Registration Dossier
Registration Dossier
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EC number: 234-842-7 | CAS number: 12036-22-5
Carcinogenicity
Administrative data
Description of key information
According to Column 2 of REACH Annex X, a carcinogenicity study may be required if the substance has a widespread dispersive use or there is evidence of frequent or long-term human exposure and the substance is classified as mutagen category 3 or there is evidence from the repeated dose study(ies) that the substance is able to induce hyperplasia and/or pre-neoplastic lesions. Based on the available data, tungsten dioxide would not be classify as a mutagen. No hyperplasia and/or pre-neoplastic lesions were identified in a 28-day repeated dose inhalation toxicity study on tungsten oxide (also known as tungsten blue oxide or TBO), which will be used for read-across. Therefore, a carcinogenicity study is not required for the registration under REACH.
Key value for chemical safety assessment
Carcinogenicity: via oral route
Link to relevant study records
- Endpoint:
- carcinogenicity: oral
- Data waiving:
- other justification
- Justification for data waiving:
- other:
Reference
Endpoint conclusion
- Endpoint conclusion:
- no study available
Carcinogenicity: via inhalation route
Link to relevant study records
- Endpoint:
- carcinogenicity: oral
- Data waiving:
- other justification
- Justification for data waiving:
- other:
Reference
Endpoint conclusion
- Endpoint conclusion:
- no study available
Carcinogenicity: via dermal route
Link to relevant study records
- Endpoint:
- carcinogenicity: oral
- Data waiving:
- other justification
- Justification for data waiving:
- other:
Reference
Endpoint conclusion
- Endpoint conclusion:
- no study available
Justification for classification or non-classification
No carcinogenicity data are available for tungsten dioxide. Therefore, classification cannot be made due to lack of data.
Additional information
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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