Ammonium lauryl sulfate

Ammonium lauryl sulfate (ALS) is the common name for ammonium dodecyl sulfate (CH3(CH2)10CH2OSO3NH4). The anion consists of a nonpolar hydrocarbon chain and a polar sulfate end group. The combination of nonpolar and polar groups confers surfactant properties to the anion: it facilitates dissolution of both polar and non-polar materials. This salt is classified as a sulfate ester. It is made from coconut or palm kernel oil for use primarily in shampoos and body-wash as a foaming agent. Lauryl sulfates are very high-foam surfactants that disrupt the surface tension of water in part by forming micelles at the surface-air interface.

Ammonium lauryl sulfate
Names
IUPAC name
Ammonium dodecyl sulfate
Other names
• monododecyl ester, ammonium salt
• Ammonium dodecyl sulfate
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.017.086
PubChem CID
UNII
  • InChI=1S/C12H26O4S.H3N/c1-2-3-4-5-6-7-8-9-10-11-12-16-17(13,14)15;/h2-12H2,1H3,(H,13,14,15);1H3 Y
    Key: BTBJBAZGXNKLQC-UHFFFAOYSA-N Y
  • InChI=1/C12H26O4S.H3N/c1-2-3-4-5-6-7-8-9-10-11-12-16-17(13,14)15;/h2-12H2,1H3,(H,13,14,15);1H3
    Key: BTBJBAZGXNKLQC-UHFFFAOYAS
SMILES
  • [O-]S(=O)(=O)OCCCCCCCCCCCC.[NH4+]
Properties
C12H29NO4S
Molar mass 283.43 g/mol
Appearance yellowish viscous liquid
Density 1.02 g/cm3
Boiling point 418 °C (784 °F; 691 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Y verify (what is YN ?)
Infobox references
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