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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Waiving of studies:

In accordance with column 2 REACH Regulation 1907/2006/EC Annex VII and IX section to, biodegradation studies do not need to be conducted as the test substance disodium disilicate (delta-crystalline) is an inorganic substance.

Identification of degradation products (required in section 9.2.3 of Annex IX) does not need to be conducted as disodium disilicate (delta-crystalline) can be regarded as readily degradable in nature. The substance was shown to be degraded to water glass, which is identical to naturally occurring silicate, when coming in contact with water. No other harmful degradation products are to be expected (see IUCLID5 section 5.1.2 hydrolysis).