1,2,4,5-Tetramethylbenzene

1,2,4,5-Tetramethylbenzene Basic information

Product Name:	1,2,4,5-Tetramethylbenzene
Synonyms:	Zone Refined (nuMber of passes:23);1,2,4,5-TetraMethylbenzene, 99% 100GR;1,2,4,5-TetraMethylbenzene, 99% 500GR;1,2,4,5-Tetramethylbenzoate;2,5-Dimethyl-p-xylene;1,2,4,5-Tetramethylbenzene,98%;1,2,4,5-Tetramethylbenzene Zone Refined;1,2,4,5-TETRAMETHYLBENZENE FOR SYNTHESIS
CAS:	95-93-2
MF:	C10H14
MW:	134.22
EINECS:	202-465-7
Product Categories:	Arenes;Building Blocks;Chemical Synthesis;Organic Building Blocks;Highly Purified Reagents;Other Categories;Zone Refined Products
Mol File:	95-93-2.mol

1,2,4,5-Tetramethylbenzene Chemical Properties

Melting point	78 °C
Boiling point	196-197 °C
density	0.838 g/mL at 25 °C(lit.)
vapor density	4.6 (vs air)
vapor pressure	160 mm Hg ( 140 °C)
refractive index	1.5093
Fp	165 °F
storage temp.	Flammables area
solubility	0.00348g/l
form	neat
Specific Gravity	0.838
color	White to Almost white
Odor	rancid sweet
Water Solubility	insoluble
Merck	14,3468
BRN	1903393
Henry's Law Constant	2.49 at 25 °C (approximate - calculated from water solubility and vapor pressure)
LogP	4.000
CAS DataBase Reference	95-93-2(CAS DataBase Reference)
NIST Chemistry Reference	Benzene, 1,2,4,5-tetramethyl-(95-93-2)
EPA Substance Registry System	1,2,4,5-Tetramethylbenzene (95-93-2)

Safety Information

MSDS Information

1,2,4,5-Tetramethylbenzene Usage And Synthesis

Chemical Properties	white to brown semi-transparent crystals
Physical properties	Colorless crystals or scales with a camphor-like odor
Uses	Plasticizers; polymers; fibers; organic synthesis.
Uses	1,2,4,5-Tetramethylbenzene is used in method for reducing odor in room in remodeling work by removing causative substances.
Definition	ChEBI: Durene is a tetramethylbenzene carrying methyl groups at positions 1, 2, 4 and 5.
General Description	Colorless crystals with a camphor-like odor.
Air & Water Reactions	Insoluble in water.
Reactivity Profile	Vigorous reactions, sometimes amounting to explosions, can result from the contact between aromatic hydrocarbons, such as 1,2,4,5-Tetramethylbenzene, and strong oxidizing agents. They can react exothermically with bases and with diazo compounds. Substitution at the benzene nucleus occurs by halogenation (acid catalyst), nitration, sulfonation, and the Friedel-Crafts reaction.
Purification Methods	Chromatograph durene on alumina, and recrystallise it from aqueous EtOH or *benzene. Zone-refining removes duroaldehydes. Dry it under vacuum. [Yamauchi et al. J Phys Chem 89 4804 1985.] It has also been sublimed in vacuo [Johnston et al. J Am Chem Soc 109 1291 1987]. [Beilstein 5 H 431, 5 I 207, 5 II 329, 5 III 979, 5 IV 1076.]

1,2,4,5-Tetramethylbenzene Preparation Products And Raw materials

Raw materials	Sodium hydroxide-->Methanol-->Aluminium chloride hexahydrate-->Chloromethane-->m-Xylene-->1,2,4-Trimethylbenzene-->tetramethylbenzene-->Ethanone, 1-(2,3,4,6-tetramethylphenyl)--->2,3-DIMETHYL-2-CYCLOPENTEN-1-ONE-->2,3,4-trimethylcyclopent-2-en-1-one-->Pentamethylbenzene
Preparation Products	Mesitylene-->2,3,5,6-TETRAMETHYLBENZALDEHYDE-->Pyromellitic Dianhydride-->Pyromellitic acid-->1,2,3,4-Tetramethylbenzene-->2,3,5,6-TETRAMETHYLBENZENESULFONYL CHLORIDE-->TETRAMETHYLTEREPHTHALIC ACID-->2,3,5,6-TETRAMETHYL PHENOL-->2,4-DIMETHYLPENTANE

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