Educational content for trained professionals. Not a Safety Data Sheet, not medical advice. In an emergency, call your local poison control or emergency services immediately. Terms of use.
Dimethyl methylphosphonate
Also known as: DIMETHYL METHYLPHOSPHONATE · 756-79-6 · DMMP · Fyrol DMMP
- CAS No.
- 756-79-6
- Formula
- C3H9O3P
- Molar mass
- 124.08 g/mol
- PubChem CID
- 12958
Flammable
Corrosive
Harmful / Irritant
Health hazard
Summary
Dimethyl methylphosphonate (C3H9O3P), CAS 756-79-6. Common in labs and industry. Read on for hazards, storage, PPE and mixing rules.
Background
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Physical properties
No experimental physical properties indexed yet. Try PubChem for the raw record.
Hazards
Ignites easily when exposed to a flame or spark.
Attacks skin, eyes and materials.
May cause skin, eye or respiratory irritation.
Serious long-term health effects (CMR, respiratory sensitizer).
Hazard statements
- H226
- H318
- H319: Causes serious eye irritation [Warning Serious eye damage/eye irritation]
- H332
- H340: May cause genetic defects [Danger Germ cell mutagenicity]
- H361: Suspected of damaging fertility or the unborn child [Warning Reproductive toxicity]
- H227: Combustible liquid [Warning Flammable liquids]
- H351: Suspected of causing cancer [Warning Carcinogenicity]
- H360F: May damage fertility [Danger Reproductive toxicity]
Storage
Keep at room temperature, below 30 °C, out of direct heat.
Store somewhere well-ventilated and away from any ignition source.
Metal drums or tinted glass, tightly sealed.
Strong acids, strong bases and powerful oxidizers.
Personal protective equipment
Nitrile or butyl, at least 0.4 mm thick.
Safety goggles with side shields.
A2 organic-vapor cartridge if the room isn't well ventilated.
Occupational exposure limits (HSE)
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EU harmonised classification (ECHA C&L)
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Transport
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FDA recalls & enforcement
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Compatibilities
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Open comparator with Dimethyl methylphosphonatePractical safety notes
- Flammable. Keep away from open flames, hot surfaces and sparks. Ground containers when transferring.
- Corrosive. Wear chemical goggles, faceshield and chemical-resistant gloves. Have an eyewash within reach.
- Irritant / harmful. Ventilate the workspace and avoid skin contact.
- Serious health hazard (carcinogen, mutagen, reprotoxic, respiratory sensitizer). Substitute if possible; otherwise closed systems and medical surveillance.
Derived from the GHS classification shown above. These notes are generic guidance and do not replace the manufacturer's SDS or your local risk assessment.
FAQ
Is Dimethyl methylphosphonate flammable?+
Yes. Dimethyl methylphosphonate (CAS 756-79-6) carries the GHS02 flame pictogram. Keep it away from ignition sources, use non-sparking tools, and ground metal containers when transferring liquid.
What PPE should I wear when handling Dimethyl methylphosphonate?+
Chemical-splash goggles and a faceshield, chemical-resistant gloves (nitrile or butyl) and an apron are the minimum. Work inside a fume hood or use a suitable respirator. Check SDS section 8 for material-specific breakthrough times.
How should Dimethyl methylphosphonate be stored?+
Store Dimethyl methylphosphonate (CAS 756-79-6) in tightly closed original containers, in a cool, dry, well-ventilated area away from incompatible materials. Use a flammable-liquid cabinet and keep away from oxidizers and heat. Segregate acids from bases and keep away from metals that can be attacked.
Is Dimethyl methylphosphonate dangerous for the environment?+
No specific environmental pictogram (GHS09) is listed in our records for Dimethyl methylphosphonate, but any chemical waste should be handled through your site's hazardous-waste procedure, not poured down the drain.
Where can I find the official Safety Data Sheet for Dimethyl methylphosphonate?+
Official, up-to-date SDS documents are published by each manufacturer (Sigma-Aldrich, Merck, Thermo Fisher, VWR, Carl Roth, etc.) and by regulators such as ECHA and NIOSH. This page is an educational summary and does not replace the manufacturer's SDS.
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