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296104

Sigma-Aldrich

1,2,4-Trichlorobenzene

anhydrous, ≥99%

Synonym(s):

1,2,4-TCB

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About This Item

Empirical Formula (Hill Notation):
C6H3Cl3
CAS Number:
120-82-1
Molecular Weight:
181.45
Beilstein:
956819
EC Number:
204-428-0
MDL number:
MFCD00000547
UNSPSC Code:
12352101
PubChem Substance ID:
57648386
NACRES:
NA.21

grade

anhydrous

Quality Level

100

vapor density

>6 (vs air)

vapor pressure

1 mmHg ( 40 °C)

Assay

≥99%

form

solid or liquid

autoignition temp.

1060 °F

expl. lim.

6.6 %, 150 °F

impurities

<0.002% water
<0.005% water (100 mL pkg)

refractive index

n20/D 1.571 (lit.)

bp

214 °C (lit.)

mp

16 °C (lit.)

solubility

water: insoluble

density

1.454 g/mL at 25 °C (lit.)

SMILES string

Clc1ccc(Cl)c(Cl)c1

InChI

1S/C6H3Cl3/c7-4-1-2-5(8)6(9)3-4/h1-3H

InChI key

PBKONEOXTCPAFI-UHFFFAOYSA-N

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General description

1,2,4-Trichlorobenzene is a highly chlorinated aromatic solvent. It is mainly used as intermediate in dyes, pesticides and also as a lubricant.

Application

1,2,4-Trichlorobenzene may be used as a solvent to prepare:
  • dimethylketene β-lactone dimer from tetramethyl-1,3-cyclobutanedione
  • salicyl-o-toluide by the reaction of phenyl salicylate and o-toluidine

Pictograms

Exclamation markEnvironment
GHS07,GHS09

Signal Word

Warning

Hazard Statements

H302 - H315 - H410

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Skin Irrit. 2

Storage Class Code

6.1C - Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

WGK

WGK 3

Flash Point(F)

235.4 °F - closed cup

Flash Point(C)

113.0 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

EU REACH Annex XVII (Restriction List)

CAS No.

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Dimethylketene ?-lactone dimer
Robert H, et al.
Organic Syntheses, 48, 72-72 (1968)
Biomineralisation of 1,2,4-trichlorobenzene in soils by an adapted microbial population.
Schroll R, et al.
Environmental Pollution (Barking, Essex : 1987), 127(3), 395-401 (2004)
Salicyl-o-toluide
Allen CFH and VanAllan J
Organic Syntheses, 26, 92-92 (1946)
Sorption and cosorption of 1, 2, 4-trichlorobenzene and tannic acid by organo-clays.
Dentel SK, et al.
Water Research, 32(12), 3689-3697 (1998)
The effect of trichlorobenzene solvent geometry on the morphologies of C60 nano/microcrystals produced from solution.
Liu DD, et al.
Materials Research Bulletin, 73, 65-69 (2016)
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