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Substance Name: PEG-13 Cetyl ether carboxylic acid, sodium salt
RN: 33939-65-0

Classification Code

  • TSCA Flag XU (Exempt from Reporting under Chemical Data Reporting Rule)

Molecular Formula

  • (C2-H4-O)mult-C18-H36-O3.Na

Molecular Weight

  • 366.514
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Names and Synonyms

Name of Substance

  • PEG-13 Cetyl ether carboxylic acid, sodium salt
  • Polyethylene glycol (13) cetyl ether carboxylic acid, sodium salt
  • Polyoxyethylene (13) cetyl ether carboxylic acid, sodium salt
  • Sodium ceteth-13 carboxylate


  • alpha-(Carboxymethyl)-omega-(hexadecyloxy)poly(oxy-1,2-ethanediyl), sodium salt
  • Cetyloxypoly(ethyleneoxy)acetic acid, sodium salt

Systematic Names

  • Poly(oxy-1,2-ethanediyl), alpha-(carboxymethyl)-omega-(hexadecyloxy)-, sodium salt
  • Poly(oxy-1,2-ethanediyl), alpha-(carboxymethyl)-omega-(hexadecyloxy)-, sodium salt (1:1)

Registry Numbers

CAS Registry Number

  • 33939-65-0

Other Registry Number

  • 68214-95-9

System Generated Number

  • 0033939650

Molecular Formulas

Molecular Formula

  • (C2-H4-O)mult-C18-H36-O3.Na

Molecular Formula Fragments

  • C18-H36-O3
  • C2-H4-O
  • Na

Structure Descriptors