Product Identification

Product Name

Methyl malonyl chloride

Synonyms

Methyl chloroformylacetate
Methyl malonyl chloride
Propanoic acid, 3-chloro-3-oxo-, methyl ester

CAS

37517-81-0

Formula

C4H5ClO3

Molecular Weight

136.53

EINECS

253-540-6

Beilstein/Gmelin

1754078

Beilstein Reference

4-02-00-01886

Physical and Chemical Properties

Appearance

Yellow liquid.

Boiling Point

58

Density

1.273 g/cm3 (20 C)

Vapor Density

4.7

Refractive Index

1.43 (20 C)

First Aid Measures

Ingestion

If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.

Inhalation

Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.

Skin

Get medical aid immediately. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.

Eyes

Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Handling and Storage

Storage

Keep away from heat, sparks, and flame. Keep away from sources of ignition. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.

Handling

Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use only in a well ventilated area. Avoid contact with eyes, skin, and clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep container tightly closed. Avoid contact with heat, sparks and flame. Avoid ingestion and inhalation. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.

Hazards Identification

Ingestion

The toxicological properties of this substance have not been fully investigated. May cause irritation of the digestive tract and possible burns.

Inhalation

May cause respiratory tract irritation. The toxicological properties of this substance have not been fully investigated. May cause burns to the respiratory tract.

Skin

Causes skin irritation and possible burns.

Eyes

Lachrymator. Causes eye irritation and possible burns.

EC Risk Phrase

R 34 36/37

EC Safety Phrase

S 26 36/37/39 45

UN (DOT)

3265

Exposure Controls/Personal Protection

Personal Protection

Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.

Respirators

Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.

Fire Fighting Measures

Flash Point

80

Fire Fighting

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Use water spray to keep fire-exposed containers cool. Combustible Liquid. Containers may explode when heated. Extinguishing media: Do NOT use water directly on fire. Use water spray to cool fire-exposed containers. Use foam, dry chemical, or carbon dioxide. Use agent most appropriate to extinguish fire. Contact with water or steam may produce toxic and flammable vapors.

Accidental Release Measures

Small spills/leaks

Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Clean up spills immediately, using the appropriate protective equipment. Remove all sources of ignition.

Stability and Reactivity

Stability

Stable under normal temperatures and pressures. May decompose on exposure to moist air or water.

Incompatibilities

Strong oxidizing agents, bases, alcohols.

Decomposition

Hydrogen chloride, carbon monoxide, irritating and toxic fumes and gases, carbon dioxide, phosgene gas.

Transport Information

UN Number

3265