Glycolic acid

Glycolic acid (or hydroxyacetic acid; chemical formula HOCH2CO2H) is a colorless, odorless and hygroscopic crystalline solid, highly soluble in water. It is used in various skin-care products. Glycolic acid is widespread in nature. A glycolate (sometimes spelled "glycollate") is a salt or ester of glycolic acid.

Glycolic acid
Names
Preferred IUPAC name
Hydroxyacetic acid
Other names
Hydroacetic acid
2-Hydroxyethanoic acid
Identifiers
3D model (JSmol)
ChEBI
ChEMBL
ChemSpider
DrugBank
ECHA InfoCard 100.001.073
EC Number
  • 201-180-5
KEGG
RTECS number
  • MC5250000
UNII
  • InChI=1S/C2H4O3/c3-1-2(4)5/h3H,1H2,(H,4,5) Y
    Key: AEMRFAOFKBGASW-UHFFFAOYSA-N Y
  • InChI=1/C2H4O3/c3-1-2(4)5/h3H,1H2,(H,4,5)
    Key: AEMRFAOFKBGASW-UHFFFAOYAR
  • OC(=O)CO
Properties
C2H4O3
Molar mass 76.05 g/mol
Appearance White powder or colorless crystals
Density 1.49 g/cm3
Melting point 75 °C (167 °F; 348 K)
Boiling point Decomposes
70% solution
Solubility in other solvents Alcohols, acetone,
acetic acid and
ethyl acetate
log P −1.05
Acidity (pKa) 3.83
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
 Corrosive
GHS labelling:
Danger
H302, H314, H332
P260, P261, P264, P270, P271, P280, P301+P312, P301+P330+P331, P303+P361+P353, P304+P312, P304+P340, P305+P351+P338, P310, P312, P321, P330, P363, P405, P501
NFPA 704 (fire diamond)
3
1
Flash point 129 °C (264 °F; 402 K)
Related compounds
Lactic acid
Related compounds
 Glycolaldehyde
Acetic acid
Glycerol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N verify (what is YN ?)
Infobox references
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