Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

According to EU method C. 4 -E (Determination of the "Ready" Biodegradability - Closed Bottle Test) a degradation of 12 % after 28 days was observed. For the positive control (with reference substance) the biodegrdation was 91 %. In conclusion dibutyl hydrogen phosphate is not readily biodegradable.

The inherent biodegradability of dibutyl hydrogen phosphate was determined via the removal of the DOC. Within 28 days a degradation of > 98 % was determined according to the EU Method C.9 (Biodegradation: Zahn-Wellens Test). Therefore dibutyl hydrogen phosphate is considered to be inherently biodegradable.