Methyl phosphonous dichloride
A colorless liquid with a pungent odor.
Registry Numbers and Inventories.
Melting point, °C
Boiling point, °C
Vapor density (air=1)
1.304 g/cm3 (20 C)
Solubility in water
1.4925 (20 C)
Hazards and Protection.
Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Wear appropriate chemical protective clothing.
Wear positive pressure self-contained breathing apparatus.
Keep sparks, flames, and other sources of ignition away. Keep material out of water sources and sewers. Build dikes to contain flow as necessary. Attempt to stop leak if without undue personnel hazard. Use water spray to knock-down vapors. Do not use water on material itself. Neutralize spilled material with crushed limestone, soda ash, or lime.
Incompatible with strong oxidizing agents, alcohols, bases (including amines) May react vigorously or explosively
Powder or liquid is pyrophoric.
Do not extinguish fire unless flow can be stopped. Use graphite, soda ash, powdered sodium chloride, or suitable dry powder. Do not use water on material itself. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible.
May ignite on contact with moist air or moisture. May burn rapidly with flare-burning effect. Some react vigorously or explosively on contact with water. Some may decompose explosively when heated or involved in a fire. May re-ignite after fire is extinguished. Runoff may create fire or explosion hazard.
Fire will produce irritating, corrosive and/or toxic gases.
The toxological properties of this substance have not been fully investigated.
Inhalation of decomposition products may cause severe injury or death.
Contact with substance may cause severe burns.
Seek medical assistance.
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Administer oxygen if breathing is difficult.
Remove and isolate contaminated clothing and shoes. In case of contact with substance, immediately flush with running water for at least 20 minutes.
In case of contact with substance, immediately flush with running water for at least 20 minutes.
Std. Transport #