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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

As an ingredient of household cleaning products, STPP present in domestic waste waters is mainly discharged to the aquatic compartment , directly, via waste water treatment plants, via septic tanks, infiltration or other autonomous waste water systems. As STPP is an inorganic substance, biodegradation studies are not applicable. However, STPP can be hydrolysed in water to pyrophosphate and then to orthophosphate which can be assimilated by algae and/or by micro-organisms. STPP thus ends up in a form which is assimilated into the natural phosphorus cycle.