What is Dichloromethane (DCM)?

Dichloromethane, also called methylene chloride, has CAS 75-09-2 and molecular formula CH₂Cl₂. It is a volatile, low-boiling chlorinated solvent used for extraction, cleaning and chemical processing.

What are the main uses of DCM?

It is used as an extraction solvent, paint stripper, degreaser, aerosol component, and solvent in pharmaceutical and chemical synthesis. It is also used in polyurethane foam blowing and plastics processing.

What specifications should be confirmed before ordering?

Confirm assay, water content, acidity, color, evaporation residue and chlorinated impurities. For high-purity solvent use, also check that the low-water and acidity limits match the intended application.

How should Dichloromethane be stored and handled?

Store in tightly sealed containers in a cool, dry, ventilated area away from heat, sparks and strong oxidizers. Use appropriate ventilation and PPE, and follow the safety information for exposure, spill, disposal and first-aid procedures.

Why is low water content important for DCM solvent grades?

Dichloromethane can pick up moisture during handling, and excess water may interfere with moisture-sensitive reactions, extraction efficiency or coating performance. High-purity solvent grades therefore specify low water content, often below about 0.01%, to maintain drying power and chemical compatibility.

Dichloromethane (DCM) CAS 75-09-2

Dichloromethane (DCM, methylene chloride), CAS 75-09-2, is a volatile, low-boiling chlorinated solvent used in paint stripping, metal degreasing, pharmaceutical extraction, polycarbonate production and polyurethane foam blowing. Confirm the required grade, water content and acidity, then request a quotation with COA/TDS/SDS for bulk supply.

CAS: 75-09-2
Synonyms: Methylene chloride, DCM, Methylene dichloride, Methane dichloride, Methylene bichloride
Einecs: 200-838-9
Molecular Formula: CH₂Cl₂
Grade: Industrial grade 99%
Package: 250kg/drum

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Product Description

Dichloromethane (DCM), CAS 75-09-2, is methylene chloride, a volatile chlorinated solvent; the EC/EINECS number is 200-838-9.

Synonyms: Methylene chloride; DCM; Methylene dichloride; Methane dichloride.

CAS: 75-09-2.

Molecular formula: CH₂Cl₂.

Molecular weight: 84.93.

EC number: 200-838-9.

It is a colorless, low-boiling liquid with a mildly sweet odor; the melting point is about -97 °C, the boiling point about 39.8 °C and the density about 1.325 g/cm³. It is slightly soluble in water and miscible with most organic solvents, and is non-flammable under normal conditions.

Its vapor can form a flammable mixture at about 14-22 vol% in air at elevated temperature, with an autoignition temperature above 500 °C; confirm the current safety data for storage and handling.

It is produced by chlorination of methane or methyl chloride.

It is used as an extraction solvent for pharmaceuticals, natural products and caffeine decaffeination.

It is used in paint stripping, metal degreasing and precision cleaning.

It is used in polycarbonate resin production, polyurethane foam blowing, aerosol formulations and adhesive systems.

Confirm assay, water content, acidity, color, evaporation residue and chlorinated impurities; select the stabilizer type and low-water limits for the intended application.

Store in tightly sealed containers in a cool, dry, ventilated area away from heat, sparks, strong oxidizers and aluminum powder; use ventilation and suitable PPE.

Confirm the current product-specific specification.

Confirm packaging with the requested quantity and destination requirements.

Document requirements should be confirmed from the current specification, SDS, COA, or other product-specific files.

Regulated-use suitability must be confirmed separately with current product-specific documentation.

The page is an RFQ entry point and does not state stock, price, MOQ, or fixed lead time.

For an RFQ, state the intended use, required specification, quantity, packaging, destination, and document needs.

FAQ - Technical & Supply Chain

Q:
What is Dichloromethane (DCM)?

A: Dichloromethane, also called methylene chloride, has CAS 75-09-2 and molecular formula CH₂Cl₂. It is a volatile, low-boiling chlorinated solvent used for extraction, cleaning and chemical processing.
Q:
What are the main uses of DCM?

A: It is used as an extraction solvent, paint stripper, degreaser, aerosol component, and solvent in pharmaceutical and chemical synthesis. It is also used in polyurethane foam blowing and plastics processing.
Q:
What specifications should be confirmed before ordering?

A: Confirm assay, water content, acidity, color, evaporation residue and chlorinated impurities. For high-purity solvent use, also check that the low-water and acidity limits match the intended application.
Q:
How should Dichloromethane be stored and handled?

A: Store in tightly sealed containers in a cool, dry, ventilated area away from heat, sparks and strong oxidizers. Use appropriate ventilation and PPE, and follow the safety information for exposure, spill, disposal and first-aid procedures.
Q:
Why is low water content important for DCM solvent grades?

A: Dichloromethane can pick up moisture during handling, and excess water may interfere with moisture-sensitive reactions, extraction efficiency or coating performance. High-purity solvent grades therefore specify low water content, often below about 0.01%, to maintain drying power and chemical compatibility.

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