Product Identification

Product Name

Tetramethyl orthocarbonate

Synonyms

Dimethoxymethylal
NSC 359558
Orthocarbonic acid, tetramethyl ester
Tetramethyl orthocarbonate

CAS

1850-14-2

Formula

C5H12O4

Molecular Weight

136.15

EINECS

217-438-5

Beilstein/Gmelin

1737682

Physical and Chemical Properties

Solubility in water

110 g/L (25 C)

Melting Point

-5

Boiling Point

114

Vapor Pressure

24 (25 C)

Density

1.023 g/cm3 (25 C)

Partition Coefficient

2.56

Heat Of Vaporization

33.79 kJ/mol

Refractive Index

1.385 (20 C)

First Aid Measures

Ingestion

If swallowed, wash out mouth with water provided person is conscious. Call a physician.

Inhalation

If inhaled, remove to fresh air. If not breathing give artificial respiration. If breathing is difficult, give oxygen.

Skin

In case of contact, immediately wash skin with soap and copious amounts of water. Remove contaminated clothing and shoes. Call a physician.

Eyes

In case of contact with eyes, flush with copious amounts of water for at least 15 minutes. Assure adequate flushing by separating the eyelids with fingers. Call a physician.

Handling and Storage

Storage

Keep tightly closed. Keep away from heat, sparks, and open flame. Store in a cool dry place.

Hazards Identification

Skin

Causes irritation.

Hazards

Emits toxic fumes under fire conditions. Vapor may travel considerable distance to source of ignition and flash back.

EC Risk Phrase

10 36/37/38

EC Safety Phrase

26 37

UN (DOT)

3272

Exposure Controls/Personal Protection

Personal Protection

Compatible chemical-resistant gloves. Chemical safety goggles. Protective clothing.

Exposure Effects

Vapor or mist is irritating to the eyes, mucous membranes, and upper respiratory tract. May be harmful by inhalation, ingestion, or skin absorption.

Fire Fighting Measures

Flash Point

22

Fire Fighting

Extinguish with carbon dioxide, dry chemical powder or appropriate foam. Do not use water. Wear self-contained breathing apparatus and protective clothing to prevent contact with skin and eyes.

Fire Potential

Flammable liquid.

Accidental Release Measures

Small spills/leaks

Cover with dry-lime, sand, or soda ash. Place in covered containers using non-sparking tools and transport outdoors. Ventilate area and wash spill site after material pickup is complete.

Stability and Reactivity

Stability

Moisture sensitive.

Incompatibilities

Moisture, acids and strong oxidizing agents.

Decomposition

Oxides of carbon.

Transport Information

UN Number

3272

Hazard Class

3

Packing Group

II