75487-12-6

Basic information

• Product Name: 1,2-dichloro-3,5-dimethylbenzene
• Synonyms: 1,2-Dichloro-3,5-dimethylbenzene; benzene, 1,2-dichloro-3,5-dimethyl-
• CAS NO: 75487-12-6
• Molecular Formula: C₈H₈Cl₂
• Molecular Weight: 175.0551
• Mol File: 75487-12-6.mol

Chemical Properties

• Boiling Point: 229.8°C at 760 mmHg
• Flash Point: 92.2°C
• Density: 1.199g/cm³
• Vapor Pressure: 0.103mmHg at 25°C
• Refractive Index: 1.538
• CAS DataBase Reference: 1,2-dichloro-3,5-dimethylbenzene(CAS DataBase Reference)
• NIST Chemistry Reference: 1,2-dichloro-3,5-dimethylbenzene(75487-12-6)
• EPA Substance Registry System: 1,2-dichloro-3,5-dimethylbenzene(75487-12-6)

Safety Data

• Hazardous Substances Data: 75487-12-6(Hazardous Substances Data)

Upstream product

• 79-01-6 Trichloroethylene 
• 675-09-2 4,6-Dimethyl-2-pyron 

Relevant articles and documents

Photoadducts of 4,6-Dimethyl- and 4-Methoxy-6-methyl-2-pyrones with Chloroethylenes and Their Dehydrochlorination

Sensitized photoreactions of 2-pyrones with chloroethylenes gave two kinds of cycloadducts, 2-oxabicyclooct-4-en-3-ones (4,8) and across the C3-C4 double bond in 2-pyrone, benzene derivatives, and/or cyclobutanecarboxylic acids: Their relative yields greatly depended upon the nature of the reactants.The dehydrochlorination of the cycloadducts 4 and 8 across the C5-C6 double bonds in the pyrones with triethylamine in ethanol gave 5-ethenyl-2-pyrones, whose structures were previously incorrectly assigned as oxocinones, via a symmetry-allowed ring opening of 2-oxabicycloocta-4,6-dien-3-ones.Some 5-ethenyl-2-pyrones possessing a chlorinated ethenyl group finally affords 5-ethynyl-2-pyrones by an anti-elimination of hydrogen chloride.The X-ray crystallographic analyses of 5-ethenyl- and 5-ethynyl-2-pyrones are also described.