Product Identification

Product Name

Dimethyl sulfate

Synonyms

Methyl 3-(3-methoxy-3-oxopropyl)sulfanylpropanoate

CAS

4131-74-2

Formula

C8H14O4S

Molecular Weight

206.26

EINECS

223-948-9

Beilstein/Gmelin

1781561

Beilstein Reference

4-03-00-00738

Physical and Chemical Properties

Boiling Point

66 - 68 (0.02 torr)

Density

1.1569 g/cm3 (20 C)

Refractive Index

1.47 (20 C)

First Aid Measures

Ingestion

Seek medical assistance.

Inhalation

Move victim to fresh air. Apply artificial respiration if victim is not breathing. Administer oxygen if breathing is difficult.

Skin

Remove and isolate contaminated clothing and shoes. Immediately flush with running water for at least 20 minutes.

Eyes

Immediately flush with running water for at least 20 minutes.

Hazards Identification

Inhalation

Inhalation of material may be harmful.

Skin

Contact may cause burns.

Eyes

See Skin.

Hazards

Containers may explode when heated.

EC Safety Phrase

S 23 24/25

UN (DOT)

3334

Exposure Controls/Personal Protection

Personal Protection

Wear appropriate protective gloves, clothing and goggles.

Respirators

Wear positive pressure self-contained breathing apparatus (SCBA).

Fire Fighting Measures

Flash Point

>110

Fire Fighting

Small Fires: Dry chemical, carbon dioxide, water spray or regular foam. Large Fires: Water spray, fog or regular foam.

Fire Potential

May burn but does not ignite readily.

Accidental Release Measures

Small spills/leaks

Do not touch or walk through spilled material. Stop leak if you can do it without risk. Prevent dust cloud. Avoid inhalation of asbestos dust.

Transport Information

UN Number

3334

Stability and Reactivity

Combustion Products

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