Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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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EC number: 231-975-2 | CAS number: 7783-03-1
Endpoint summary
Administrative data
Description of key information
Data for tungstic acid were used when available and, protectively, data from sodium tungstate were used to fill gaps where necessary. See read-across document for details on rationale.
Additional information
No acute toxicity data for aquatic invertebrates are available for tungstic acid (target substance). However, acute aquatic invertebrate toxicity data are available for WO3 and sodium tungstate (source substances), which were evaluated for read-across. Tungstic acid (WO3•H2O) is the hydrated form of tungsten trioxide (WO3). Based on Annex V, hydrates and water free (anhydrous) forms of compounds can be regarded as the same substance for registration purposes. Therefore, tungstic acid will be considered equivalent to WO3. For more details on the rationale for read-across to WO3 and sodium tungstate refer to the read-across category approach document (Annex 3).
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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