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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Boiling point

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boiling point
Type of information:
experimental study
Adequacy of study:
key study
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
Principles of method if other than guideline:
experimental measurement (method not specified)
GLP compliance:
not specified
Type of method:
other: No data
Key result
Boiling pt.:
84.4 °C
Atm. press.:
1 013 hPa

Data included in the Project 801® Database are compiled and evaluated by the Design Institute for Physical Property Data (DIPPR) of the American Institute of Chemical Engineers. As such, the value specified in the DIPPR 801® Database represents the best available normal boiling point value for trimethoxysilane. The AIChE DIPPR 801 Database specifies that the uncertainty associated with the normal boiling point value for trimethoxysilane is < 1%.

A boiling point value of 84.4°C at 1013 hPa was reported for the substance in a collection of reliable data which has been subject to peer-review and in which the original data sources are traceable. The result is considered to be reliable.

Description of key information

Boiling point: 84.4°C at 1013 hPa

Key value for chemical safety assessment

Boiling point at 101 325 Pa:
84.4 °C

Additional information

Two reliable boiling point values are available for the submission substance. A boiling point value of 84.4°C at 1013 hPa was reported for the substance in a handbook or collection of reliable data which has been peer-reviewed. The result is considered to be reliable and is selected as key study.

This value is supported by a measured boiling point of 82.1°C at 1000 hPa in accordance with EU Test Method A.2.

In available secondary sources to which reliability could not be assigned, boiling point values in the range 81 -87°C at 1013 hPa were reported for the substance.

The variations in boiling points may be due to difference in substance purity, unrecorded deviations from standard atmospheric pressure or deficiencies in the test methodology.