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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Description of key information

The density of Boron Trifluoride estimated by calculation from the Ideal Gas Law is 2.77 g/L at 25°C/1 atm.

Key value for chemical safety assessment

Additional information

According to REACH annex VII, column 2, a study on the density does not need to be conducted as Boron Trifluoride is a gas.

An estimation can be based on the Ideal Gas Law as follows: d=MW*P/(R*T), and gives at 25°C and 1 atm:

d= 67.81 g.mol-1 * 101325 Pa /(8.3145 m3.Pa.K-1.mol-1 *298.15 K) = 2772 g/m3 = 2.77 g/L.