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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Link to relevant study record(s)

boiling point
Data waiving:
study scientifically not necessary / other information available
Justification for data waiving:
the study does not need to be conducted because the substance is a solid which melts above 300°C

Description of key information

Boiling point: HEDP-H melts above 450°C.

Key value for chemical safety assessment

Additional information

The requirement to conduct a boiling point study for the substance is waived because the substance has a melting temperature of >450°C. This statement is supported by a recent, reliable DSC test which demonstrates that HEDP acid does not melt below 450°C. The DSC thermograms show evidence of loss of water at about 100°C.

In available secondary sources to which reliability could not be assigned, initial boiling point values of approximately 100°C, 104°C, 105°C AND >100°C were reported for the substance.