Glycolic acid

Glycolic acid
Names
	Preferred IUPAC name Hydroxyacetic acid
	Other names Hydroacetic acid; 2-Hydroxyethanoic acid
Identifiers
CAS Number	79-14-1 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:17497 ;
ChEMBL	ChEMBL252557 ;
ChemSpider	737 ;
DrugBank	DB03085 ;
ECHA InfoCard	100.001.073
EC Number	201-180-5;
KEGG	C00160 ;
PubChem CID	757;
RTECS number	MC5250000;
UNII	0WT12SX38S ;
CompTox Dashboard (EPA)	DTXSID0025363 ;
	InChI InChI=1S/C2H4O3/c3-1-2(4)5/h3H,1H2,(H,4,5) Key: AEMRFAOFKBGASW-UHFFFAOYSA-N ; InChI=1/C2H4O3/c3-1-2(4)5/h3H,1H2,(H,4,5) Key: AEMRFAOFKBGASW-UHFFFAOYAR;
	SMILES OC(=O)CO;
Properties
Chemical formula	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	100 °C (212 °F; 373 K) Decomposes above 100 °C
Solubility in water	70% solution
Solubility in other solvents	Alcohols, acetone,; acetic acid and; ethyl acetate
log P	−1.05
Vapor pressure	1.051 kPa (80 °C)
Acidity (pKa)	3.83
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	Corrosive
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H302, H314, H332
Precautionary statements	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 1
Flash point	300 °C (572 °F; 573 K)
	Lethal dose or concentration (LD, LC):
LD50 (median dose)	1950 mg/kg (rat, oral); 2040 mg/kg (rat, oral)
LC50 (median concentration)	7.7 ppm (rat, 4h); 3.6 ppm (rat, 4h)
Related compounds
Related α-hydroxy acids	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). verify (what is ?) Infobox references

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.