lactic acid

Lactic acid
Names
	Preferred IUPAC name 2-Hydroxypropanoic acid
	Other names Lactic acid; Milk acid;
Identifiers
CAS Number	50-21-5 ; 79-33-4 (szárd) ; 10326-41-7 (szárd) ;
3D model (JSmol)	Interactive image;
Beilstein Reference	1720251
ChEBI	CHEBI:422 ;
ChEMBL	ChEMBL330546 ;
ChemSpider	96860 ;
EC Number	200-018-0;
Gmelin Reference	362717
IUPHAR/BPS	2932;
KEGG	D00111; C00186; C00256;
PubChem CID	612;
RTECS number	OD2800000;
UNII	3B8D35Y7S4 ; F9S9FFU82N (szárd) ; 3Q6M5SET7W (szárd) ;
UN number	3265
	InChI InChI=1S/C3H6O3/c1-2(4)3(5)6/h2,4H,1H3,(H,5,6)/t2-/m0/s1 Key: JVTAAEKCZFNVCJ-REOHCLBHSA-N ;
	SMILES CC(O)C(=O)O;
Properties
Chemical formula	C3H6O3
Molar mass	90.078 g·mol−1
Melting point	18 °C (64 °F; 291 K)
Boiling point	122 °C (252 °F; 395 K) at 15 mmHg
Solubility in water	Miscible
Acidity (pKa)	3.86, 15.1
Thermochemistry
Std enthalpy of; combustion	1361.9 kJ/mol, 325.5 kcal/mol, 15.1 kJ/g, 3.61 kcal/g
Related compounds
Other anions	Lactate
Related carboxylic acids	Acetic acid; Glycolic acid; Propionic acid; 3-Hydroxypropanoic acid; Malonic acid; Butyric acid; Hydroxybutyric acid;
Related compounds	1-Propanol; 2-Propanol; Propionaldehyde; Acrolein; Sodium lactate; Ethyl lactate;
Pharmacology
ATC code	G01AD01 (WHO) QP53AG02 (WHO)
Hazards
	GHS labelling:
Pictograms
Hazard statements	H315, H318
Precautionary statements	P280, P305+P351+P338
	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