Product Identification

Product Name

Methyl malonate

Synonyms

Dimethyl 1,3-propanedioate
Dimethyl propanedioate
Malonic acid, dimethyl ester
Methyl malonate
Propanedioic acid, dimethyl ester

CAS

108-59-8

Formula

C5H8O4

Molecular Weight

132.12

EINECS

203-597-8

RTECS

OO0950000

RTECS Class

Primary Irritant

Merck

12,6169

Beilstein/Gmelin

774261

Beilstein Reference

4-02-00-01880

Physical and Chemical Properties

Appearance

Clear, colorless liquid.

Solubility in water

Very soluble

Melting Point

-62

Boiling Point

181

Vapor Pressure

45 (101 C)

Density

1.1722 g/cm3 (0 C)

pKa/pKb

11.79 (pKa)

Heat Of Vaporization

61.88 kJ/mol

Heat Of Combustion

-2313 kJ/mol

Usage

A common reagent for organic synthesis.

Refractive Index

1.4149 (20 C)

First Aid Measures

Ingestion

Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.

Inhalation

Remove from exposure to fresh air immediately.

Skin

Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.

Eyes

Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids.

Handling and Storage

Storage

Store in a cool, dry place. Keep container closed when not in use.

Handling

Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation.

Exposure Controls/Personal Protection

Personal Protection

Eyes: Wear safety glasses and chemical goggles if splashing is possible. Skin: Wear appropriate protective gloves and clothing to prevent skin exposure. Clothing: Wear appropriate protective clothing to minimize contact with skin.

Respirators

Wear a NIOSH/MSHA or European Standard EN 149 approved full-facepiece airline respirator in the positive pressure mode with emergency escape provisions.

Exposure Effects

The toxicological properties of this material have not been investigated.

Poison Class

4

Fire Fighting Measures

Flash Point

90

Autoignition

440

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. Extinguishing media: Use agent most appropriate to extinguish fire.

Upper exp. limit

17.4

Lower exp. limit

1.3

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.

Stability and Reactivity

Disposal Code

1

Incompatibilities

Acids - bases - oxidizing agents - reducing agents.

Stability

Stable under normal temperatures and pressures.

Decomposition

Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Transport Information

HS Code

2917 19 10

Hazards Identification

EC Safety Phrase

S 23 24/25