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Lab Alley
Lab Alley Dichloromethane (Methylene Chloride) Lab Grade
$58.24 - $1,454.87
In stockPrice varies by Size.
Dichloromethane (methylene chloride), CAS 75-09-2, specified at minimum 99.90% by weight with water below 100 ppm, APHA colour below 10 and acidity as HCl below 5 ppm. Amylene inhibitor is held at 40-100 ppm and specific gravity at 25/25 °C runs 1.3180-1.3210. Supplied from 500 mL to 55 gallons; note the 40 CFR Part 751 restrictions on methylene chloride recorded in its SDS.
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Description
Dichloromethane, lab grade, supplied against a published product specification sheet rather than a purity claim alone. CAS 75-09-2; synonym methylene chloride; molecular formula CH2Cl2; molecular weight 84.93 g/mol.
Product specification
- Methylene chloride: minimum 99.90% by weight (typical 99.99%)
- Water: maximum 100 ppm (typical 18 ppm)
- Colour APHA: maximum 10 (typical 5)
- Acidity as HCl: maximum 5 ppm (typical 0)
- Free halogens, ASTM D 4755: pass
- Inhibitor, amylene content: 40-100 ppm (typical 50.4 ppm)
- Appearance: clear liquid
- Specific gravity at 25/25 °C: 1.3180-1.3210 (typical 1.3200)
Physical data (from the SDS)
- Colourless liquid, mildly sweet odour; odour threshold 200-300 ppm
- Boiling point 40 °C
- Melting point -95 °C
- Density 1.325 g/mL at 25 °C
- Vapour pressure 353.2 mmHg at 20 °C; vapour density 2.93 (air = 1)
- Evaporation rate 0.7 (ether = 1)
- Dynamic viscosity 0.41 mPa.s at 25 °C
- Slightly soluble in water; log Pow 1.25
- Explosive limits 12% lower, 19% upper; autoignition 556 °C
- VOC content 0% (VOC-exempt solvent)
Regulatory restrictions on use
The safety data sheet for this substance points to 40 CFR Part 751 and records that methylene chloride cannot be distributed in commerce or processed for consumer paint or coating removal, and that from 28 January 2026 material at a concentration of 0.1% or more by weight may only be distributed or processed for a defined list of purposes. That list includes industrial or commercial use as a laboratory chemical. Buyers are responsible for confirming that their intended use falls within the permitted purposes.
Container sizes
500 mL, 1 litre, 2.5 litres, 4 litres, 1 gallon, 5 gallons and 55 gallons.
Frequently asked questions
What is the full product specification?+
Methylene chloride minimum 99.90% by weight (typical 99.99%); water maximum 100 ppm (typical 18); colour APHA maximum 10 (typical 5); acidity as HCl maximum 5 ppm (typical 0); free halogens by ASTM D 4755 pass; amylene inhibitor 40-100 ppm (typical 50.4); appearance clear liquid; specific gravity at 25/25 °C 1.3180-1.3210 (typical 1.3200).
Is this grade inhibited?+
Yes. The specification sheet gives an amylene inhibitor content of 40-100 ppm, with a typical result of 50.4 ppm. Amylene suppresses the formation of acidic decomposition products in storage; the specification also caps acidity as HCl at 5 ppm.
What are the key physical properties?+
Boiling point 40 °C, melting point -95 °C, density 1.325 g/mL at 25 °C, vapour pressure 353.2 mmHg at 20 °C, vapour density 2.93 relative to air, dynamic viscosity 0.41 mPa.s at 25 °C, molecular weight 84.93 g/mol, and log Pow 1.25. It is only slightly soluble in water. The SDS records VOC content as 0% because dichloromethane is a VOC-exempt solvent.
Are there regulatory restrictions on how it can be used?+
Yes. The SDS cites 40 CFR Part 751 and states that this substance cannot be distributed in commerce or processed for consumer paint or coating removal, and that from 28 January 2026 material at 0.1% or more by weight may only be distributed or processed for a defined list of purposes - one of which is industrial or commercial use as a laboratory chemical. Confirm your intended use falls within that list before ordering.
Is it flammable?+
The SDS gives explosive limits of 12% lower and 19% upper with an autoignition temperature of 556 °C, and an evaporation rate of 0.7 relative to ether. The odour threshold is 200-300 ppm, so odour is not a reliable warning of exposure - use engineering controls and monitoring rather than smell.
What container sizes are available?+
500 mL, 1 litre, 2.5 litres, 4 litres, 1 gallon, 5 gallons and 55 gallons.
