Heptamethyltrisiloxane contains highly active silicon hydrogen bonds, it is the basic raw material for the synthesis of modified trisiloxane. Modified trisiloxane is a structurally specific surfactant with superior wetting and spreading properties that significantly reduces the surface tension of the system.
Typical Applications
  • Raw material for the synthesis of silicone surfactants
Technical Index
CAS No. 1873-88-7
Appearance Colorless transparent liquid
Molecular formula C7H22O2Si3
Molecular weight 222.5
Content(%,≥) 99.0
Density(25℃,g/cm3) 0.819
Boiling point(℃) 142
Flash point(℃) 22
Refractive index(25℃) 1.3815


The Way of Silicone Innovation

Hangzhou Silway New Material Technology Co.,Ltd. Founded in 2014, is a young but fast-growing Heptamethyltrisiloxane manufacturer specialized in the research, development, production and marketing of Heptamethyltrisiloxane.

Silway focused on the modified siloxane and formulation technology, product line covers from agricultural silicone adjuvant, silicone water repellent, cosmetic silicones, sealant & additive, modified siloxane for die-casting.etc.

  • R&D

    Founders have over 20 years’ technical experience in silicone industry

  • Quality

    ISO9001 Certificated

  • Service

    Sales for international market all have at least 5 years experience, easy to communicate and professinal in silicone industry.

  • OEM

    Offer OEM service and customized products.

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Heptamethyltrisiloxane Industry Knowledge Extension