TRISILOXANEA grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.
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Transport classification per the UN Model Regulations / 49 CFR 172.101 Hazardous Materials Table. Confirm against the grade-specific SDS (Section 14) before shipping.
Octamethyltrisiloxane (MDM) is a linear trisiloxane with a viscosity of approximately 1 cSt at 25°C. It is slightly longer chain than hexamethyldisiloxane (0.65 cSt) and is used as an intermediate in silicone polymer production, as a chain stopper, and as a volatile carrier fluid in industrial formulations.
Frequently Asked Questions
What is octamethyltrisiloxane?
Octamethyltrisiloxane (MDM, CAS 107-51-7, formula C8H24O2Si3) is the simplest linear trisiloxane, a low-viscosity volatile silicone fluid. It belongs to the silicone fluids and oils family and is the M-D-M trisiloxane member of the methyl siloxane series.
What is the density of octamethyltrisiloxane?
Octamethyltrisiloxane is a low-density, low-viscosity liquid at room temperature, with a density on the order of about 0.82 g/cm3. Refer to the SDS and CoA for the exact specification of the supplied lot.
What is octamethyltrisiloxane used for?
As a volatile, low-viscosity silicone fluid it is used as a carrier and spreading solvent and as a viscosity-reducing diluent for higher-viscosity silicone fluids in industrial and formulated silicone systems.
How does MDM relate to other silicone fluids?
MDM is the three-unit linear methyl siloxane; longer-chain analogs build the polydimethylsiloxane fluid series. Its short chain gives the low viscosity and volatility that distinguish it from higher-molecular-weight silicone oils.
What is the cost of bulk octamethyltrisiloxane?
Bulk pricing depends on volume, packaging (drums, totes, or IBCs), and freight; request a current quote with your quantity and destination. A CoA and SDS are provided with bulk orders.