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Physical & Chemical properties

Flash point

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Description of key information

Flash point (1,1,1,3,3,3-hexamethyldisilazane): 11.4°C at 1013 hPa (ASTM D-3828-87)

Key value for chemical safety assessment

Flash point at 101 325 Pa:
11.4 °C

Additional information

Several reliable measured flash point data are available for the substance. A measured flash point of 11.4°C was determined for the substance in accordance with relevant National Standard Method. The result is considered to be reliable and selected as key study. This value is supported by other reliable values in the range 10 - 27°C using relevant test methods. Also, an open cup flash point value of <79°C was determined for the substance. In other secondary sources to which reliability could not be assigned, flash point values of 8.9 - 15°C were reported for the substance. The key study has been selected because it contains the most details about the test methods.

Flash point of 11.4°C and a measured boiling point of 125°C, indicate that the substance should be classified as a highly flammable liquid according to the criteria of EC Regulation 1272/2008.