344079-1

Overview

1,3-Dichlorobenzene is a halogenated organic compound belonging to the dichlorobenzene isomer group. As a meta-substituted benzene derivative, it serves primarily as a building block in chemical synthesis. Industrial production typically involves chlorination of benzene or chlorobenzene under controlled conditions. The compound has been commercially significant since the mid-20th century, with global production estimated at several thousand metric tons annually. Its relatively stable aromatic ring structure makes it valuable for introducing chlorine substituents in downstream reactions while maintaining the benzene core's reactivity.

Physical and Chemical Properties

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This aromatic liquid exhibits characteristic properties of chlorinated hydrocarbons, including moderate volatility and limited water solubility. Its vapor pressure of 1.6 mmHg at 25°C indicates it will evaporate readily at room temperature. The chlorine atoms induce dipole moments, contributing to its solvent properties for non-polar compounds. Chemically, 1,3-dichlorobenzene demonstrates typical aromatic substitution reactions, though the meta configuration makes electrophilic substitutions less favorable than in para or ortho isomers. It resists hydrolysis but may decompose under extreme heat (above 500°C) to form toxic gases including hydrogen chloride and phosgene.

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17529-1主板参数

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Main Applications

Approximately 60% of 1,3-dichlorobenzene production is consumed as an intermediate in manufacturing agrochemicals, particularly herbicides and insecticides where the meta-chlorine positions provide optimal molecular geometry. It also serves in dye synthesis, especially for azo dyes requiring halogenated intermediates. Secondary applications include use as a high-boiling solvent for resins and waxes, and as a heat transfer fluid in specialized industrial processes. Recent research explores its potential as a precursor for advanced polymer materials, though these applications remain niche due to environmental concerns.

Safety and Storage

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As a volatile organic compound (VOC), 1,3-dichlorobenzene requires careful handling to prevent inhalation exposure and skin contact. Workplace exposure limits typically range 50-100 ppm (8-hour TWA). Storage tanks should be grounded to prevent static discharge, with secondary containment to address potential leaks. Proper personal protective equipment (PPE) includes chemical-resistant gloves, splash goggles, and organic vapor respirators for concentrated vapors. Spills should be contained with inert absorbents and disposed as hazardous waste according to local regulations. The compound is persistent in soil but undergoes moderate biodegradation in aquatic environments.

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729-5pro与729-5区别

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B2B Procurement Guide

Industrial buyers should specify technical grade (minimum 98% purity) or higher for synthesis applications, with impurity profiles tailored to end-use requirements. Common packaging includes 200kg steel drums or isotanks for bulk shipments. Request certificates of analysis (CoA) and ensure suppliers provide current REACH or TSCA compliance documentation. Consider regional logistics carefully - some jurisdictions restrict transportation of chlorinated aromatics. For solvent applications, compare evaporation rates and solvent power with alternatives like o-dichlorobenzene. Long-term contracts may offer price stability, as production costs fluctuate with chlorine and benzene feedstock markets.

Overview

Physical and Chemical Properties

Main Applications

Safety and Storage

B2B Procurement Guide

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