Chloroacetic acid

Chloroacetic acid
Names
	Preferred IUPAC name Chloroacetic acid
	Systematic IUPAC name Chloroethanoic acid
	Other names 2-Chloroacetic acid; 2-Chloroethanoic acid
Identifiers
CAS Number	79-11-8 ;
3D model (JSmol)	Interactive image;
3DMet	B02139;
ChEBI	CHEBI:27869 ;
ChEMBL	ChEMBL14090 ;
ChemSpider	10772140 ;
ECHA InfoCard	100.001.072
EC Number	201-178-4;
KEGG	D07677 ; C06755;
PubChem CID	300;
RTECS number	AF8575000;
UNII	5GD84Y125G ;
CompTox Dashboard (EPA)	DTXSID4020901 ;
	InChI InChI=1S/C2H3ClO2/c3-1-2(4)5/h1H2,(H,4,5) Key: FOCAUTSVDIKZOP-UHFFFAOYSA-N ; InChI=1/C2H3ClO2/c3-1-2(4)5/h1H2,(H,4,5) Key: FOCAUTSVDIKZOP-UHFFFAOYAR;
	SMILES ClCC(O)=O;
Properties
Chemical formula	ClCH2CO2H
Molar mass	94.49 g·mol−1
Appearance	Colorless or white crystals
Density	1.58 g/cm3
Melting point	63 °C (145 °F; 336 K)
Boiling point	189.3 °C (372.7 °F; 462.4 K)
Solubility in water	85.8 g/(100 mL) (25 °C)
Solubility	Soluble in methanol, acetone, diethyl ether, benzene, chloroform, ethanol
log P	0.22
Vapor pressure	0.22 hPa
Acidity (pKa)	2.86
Magnetic susceptibility (χ)	−48.1×10−6 cm3/mol
Refractive index (nD)	1.4351 (55 °C)
Structure
Crystal structure	Monoclinic
Thermochemistry
Heat capacity (C)	144.02 J/(K·mol)
Std enthalpy of; formation (ΔfH⦵298)	−490.1 kJ/mol
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	alkylating agent
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H301, H311, H314, H331, H400
Precautionary statements	P260, P261, P264, P270, P271, P273, P280, P301+P310, P301+P330+P331, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P310, P311, P312, P321, P322, P330, P361, P363, P391, P403+P233, P405, P501
NFPA 704 (fire diamond)	3 1 0
Flash point	126 °C (259 °F; 399 K)
Autoignition; temperature	470 °C (878 °F; 743 K)
	Lethal dose or concentration (LD, LC):
LD50 (median dose)	76 mg/kg.
Safety data sheet (SDS)	External MSDS
Related compounds
Related compounds	Dichloroacetic acid; Trichloroacetic acid; Fluoroacetic acid; Bromoacetic acid; Iodoacetic acid; Acetic acid; 2-Chloropropionic acid; 3-Chloropropanoic acid; 2,2-Dichloropropionic acid; Sodium chloroacetate;
	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

Chloroacetic acid, industrially known as monochloroacetic acid (MCA), is the organochlorine compound with the formula Cl C H₂CO₂H. This carboxylic acid is a useful building block in organic synthesis. It is a colorless solid. Related compounds are dichloroacetic acid and trichloroacetic acid.

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