Product Identification

Product Name

Dimethyl maleate

Synonyms

(Z)-Dimethyl 2-butenedioate
2-Butenedioic acid (2Z)-, dimethyl ester
Dimethyl (Z)-butenedioate
Dimethyl cis-butenedioate
Dimethyl cis-ethenedicarboxylate
Maleic acid, dimethyl ester

CAS

624-48-6

Formula

C6H8O4

Molecular Weight

144.13

EINECS

210-848-5

RTECS

EM6300000

RTECS Class

Primary Irritant

Beilstein/Gmelin

8759656

EC Class

harmful, irritant

Physical and Chemical Properties

Appearance

Clear, colorless liquid.

Solubility in water

Soluble

Melting Point

-17.5

Boiling Point

205

Density

1.153 g/cm3 (20 C)

Usage

Improves the hardness and toughness of polymer films.

Vapor Density

4.97

Refractive Index

1.4416 (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

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

Skin

Get medical aid. 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. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep container tightly closed. Avoid contact with heat, sparks and flame. Use with adequate ventilation. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.

Hazards Identification

Ingestion

May cause irritation of the digestive tract. May be harmful if swallowed.

Inhalation

May cause respiratory tract irritation. Effects of inhalation may be delayed.

Skin

Causes skin irritation. Harmful if absorbed through the skin. Effects of contact may be delayed.

Eyes

Causes eye irritation.

Hazards

When heated, vapors may form explosive mixtures with air: indoors, outdoors, and sewers explosion hazards.

EC Risk Phrase

R 21/22 36

EC Safety Phrase

S 26 36/37/39

UN (DOT)

2810

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.

Poison Class

4

Fire Fighting Measures

Flash Point

95

Fire Fighting

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Use water spray to keep fire-exposed containers cool. Combustible Liquid. May be ignited by heat, sparks, and flame. Containers may explode when heated. Extinguishing media: Use water spray to cool fire-exposed containers. For small fires, use dry chemical, carbon dioxide, or water spray. For large fires, use dry chemical, carbon dioxide, alcohol-resistant foam, or water spray.

Fire Potential

Combustible material: may burn but does not ignite readily.

Accidental Release Measures

Small spills/leaks

Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Avoid runoff into storm sewers and ditches which lead to waterways. Clean up spills immediately, using the appropriate protective equipment. Remove all sources of ignition. Provide ventilation. Do not get water inside containers.

Stability and Reactivity

Incompatibilities

Oxidizing agents

Stability

Stable under normal temperatures and pressures.

Decomposition

Carbon monoxide, carbon dioxide.

Combustion Products

Fire may produce irritating, corrosive and/or toxic gases.

Transport Information

UN Number

2810

Hazard Class

6.1

Packing Group

I; II; III

HS Code

2917 19 90