Back حمض ثلاثي كلورو الخليك Arabic تری کولورواستیک اسید AZB Kyselina trichloroctová Czech Trikloreddikesyre Danish Trichloressigsäure German Trikloroacetata acido Esperanto Ácido tricloroacético Spanish Azido trikloroazetiko Basque تری کلرواستیک اسید Persian Trikloorietikkahappo Finnish

Trichloroacetic acid

Trichloroacetic acid
Names
Preferred IUPAC name
Trichloroacetic acid
Identifiers
3D model (JSmol)
970119
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.000.844 Edit this at Wikidata
2842
KEGG
RTECS number
  • AJ7875000
UNII
  • InChI=1S/C2HCl3O2/c3-2(4,5)1(6)7/h(H,6,7)
    Key: YNJBWRMUSHSURL-UHFFFAOYSA-N
  • ClC(Cl)(Cl)C(O)=O
Properties
C2HCl3O2
Molar mass 163.38 g·mol−1
Appearance Colorless to white, crystalline solid
Odor Sharp, pungent [1]
Density 1.63 g/cm3
Melting point 57 to 58 °C (135 to 136 °F; 330 to 331 K)[2]
Boiling point 196 to 197 °C (385 to 387 °F; 469 to 470 K)[2]
1000 g/100 mL[2]
Vapor pressure 1 mmHg (51.1 °C)[1]
Acidity (pKa) 0.66[3]
−73.0·10−6 cm3/mol
Structure
3.23 D
Hazards
GHS labelling:
GHS05: CorrosiveGHS09: Environmental hazard
Danger
H314, H410
P260, P264, P273, P280, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P310, P321, P363, P391, P405, P501
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 3: Short exposure could cause serious temporary or residual injury. E.g. chlorine gasFlammability 1: Must be pre-heated before ignition can occur. Flash point over 93 °C (200 °F). E.g. canola oilInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
3
1
0
Lethal dose or concentration (LD, LC):
5000 mg/kg orally in rats[2]
NIOSH (US health exposure limits):
PEL (Permissible)
 None[1]
REL (Recommended)
 TWA 1 ppm (7 mg/m3)[1]
IDLH (Immediate danger)
 N.D.[1]
Related compounds
Chloroacetic acid
Dichloroacetic acid
Related compounds
 Acetic acid
Trifluoroacetic acid
Tribromoacetic acid
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
checkY verify (what is checkY☒N ?)

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as trichloroethanoic acid) is an analogue of acetic acid in which the three hydrogen atoms of the methyl group have all been replaced by chlorine atoms.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.

  1. ^ a b c d e NIOSH Pocket Guide to Chemical Hazards #0626 National Institute for Occupational Safety and Health (NIOSH)
  2. ^ a b c d Budavari, Susan, ed. (1996), The Merck Index: An Encyclopedia of Chemicals, Drugs, and Biologicals (12th ed.), Merck, ISBN 0911910123
  3. ^ Databog fysik kemi, F&K Forlaget 11. udgave 2009
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