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Description

Trichlorobenzene · CAS 51703-47-0 · C6H3Cl3. UNII NUR9777IK4. Boiling Point: 424 to 426 °F at 760 mmHg (NTP, 1992); Boiling Point: 218.5 °C; Boiling Point: 218.5 °C @760 [mm Hg].

Identification

CAS Registry Number	51703-47-0
PubChem CID	6895
Molecular formula	C6H3Cl3
IUPAC name	1,2,3-trichlorobenzene
UNII (FDA)	NUR9777IK4

Computed Descriptors

Molecular Weight	181.4
XLogP3	4.1
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	0
Rotatable Bond Count	0
Exact Mass	179.930033
Monoisotopic Mass	179.930033
Topological Polar Surface Area	0
Heavy Atom Count	9
Formal Charge	0

Physical & Chemical Properties

Boiling Point	424 to 426 °F at 760 mmHg (NTP, 1992)
Boiling Point	218.5 °C
Boiling Point	218.5 °C @760 [mm Hg]
Melting Point	126.7 °F (NTP, 1992)
Melting Point	51.3 °C
Melting Point	53.5 °C
Flash Point	234.9 °F (NTP, 1992)
Flash Point	113 °C
Flash Point	112.7 °C (closed cup)
Flash Point	112.7 °C c.c.

Physical description & handling notes

• 1,2,3-trichlorobenzene appears as a white solid with a sharp chlorobenzene odor. Insoluble in water and denser than water. Hence sinks in water. Melting point 63-64 °C (145-147 °F).
• White solid; [Hawley] White crystalline solid; [MSDSonline]
• WHITE CRYSTALS WITH CHARACTERISTIC ODOUR.
• Platelets from alcohol
• White crystals
• Insoluble (NTP, 1992)

Regulatory Status

GHS notification summary	0.7% (1 / 153)

GHS Hazard Classification

GHS notification summary	0.7% (1 / 153)
Reported hazard statements	H302 (30.7%), H317 (88.2%), H400 (90.2%), H410 (89.5%), H315 (88.1%), H319 (88.1%), H335, H373

Documented Uses

• Used as an intermediate, dye carrier, transformer fluid, solvent, coolant, and heat transfer medium; Used in lubricants and insecticides; [HSDB]
• Chem intermediate eg, for 2,3-dichlorophenol; constituent of trichlorobenzene mixt used for termite control /SRP: Former use/ and as transformer fluid; dye carrier & solvent
• Solvent for high melting products; Coolant in electrical installations and glass tempering; Polyester dyeing; Lubricants; Heat transfer medium, insecticides.
• Trichlorobenzene ... has been used as a soil treatment to repel or poison termites around the foundation of buildings. The technical product is a mixture of the 1,2,3- and 1,2,4- isomers. /Former use/
• Trichlorobenzene is used as a solvent in chemical manufacturing, as well as in dyes, dielectric fluid, synthetic transformer oils, lubricants, heat-transfer medium, and insecticides. (T39)
• Chlorination of o-dichlorobenzene in the presence of ferric chloride, followed by distillation.

Synonyms

1,2,3-TRICHLOROBENZENE; 87-61-6; vic-Trichlorobenzene; 1,2,6-Trichlorobenzene; Benzene, 1,2,3-trichloro-; DTXSID8026193; NUR9777IK4; AI3-15516; 1,2,3-Trichlorbenzol; NSC-43432; DTXCID706193; CHEBI:35289; RefChem:906640; 201-757-1; TRICHLOROBENZENE; 12002-48-1

Frequently Asked Questions

What are the CAS number and molecular formula of Trichlorobenzene?

CAS 51703-47-0; molecular formula C6H3Cl3; molecular weight — g/mol.

What other names is Trichlorobenzene known by?

1,2,3-TRICHLOROBENZENE, 87-61-6, vic-Trichlorobenzene, 1,2,6-Trichlorobenzene, Benzene, 1,2,3-trichloro-, DTXSID8026193.

Is Trichlorobenzene classified as hazardous?

0.7% of GHS notifications report no hazard classification (1 of 153).

What are the key physical properties of Trichlorobenzene?

Boiling Point: 424 to 426 °F at 760 mmHg (NTP, 1992); Boiling Point: 218.5 °C; Boiling Point: 218.5 °C @760 [mm Hg]; Melting Point: 126.7 °F (NTP, 1992).

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.