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Organic silicones

Octaphenylcyclotetrasiloxane

CAS number

546-56-5

Molecular formula C48H40O4Si4
Product name Octaphenylcyclotetrasiloxane
Molecular Structure

Appearance:White powder.

Density:1.18

Boiling Point:334ºC

Melting Point:196-200ºC

Flash Point:200ºC

Refractive Index:1.66

Water Solubility:insoluble

Stability:Stable under normal temperatures and pressures.

Storage Condition:Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.


CAS NO. 546-56-5 is a chemical compound known as 2-Methyl-2-butene. It is an organic compound, a colorless liquid with a pungent odor. It is a hydrocarbon and is classified as an alkyne.


2-Methyl-2-butene is synthesized by the reaction of acetylene with methanol. It is also produced in the production of gasoline, kerosene, naphtha, and various other petroleum products. It is used as a raw material in the production of a variety of chemicals and materials, including synthetic rubber, pharmaceuticals, and adhesives.


2-Methyl-2-butene is a highly flammable liquid and can form explosive mixtures with air. It is considered a hazardous material and should be handled with appropriate safety precautions. It is toxic and can cause irritation to skin and eyes upon contact. It is also combustible and can produce toxic fumes when heated.


2-Methyl-2-butene has a wide range of applications in the chemical and pharmaceutical industries. It is used in the synthesis of butadiene, which is used to produce synthetic rubber, and it is also used in the manufacture of various pharmaceuticals, such as painkillers and anti-depressants. It is also used in the production of adhesives, fuels, lubricants, and other petroleum products.


2-Methyl-2-butene is a versatile chemical compound with a wide range of applications. Its properties make it a valuable raw material for the chemical and pharmaceutical industries. As with all chemicals, it should always be handled with appropriate safety precautions.


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