CAS 102-47-6 corresponds to 3,4-dichlorobenzyl chloride, which is an aromatic halogenated hydrocarbon containing three chlorine atoms. It is mainly used as an intermediate in the organic synthesis of pesticides, pharmaceuticals, and dyes.

Basic Information
-Chinese name: 3,4-dichlorobenzyl chloride (alias: 3,4-dichlorobenzyl chloride, α, 3,4-trichlorotoluene, 1,2-dichloro-4-chloromethylbenzene)
-English name: 3,4-Dichlorobenzyl chloride/1,2-Dichloro-4- (chloromethyl) benzene
-Molecular formula: C ₇ H ₅ Cl ∝
-Molecular weight: 195.47 g/mol
-EINECS number: 203-033-0
-Structural features: Dichloro substitution at positions 3 and 4 of the benzene ring, with chloromethyl (- CH ₂ Cl) as the side chain

Physicochemical properties
-Appearance: Colorless to pale yellow transparent liquid
-Density: 1.41 g/cm ³ (25 ℃)
-Melting point: -3 ℃
-Boiling point: 122-124 ℃ (14 mmHg); Boiling point at atmospheric pressure is about 241 ℃
-Flash point: 155 ℃
-Refractive index: 1.5775
-Solubility: insoluble in water; Dissolve in organic solvents such as ethanol, acetone, and ether
-Odor: Strong irritant odor

main purpose
1. Pesticide synthesis: key intermediates for preparing active ingredients such as insecticides and herbicides
2. Pharmaceutical industry: used for synthesizing molecular frameworks of antibacterial, antifungal and other drugs
3. Dyes and other fine chemicals: participate in synthesis reactions of dyes, polymers, etc. as functionalized precursors

Safety and Storage
-Hazard category: Class 8 corrosive substance (GHS05), irritating (GHS07)
-Health hazards: Strong irritation and burn risk to the skin, eyes, and respiratory tract; Inhaling vapor can cause coughing and difficulty breathing
-Transport number: UN 3265 (PG II)
-Storage requirements: Seal and store in a cool and ventilated place, away from sources of fire, oxidants, alkalis, and alcohols
-Protective advice: Wear protective goggles, gloves, and a gas mask during operation to avoid direct contact or inhalation

This substance is an artificially synthesized compound that does not exist in nature. In industry, it is usually prepared by chloromethylation of dichlorobenzene.

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3, 4-Dichlorobenzyl chloride CAS 102-47-6
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