Registration Dossier
Registration Dossier
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EC number: 231-975-2 | CAS number: 7783-03-1
Water solubility
Administrative data
Link to relevant study record(s)
- Endpoint:
- water solubility
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- data from handbook or collection of data
- Remarks:
- Data from peer-reviewed handbook or collection of data.
- Principles of method if other than guideline:
- Data in this peer-reviewed publication were taken from many sources, including both compilations and primary literature. Where conflicts were found, the value deemed most reliable was chosen for inclusion in the handbook. Reference sources were not provided for this parameter, nor was the experimental method.
- Remarks on result:
- other: Insoluble in water.
- Conclusions:
- Interpretation of results (migrated information): insoluble (< 0.1 mg/L)
Tungstic acid is insoluble in water.
Reference
Description of key information
Tungstic acid is insoluble in water. The most reliable results of water solubility for tungstic acid were obtained from the transformation/dissolution protocol conducted with the anhydrous form of the substance (WO3), which demonstrated a release of 62.43 mg tungsten/L at pH 8.5 and a 100 mg/L loading.
Key value for chemical safety assessment
Additional information
Tungstic acid (WO3.H2O) is the hydrated form of tungsten trioxide (WO3). Based on Annex V, hydrates and water free forms (anhydrous) of compounds shall be regarded as the same substance for registration purposes. Therefore, tungstic acid will be considered equivalent to WO3. For more details, 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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