Registration Dossier
Registration Dossier
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EC number: 231-197-3 | CAS number: 7446-11-9
Skin irritation / corrosion
Administrative data
- Endpoint:
- skin corrosion: in vitro / ex vivo
- Remarks:
- waiver
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- the study does not need to be conducted because the substance is a strong acid (pH ≤ 2.0) or base (pH ≥ 11.5) and the available information indicates that it should be classified as skin corrosion (Category 1, 1A, 1B or 1C)
- Justification for type of information:
- Sulphur trioxide is the anhydride of sulphuric acid. Moisture from physiological conditions will promote acid formation and rapid dissociatipon to protons and the sulphate ion. This is potenitally corrosive to skin.
Data source
Materials and methods
Results and discussion
Applicant's summary and conclusion
- Interpretation of results:
- Category 1A (corrosive) based on GHS criteria
- Conclusions:
- Sulphur trioxide is the anhydride of sulphuric acid. Moisture from physiological conditions will promote acid formation and rapid dissociatipon to protons and the sulphate ion. This is potenitally corrosive to skin.
- Executive summary:
Sulphur trioxide is classified as corrosive. Sulphur trioxide is the anhydride of sulphuric acid. Moisture from physiological conditions will promote acid formation and rapid dissociatipon to protons and the sulphate ion. This is likely corrosive to skin. Testing is not scientifically defendable or humane with strong acid generator.
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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