1,3,5-Trimethylbenzene - 108-67-8

Key Functions: Industrial / Manufacturing, Plasticizers & Polymer, Solvents & Cleaning, Tech, Energy & Fuel

1,2,4-Trimethylbenzene is used as a solvent in the production of dyes, perfumes, and resins, is a comonomer for pseudocumene-formaldehyde resins, and is used as a paint thinner (HSDB 2008a). It is produced via fractional distillation of the C9 fraction of refinery reformate streams, via the liquid-phase disproportionation of xylene in the presence of aluminum chloride, or via the methylation of xylene with methanol or dimethyl ether on fluorine-containing crystalline borosilicate, aluminosilicate, or boroaluminosilicate at 300°C and atmospheric pressure (HSDB 2008a). 1,3,5-Trimethylbenzene is used as a solvent, paint thinner, motor fuel component, and intermediate for the production of dyes and antioxidants (HSDB 2008b). It is produced via the dehydration of acetone with sulfuric acid or via the liquid-phase disproportionation of xylene in the presence of aluminum chloride (HSDB 2008b). 1,2,3-Trimethylbenzene is used as a solvent in dye and perfume production (HSDB 2008c). It is produced via the distillation and purified by the differential hydrolysis of its sulfonic acids (HSDB 2008c). ToxServices assessed trimethylbenzenes against GreenScreen® Version 1.2 (CPA 2013) following

Chemical Synonyms Pseudocumene; 1,2,5-Trimethylbenzene; 1,3,4-Trimethylbenzene; as-Trimethylbenzene; Asymmetrical trimethylbenzene; Benzene, 1,2,4-trimethyl-; Benzene, 1,2,5-trimethyl-; EINECS 202-436-9;Pseudocumol; psi-Cumene; Psi-cumene; Uns-trimethylbenzene; 1,2,4-Trimethyl benzene (ChemIDplus 2014a) 1,3,5-Trimethylbenzene (CAS #108-67-8) Mesitylene; 3,5-Dimethyltoluene; Benzene, 1,3,5-trimethyl-; EINECS 203-604-4; symTrimethylbenzene; Trimethylbenzol; 1,3,5-Trimethylbenzene [UN2325] [Flammable liquid]; Trimethylbenzene, 1,3,5-; UN2325 (ChemIDplus 2014b) 1,2,3-Trimethylbenzene (CAS #526-73-8) Hemimellitene; EINECS 208-394-8; Hemellitol; Hemimellitol; Benzene, 1,2,3-trimethyl- (ChemIDplus 2014c) Trimethylbenzenes (CAS #25551-13-7) EINECS 247-099-9; Methylxylene; Trimethyl benzene; Trimethylbenzene; Benzene, trimethyl-; Benzene, trimethyl- (mixed isomers); Trimethyl benzene (mixed isomers (ChemIDplus 2014d)

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