Product Identification
【Product Name】Poly(dimethylsiloxane)
【Synonyms】Silicone oil ；201甲基硅油
【CAS】63148-62-9
【EINECS】213-915-7
【RTECS】VX6390000
【RTECS Class】Primary Irritant
【Beilstein/Gmelin】NA

Physical and Chemical Properties
【Appearance】Colorless, viscous liquid.
【Solubility in water】Insoluble
【Melting Point】-50℃
【Density】0.96 g/cm3
【Usage】Lubricant.

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.
【Inhalation】Remove from exposure to fresh air immediately. Get medical aid if cough or other symptoms appear.
【Skin】Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists.
【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.
【Handling】Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid contact with heat, sparks and flame. Avoid ingestion and inhalation.

Hazards Identification
【Ingestion】Ingestion of large amounts may cause gastrointestinal irritation.
【Inhalation】May cause respiratory tract irritation.
【Skin】May cause skin irritation.
【Eyes】Causes eye irritation.

Exposure Controls/Personal Protection
【Personal Protection】Eyes: Wear appropriate protective eyeglasses or chemical safety ggles 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】-

Fire Fighting Measures
【Flash Point】300℃
【Autoignition】450℃
【Fire Fighting】Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Extinguishing media: For small fires, use dry chemical, carbon dioxide, water spray or alcohol-resistant 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.

Stability and Reactivity
【Stability】Stable under normal temperatures and pressures.
【Incompatibilities】Strong oxidizers.
【Decomposition】Silicon oxide.