65432-04-4

Basic information

• Product Name: 1,3-Dichloro-5-isopropylbenzene
• Synonyms: 1,3-Dichloro-5-isopropylbenzene
• CAS NO: 65432-04-4
• Molecular Formula: C₉H₁₀Cl₂
• Molecular Weight: 189.0817
• Mol File: 65432-04-4.mol

Chemical Properties

• Boiling Point: 209.63°C at 760 mmHg
• Flash Point: 68.731°C
• Appearance: /
• Density: 1.157g/cm³
• Vapor Pressure: 0.29mmHg at 25°C
• Refractive Index: 1.527
• CAS DataBase Reference: 1,3-Dichloro-5-isopropylbenzene(CAS DataBase Reference)
• NIST Chemistry Reference: 1,3-Dichloro-5-isopropylbenzene(65432-04-4)
• EPA Substance Registry System: 1,3-Dichloro-5-isopropylbenzene(65432-04-4)

Safety Data

• Hazardous Substances Data: 65432-04-4(Hazardous Substances Data)

Usage

Physical state

Colorless liquid

Odor

Strong

Uses

Intermediate in the production of pharmaceuticals and agrochemicals

Chemical structure

Benzene ring with a chlorine atom at the 1 and 3 positions, and an isopropyl group at the 5 position

Toxicity

Toxic to aquatic organisms

Human health effects

Can cause skin and eye irritation

Safety precautions

Handle and store with care, follow proper safety procedures when working with it

InChI:InChI=1/C9H10Cl2/c1-6(2)7-3-8(10)5-9(11)4-7/h3-6H,1-2H3

Upstream product

• 106-46-7 para-dichlorobenzene 
• 75-26-3 isopropyl bromide 
• 541-73-1 1,3-Dichlorobenzene 

Downstream Products

• 68575-36-0 1,3-dichloro-5-(prop-1-en-2-yl)benzene 
• 129960-45-8 N-[1-methyl-1-(3,5-dichlorophenyl)ethyl]amine 

Relevant articles and documents

Synthesis of 3,5-dichloroalkylbenzene and recovery of 1,3-dichlorobenzene

A process for synthesizing 3,5-dichloroalkylbenzene and recovering 1,3-dichlorobenzene from a starting mixture of 1,3- and 1,4-dichlorobenzenes. The process includes the sequential steps of selectively alkylating the 1,3-dichlorobenzene in the starting mixture; isomerizing a portion of the 2,4-dichloroalkylbenzene produced to 3,5-dichloroalkylbenzene; separating the 1,4-dichlorobenzene from the isomeric mixture of dichlorocumenes; and selectively transalkylating the dichlorocumenes to yield alkylbenzene, 3,5-dichloroalkylbenzene and 1,3-dichlorobenzene. By selectively alkylating only a portion of the 1,3-dichlorobenzene, the reaction products are obtained in good yield and substantially free of undesirable by-products.

Process for preparing 3,5-dichloro-α-methylstyrene

In the preparation of 3,5-dichloro-α-methylstyrene by isopropylation of an m/p-dichlorobenzene mixture, isomerization of the resulting alkylation mixture, subsequent side chain bromination of the alkylation mixture and dehydrobromination of the resulting bromination mixture, the improvement which comprises reacting an excess of an m/p-dichlorobenzene mixture which contains at least 50% by weight of m-dichlorobenzene with isopropyl halide, isomerizing the resulting alkylation mixture under pressure in the presence of aluminum chloride until thermodynamic equilibrium has been attained, separating off the isomerized alkylation mixture from the unreacted m/p-dichlorobenzene mixture, and recycling the unreacted mixture for further reaction.