Glycolic acid

CAS Registry Number®

79-14-1

CAS Name

Glycolic acid

Molecular Formula

C2H4O3

Molecular Mass

76.05

Cite this Page

Glycolic acid.   CAS Common Chemistry.   CAS, a division of the American Chemical Society, n.d.   http://commonchemistry.cas.org/ChemicalDetail.aspx?ref=79-14-1 (retrieved 2025-07-18) (CAS RN: 79-14-1).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Compound Properties

  • Boiling Point (1)

    157 °C @ Press: 18 Torr

  • Melting Point (2)

    80 °C

  • Density (2)

    1.49 g/cm³ @ Temp: 25 °C

Source(s)

Other Names and Identifiers

InChI

InChI=1S/C2H4O3/c3-1-2(4)5/h3H,1H2,(H,4,5)

InChIKey

InChIKey=AEMRFAOFKBGASW-UHFFFAOYSA-N

SMILES

C(CO)(O)=O

Canonical SMILES

O=C(O)CO

Other Names for this Substance

  • Acetic acid, 2-hydroxy-
  • Glycolic acid
  • Acetic acid, hydroxy-
  • 2-Hydroxyacetic acid
  • Hydroxyacetic acid

View All

Deleted or Replaced CAS Registry Numbers

702627-33-6, 259744-22-4, 1033720-45-4, 1033720-48-7