Octamethylcyclotetrasiloxane CAS NO.556-67-2
Name:Octamethylcyclotetrasiloxane
CAS No.:556-67-2
Appearance: colorless transparent oily liquid
Molecular formula: C8H24O4Si4
EINECS No.: 209-136-7
Molecular Weight: 296.6158
Density: (25℃, g/cm3): 0.9558
Melting point: 17.6°C, boiling point 175.8°C
Refractive index (25℃): 1.3960~1.3970
Boiling point: 175°C at 760 mmHg
Flash point: 63.2°C
Water Soluble: INSOLUBLE
Vapor Pressure: 1.57mmHg at 25°C
Molecular structure:
Performance and use:
This product is colorless, insoluble in water, and soluble in organic solvents such as benzene. It is polymerized into silicone polymer under acid-base catalysis, which is the basic raw material of silicone oil and silicone rubber, and can also be directly used as rubber filler treatment agent and cosmetic raw material.
Packaging and Storage:
Packed in plastic barrels, net weight 190kg/barrel, or ton barrels, net weight 950kg/barrel or international standard container packaging. It should be stored in a cool and dry place, waterproof and fireproof, and should not be mixed with oxidants, acids and alkalis. The storage area shall be equipped with fire-fighting equipment, leakage emergency treatment equipment and appropriate containment materials of the corresponding variety and quantity. Transported as dangerous goods, lightly loaded and unloaded during handling to prevent damage to packaging and containers.