Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Melting point / freezing point

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

Melting point (1,1,1,3,3,3-hexamethyldisilazane): -76.2°C at 1013 hPa (EU Method A.1)

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
-76.2 °C

Additional information

A measured melting point of -76.2°C ± 1.9°C was determined for the substance in accordance with a relevant test method and in compliance with GLP. The result is considered to be reliable and selected as key study. In available secondary sources to which reliability could not be assigned, melting point values of -70°C, -80°C and <-78°C were reported for the substance.