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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Flash point

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Administrative data

Link to relevant study record(s)

Description of key information

Flash point [1,1,1,3,5,5,5-heptamethyl-3-[(trimethylsilyl)oxy]trisiloxane]: 59.5°C (ISO 3679)

Key value for chemical safety assessment

Flash point at 101 325 Pa:
59.5 °C

Additional information

A measured flash point of 59.5°C was determined for the substance using the ISO 3679 test method in study conducted in compliance with a known quality system (ISO9001). The result is considered to be reliable and is selected as key study.

In a supporting study, a measured flash point of 61°C was determined for the substance using ASTM D56 test method. Although, full details are not available, the result is considered to be reliable.

A measured flash point of 59.5°C and a predicted boiling point of 180°C indicate that the substance should be classified as a flammable liquid (Category 3) according to the criteria of Regulation (EC) No. 1272/2008.