notifications report no hazard classification (24 of 2658).

What are the key physical properties of Sodium Laurylsulfate?

Melting Point: 399 to 405 °F (NTP, 1992); Melting Point: 205.5; Melting Point: 204 °C; Melting Point: 205 °C.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.