Overview
Methyl dichloroacetate is an ester of dichloroacetic acid, widely used as a chemical intermediate in industrial applications. Its reactive dichloromethyl group makes it valuable for synthesizing pharmaceuticals, pesticides, and specialty chemicals. The compound is typically produced through esterification of dichloroacetic acid with methanol. Due to its volatility and reactivity, methyl dichloroacetate requires careful handling and storage. It is classified as a hazardous substance under international regulations, necessitating compliance with safety protocols during transportation and use.
Physical and Chemical Properties
Methyl dichloroacetate is a colorless to pale yellow liquid with a pungent, ester-like odor. It has a density of 1.38 g/cm³ and boils at 143-145°C. The compound is soluble in most organic solvents but only slightly soluble in water, which limits its environmental persistence. Chemically, it is reactive toward nucleophiles due to the electron-withdrawing effect of the dichloromethyl group. It hydrolyzes slowly in water but rapidly under alkaline conditions, releasing dichloroacetic acid and methanol. Its flammability (flash point ~40°C) and compatibility with oxidizers must be considered in industrial settings.
Main Applications
In the pharmaceutical industry, methyl dichloroacetate serves as a key intermediate for drugs targeting metabolic disorders and antibiotics. Its dichloromethyl group is incorporated into molecules with biological activity. Agrochemical manufacturers use it to synthesize herbicides and fungicides, leveraging its reactivity to form carbon-chlorine bonds. Additionally, it is employed in organic synthesis for producing dyes, fragrances, and polymer modifiers. Specialty chemical applications include catalysis and crosslinking agents in coatings.
Safety and Storage
Methyl dichloroacetate poses health risks upon inhalation, ingestion, or skin contact, causing irritation and potential organ damage. Proper PPE (gloves, goggles, respirators) and fume hoods are mandatory in laboratories and factories. Storage requires airtight containers in cool, ventilated areas, segregated from oxidizers and bases. Firefighting measures involve dry chemical powder or CO₂—never water, as it may spread flames. Spills should be contained with inert absorbents and disposed of as hazardous waste under local regulations.
B2B Procurement Guide
When sourcing methyl dichloroacetate, prioritize suppliers with ISO certification and transparent SDS documentation. Verify batch-specific certificates of analysis (CoA) for purity (≥98%) and impurity profiles. Bulk procurement (drums or IBCs) typically offers cost advantages, but ensure containers are DOT-compliant for safe shipping. Spot-check deliveries for leaks or discoloration. Long-term contracts with qualified manufacturers can stabilize supply chains, especially for pharmaceutical-grade material.
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