Dongguan City Betterly New Materials Co., Ltd.


Hexaphenylcyclotrisilazane is one of the most important cyclosiloxanes. It has good hydrolysis stability because its phenyl groups have high steric hindrance. It can effectively improve heat resistance of silicone rubber if it is applied into heat resistance agent to prevent oxidative crosslinking and main chain degradation of silicone rubber side chains. And when it is heated at temperature of 400℃ for a long time, it can be formed into polymer for a good heat resistance coating.

CAS: 1009-93-4

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Category: Silane
  • Physical Properties and Technology Index of 1,1,3,3,5,5-Hexamethylcyclotrisilazane

    Colorless transparent liquid, non-toxic, can be dissolved in organic solvent, such as ethyl acetate, methylbenzene, cyclohexane

    ItemProperty Index
    CAS No.4570-25-6
    Molecular weight591.924
    Density (25℃) g/cm31.19
    Flash point (close cup method)330.135℃
    SolublenessCan be soluble in toluene, heptane
    and other organic solvents
    AppearanceWhite crystal
    Hexaphenyl cyclotrisilazane content≥98.0%

  • Storage of 1,1,3,3,5,5-Hexamethylcyclotrisilazane

    Store it at cool, ventilated warehouse. Temperature of the warehouse should <37℃. Please do not put it along with oxidant, edible chemical and readjusting. Keep container sealed. Be far away from fire, heat source.

  • Precautions of 1,1,3,3,5,5-Hexamethylcyclotrisilazane

    • The material must be used in well-ventilated place. Wear necessary safety protection to avoid over inhaling in processing. Do not eat. 

    • Handle with care, details refer to MSDS. In addition, safety regulation of country or local government should be obeyed.

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