ChemicalBook >>Hexamethyldisiloxane>>Hexamethyldisiloxane(107-46-0)

Hexamethyldisiloxane(107-46-0)

Hexamethyldisiloxane(107-46-0)
Product IdentificationBack to Contents
【Product Name】

Hexamethyldisiloxane
【Synonyms】

Poly(dimethylsiloxane)
【CAS】

107-46-0
【Formula】

C6H18OSi2
【Molecular Weight】

162.38
【EINECS】

203-492-7
【RTECS】

JM9237000
【RTECS Class】

Primary Irritant
【Beilstein/Gmelin】

1736258
【Beilstein Reference】

4-04-00-04018
【EC Class】

highly flammable
Physical and Chemical PropertiesBack to Contents
【Appearance】

Fluid.
【Solubility in water】

Insoluble
【Melting Point】

-59
【Boiling Point】

101
【Vapor Pressure】

51 (30 C)
【Density】

0.764 g/cm3 (20 C)
【Heat Of Vaporization】

34.8 kJ/mol
【Usage】

Hydraulic fluid organo silicate mlo 5277.
【Refractive Index】

1.3774 (20 C)
First Aid MeasuresBack to Contents
【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 StorageBack to Contents
【Storage】

Keep away from sources of ignition. Store in a cool, dry place. Store in a tightly closed container. Keep under a nitrogen blanket. Flammables-area.
【Handling】

Use spark-proof tools and explosion proof equipment. Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes. Use only in a chemical fume hood.
Hazards IdentificationBack to Contents
【Inhalation】

May cause respiratory tract irritation. The toxicological properties of this substance have not been fully investigated.
【Skin】

Causes mild skin irritation.
【Eyes】

May cause eye irritation.
【Ingestion】

The toxicological properties of this substance have not been fully investigated. May be harmful if swallowed.
【Hazards】

Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers.
【EC Risk Phrase】

R 11
【EC Safety Phrase】

S 16 33
【UN (DOT)】

1993
Exposure Controls/Personal ProtectionBack to Contents
【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.
【Exposure Effects】

The toxological properties of this substance have not been fully investigated.
【Poison Class】

-
Fire Fighting MeasuresBack to Contents
【Flash Point】

4
【Autoignition】

340
【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. Containers may explode in the heat of a fire. Extinguishing media: Use carbon dioxide or dry chemical.
【Upper exp. limit】

21.8
【Lower exp. limit】

.5
【Fire Potential】

HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames.
Accidental Release MeasuresBack to Contents
【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 ReactivityBack to Contents
【Disposal Code】

24
【Stability】

No data.
【Incompatibilities】

Strong acids - strong bases - strong oxidizing agents.
【Decomposition】

Carbon monoxide, carbon dioxide, silicon oxide.
【Combustion Products】

Fire may produce irritating, corrosive and/or toxic gases.
Transport InformationBack to Contents
【UN Number】

1993
【Hazard Class】

3
【Packing Group】

I; II; III
【HS Code】

2931 00 95
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