Octamethyltrisiloxane
Octamethyltrisiloxane (CAS: 107-51-7), with the linear formula [(CH3)3SiO]2Si(CH3)2 and a molecular weight of 236.53 g/mol, is a volatile linear siloxane. It is a colourless liquid primarily utilised in chemical synthesis and as a component in organosilicon formulations. Its properties make it valuable in various industrial applications requiring stable silicone-based materials.
![Octamethyltrisiloxane ([(CH3)3SiO]2Si(CH3)2) — chemical structure, CAS 107-51-7; Chemistry, fine chemical supplied by Tech Serve Solutions](/_next/image?url=https%3A%2F%2Fpub-f4d920c906024441a773a96f7098e551.r2.dev%2Fimages%2Fproducts%2F107-51-7.png&w=3840&q=75)
Chemical Synthesis
Octamethyltrisiloxane serves as a versatile building block or reagent in the synthesis of more complex organosilicon compounds. Its reactive siloxane bonds can be manipulated for various chemical transformations.
Organosilicon Formulations
This compound is incorporated into formulations requiring specific silicone properties, such as lubricants, sealants, or coatings. Its inherent thermal stability and low surface tension are advantageous.
Laboratory Reagent
As a well-defined organosilicon compound, it is used in research and development laboratories for studies involving siloxane chemistry and material science.
| Molecular weight | 236.53 |
|---|---|
| Linear formula | [(CH3)3SiO]2Si(CH3)2 |
| Assay | 98% |
| Boiling point | 153 °C(lit.) |
| Density | 0.82 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.384(lit.) |
| Vapour density | >1 (vs air) |
| Melting point | −82 °C(lit.) |
| Viscosity | 1.0 cSt(25 °C) |
Hazard statements
- H226Flammable liquid and vapour
- H410Very toxic to aquatic life with long-lasting effects
Precautionary statements
- P273Avoid release to the environment
- P501Dispose of contents and container per local regulations
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 29 °C / 84.2 °F |
| Transport (UN / ADR) | UN 1993C 3 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Risk statements (R) | 10 |
| Safety statements (S) | 23-24/25 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Octamethyltrisiloxane primarily used for?
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Octamethyltrisiloxane (CAS: 107-51-7) is primarily used in chemical synthesis and as a component in organosilicon formulations.
What is the CAS number and formula for Octamethyltrisiloxane?
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The CAS number for Octamethyltrisiloxane is 107-51-7, and its linear formula is [(CH3)3SiO]2Si(CH3)2.
What grade and purity does Tech Serve Solutions supply for Octamethyltrisiloxane?
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Tech Serve Solutions supplies Octamethyltrisiloxane with an assay of 98%. This product is not represented as USP, BP, EP, or other pharmacopoeia grades.
How should Octamethyltrisiloxane be handled safely?
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Octamethyltrisiloxane is a flammable liquid (H226) and is toxic to aquatic life with long-lasting effects (H410). Handle with appropriate personal protective equipment, including eyeshields and gloves, and ensure good ventilation. Store away from ignition sources. Refer to the Safety Data Sheet for comprehensive handling information.
How is Octamethyltrisiloxane packed, shipped, and exported?
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Tech Serve Solutions packs and ships Octamethyltrisiloxane according to international regulations for hazardous materials. As a global supplier, we facilitate export to various regions, ensuring compliance with all necessary documentation.
How can I request a quote or sample for Octamethyltrisiloxane?
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To request a quote or sample for Octamethyltrisiloxane, please contact our sales department via the website or directly through your established account channels.
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