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Trichloroacetic acid

Trichloroacetic acid (TCA; TCAA; also known as trichloroethanoic acid) is an analogue of acetic acid in which the three hydrogen atoms of the methyl group have all been replaced by chlorine atoms. Salts and esters of trichloroacetic acid are called trichloroacetates.

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Further Information

Names

IUPAC nameTrichloroacetic acid

Identifiers

CAS Number: 76-03-9

JSmol: Interactive image

ChEMBL: ChEMBL14053

ChemSpider: 10772050

ECHA InfoCard: 100.000.844

KEGG: C11150

PubChem: 6421

RTECS number: AJ7875000

Properties

Chemical formula: C2HCl3O2

Molar mass: 163.38 g·mol

Appearance: Colorless to white, crystalline solid

Odor: sharp, pungent

Density: 1.63 g/cm

Melting point: 57 to 58 °C (135 to 136 °F; 330 to 331 K)

Boiling point: 196 to 197 °C (385 to 387 °F; 469 to 470 K)

Solubility in water: Soluble in 0.1 parts

Vapor pressure: 1 mmHg (51.1°C)

K: 0.66

Magnetic susceptibility: -73.0·10 cm/mol−63

Structure

Dipole moment: D

Hazards

EU classification: C

R-phrases: R35 R50/53

S-phrases: (S1/2) S26 S36/37/39 S45 S60 S61

NFPA 704:

median dose: 5000 mg/kg orally in rats

NIOSH

PEL: none

REL: TWA 1 ppm (7 mg/m)3

IDLH: N.D.

Related compounds

chloroacetic acids: Chloroacetic acid

Related compounds: Acetic acid

Except where otherwise noted, data are given for materials in their(at 25 °C [77 °F], 100 kPa).Except where otherwise noted, data are given for materials in their(at 25 °C [77 °F], 100 kPa).

Infobox references