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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

DBHP hydrolyses in water. DBHP is completely transformed in phosphonic acid and butanol.

The reported value of t1/2 of 18 h at 25 °C is measured at pH 7.

Key value for chemical safety assessment

Half-life for hydrolysis:
18 h
at the temperature of:
25 °C

Additional information

The test item degradation at 50 °C is complete for the pH 9 buffer after 2.4 hours and for the pH 4 and 7 buffers after five days.

Half life = 132 h at pH 4 and 25 °C; Half life = 18 h at pH 7 and 25 °C.