Product Identification

Product Name

1,1,3,3-Tetramethyl-1,3-divinyldisiloxane

Synonyms

1,1,3,3-Tetramethyl-1,3-divinyldisiloxane
Bis(ethenyldimethylsilyl) ether
Ethenyl-(ethenyl-dimethylsilyl)oxy-dimethylsilane
Tetramethyl-1,3-divinyldisiloxane

CAS

2627-95-4

Formula

C8H18OSi2

Molecular Weight

186.4

EINECS

220-099-6

RTECS

JM9235250

RTECS Class

Other

Beilstein/Gmelin

1762585

Beilstein Reference

4-04-00-04080

Physical and Chemical Properties

Appearance

Colorless liquid.

Solubility in water

Insoluble

Melting Point

-100

Boiling Point

128 - 129

Density

0.8153 g/cm3 (20 C)

Partition Coefficient

4.15

Refractive Index

1.4123 (20 C)

First Aid Measures

Ingestion

Get medical aid. Wash mouth out with water.

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.

Eyes

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

Handling and Storage

Storage

Keep away from sources of ignition. Store in a cool, dry place. Store in a tightly closed container. Flammables-area.

Handling

Use spark-proof tools and explosion proof equipment. Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes.

Hazards Identification

Ingestion

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

Inhalation

Causes respiratory tract irritation. May be harmful if inhaled.

Skin

Causes skin irritation. May be harmful if absorbed through the skin.

Eyes

Causes eye irritation.

EC Risk Phrase

R 10 36/37/38

EC Safety Phrase

S 16 26 36

UN (DOT)

1993

Exposure Controls/Personal Protection

Personal Protection

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

24

Fire Fighting

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Will burn if involved in a fire. To extinguish fire use water spray, dry chemical, carbon dioxide, or chemical foam.

Accidental Release Measures

Small spills/leaks

Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Remove all sources of ignition. Use a spark-proof tool.

Stability and Reactivity

Stability

Stable under normal shipping and handling conditions.

Incompatibilities

Strong oxidizing agents, strong acids, bases.

Decomposition

Carbon monoxide, carbon dioxide, silicon oxide.

Transport Information

UN Number

1993