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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Flash Point (tetramethyl orthosilicate): 26 - 31°C (DIN 51755, ASTM D 56)

Key value for chemical safety assessment

Flash point at 101 325 Pa:
26 °C

Additional information

Flash point values of 26°C (Evonik 2007) and 31°C (Birke 2000) were determined for tetramethyl orthosilicate with the use of closed cup method. The results are considered reliable and used as a weight of evidence. Also, a limit value of <79°C was determined for the substance using an open cup method (Birke 2000). Flash point values of 20°C, 28°C and 45°C were reported for the substance in secondary sources to which no reliability could be assigned. Differences in flash point values could be as a result of varying purities for individual commercial samples tested, and the method used.

A flash point of 26 - 31°C, with a boiling point of 121 - 122°C, indicates that the substance should be classified as a flammable liquid according to the criteria of EC Regulation 1272/2008.