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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Phototransformation in air

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Administrative data

Link to relevant study record(s)

phototransformation in air
Data waiving:
other justification
Justification for data waiving:

Description of key information

Phototransformation is not relevant.

Key value for chemical safety assessment

Additional information

No experimental data available. As phototransformation is not a standard information requirement in REACH and there is no indication from the CSA on the need to investigate further the fate and behaviour of the substance (Annex X 9.3.4. data requirement), no further testing is considered necessary. Moreover, in accordance with REACH Regulation, Annex XI, 3., a study on phototransformation in air can be omitted based on exposure considerations. Due to the negligible vapour pressure, the occurrence of substance "reaction mass of calcium hydrogen phosphonate and dialuminium tricalcium hexaoxide" in the gas phase of the atmosphere is very unlikely, and thus the substance is not expected to be a subject of direct or indirect phototransformation in air at all.