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1,2,3-Trichlorobenzene

1,2,3-Trichlorobenzene structure

CAS No:
87-61-6
Formula:
C6H3Cl3
Chemical Name:
1,2,3-Trichlorobenzene
Synonyms:
Benzene,1,2,3-trichloro-;1,2,3-Trichlorobenzene;vic-Trichlorobenzene;1,2,6-Trichlorobenzene;NSC 43432
Categories:
Organic Chemistry > Hydrocarbons and Derivatives

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Description

White crystalline

1,2,3-Trichlorobenzene Basic Attributes

Molecular Weight：

181.45

Exact Mass：

181.45

BRN：

956882

EC Number：

201-757-1

HScode：

29036990

Characteristics

PSA：

XLogP3：

4.05

Appearance：

white flakes

Density：

1.4533 g/cm³ @ Temp: 25 °C

Melting Point：

53.5 °C

Boiling Point：

218.5 °C

Flash Point：

260 °F

Refractive Index：

1.567

Water Solubility：

H2O: INsoluble

Storage Conditions：

0-6°C

Vapor Pressure：

0.07 mm Hg ( 25 °C)

Vapor Density：

6.25 (vs air)

Toxicity：

Oral-rat LD50: 1830 mg/kg; Abdominal cavity-mouse LD50: 1390 mg/kg

Flammability characteristics：

Open flame is flammable; burning releases toxic chloride fumes; hydrolysis generates hydrochloric acid

Explosive limit：

2.5-6.6%(V)

Safety Information

Packing level：

III

Hazard category：

Transport codes：

UN 3077 9/PG 3

wgk germany：

hazard class code：

22-36/37/38-38-39/23/24/25-23/24/25-52/53-51/53

safety instructions：

36/37-26-45-61-36

RTECS Number：

DC2095000

Marks：

Xn,T,N

Storage features：

Treasury is ventilated, low temperature and dry; stored separately from food additives

Stability/Shelf Life：

Stable under normal temperatures and pressures.

Precautionary statement(s)：

P210-P260-P280-P301 + P310 + P330-P308 + P311-P403 + P233

Hazard Statements：

H225-H301 + H311 + H331-H370

Toxicity

Toxicity class：

moderately toxic

1,2,3-Trichlorobenzene Use and Manufacturing

Methods of Manufacturing

1. The non-toxic BHC dried by pyrolysis is heated in a pyrolysis kettle to obtain trichlorobenzene, and a large amount of hydrogen chloride is by-produced. 2. Alkaline hydrolysis method BHC and lime milk are heated together to obtain trichlorobenzene, and a large amount of calcium chloride solution is by-produced. The trichlorobenzene obtained by the above two methods are all 1, 2, 4-trichlorobenzene; 1, 3, 5-trichlorobenzene; a mixture of three isomers of 1, 2, 3-trichlorobenzene, with 1, 2 , 4-Trichlorobenzene is the main component. In the trichlorobenzene produced by the lime milk method, 1, 2, 4-trichlorobenzene content is more than 75%, and 1, 2, 3-trichlorobenzene accounts for about 20%.

Uses

Mainly used to prepare pyromellitic dianhydride, also used to produce polyimide resins, dyes, plasticizers, surfactants, etc.

Computed Properties

Molecular Weight:181.4
XLogP3:4.1
Exact Mass:179.930033
Monoisotopic Mass:179.930033
Heavy Atom Count:9
Complexity:84.3
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes

Material

2,6-Dichlorophenol

1,2-Dichlorobenzene

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