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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Vapour pressure

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

Calculated vapour pressure at 20°C: <0.001 Pa

Key value for chemical safety assessment

Additional information

According to Column 2 of REACH Annex VII, the vapour pressure of a substance may be determined using (Q)SAR modelling if melting point of the substance is between 200 and 300°C. As the melting point of Allantoin was determined to be 229°C, the vapour pressure was assessed using (Q)SAR calculation via MPBPWIN v. 143.

Calculated vapour pressures are: 8.9 x 10-8 Pa (solid) and 1.8 x 10-5 Pa (subcooled liquid). These very low values are considered negligible. For ecotoxicological purpose the vapour pressure is therefore quoted as <0.001 Pa.