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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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


Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

In accordance with column 2 of REACH Annex VII, the Density study (required in section 7.4) does not need to be conducted as the substance is a gas.

Key value for chemical safety assessment

Additional information

The density of the substance has been estimated by calculation based on its molecular weight and the Ideal Gas Laws. At 20°C and 101,300 Pa, the volume of 1 mole of an Ideal Gas is: nRT / P = 0.0241 m3 (where n is 1 mole; R is the gas constant, 8.314 J/K/mol; T is the temperature, 293.15 K; and P is the pressure, 101,300 Pa) The molecular weight of chloro(methyl)silane is 80.59 g/mol. Therefore, the density is 80.59 / 0.0241 = 3343.98 g/m3 = 3.34 kg/m3