Registration Dossier
Registration Dossier
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EC number: 231-197-3 | CAS number: 7446-11-9
Flammability
Administrative data
Link to relevant study record(s)
- Endpoint:
- pyrophoric liquids
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- data from handbook or collection of data
- Principles of method if other than guideline:
- Not reported
- Interpretation of results:
- not classified based on GHS criteria
- Conclusions:
- Sulphur trioxide does not meet the criteria as a pyrophoric liquid.
- Executive summary:
Sulphur trioxide does not meet the criteria as a pyrophoric liquid.
Reference
Sulphur trioxide is reported to be non-flammable
Description of key information
Sulphur trioxide itself is non-flammable. However it is known from experience of use that sulphur trioxide can react with substances such as wood or fabrics with sufficient heat of hydration to cause ignition.
Key value for chemical safety assessment
- Flammability:
- non flammable
Additional information
Sulphur trioxide itself is non-flammable. However it is known from experience of use that sulphur trioxide can react with substances such as wood or fabrics with sufficient heat of hydration to cause ignition.
Justification for classification or non-classification
No classification is proposed: the substance is non-flammable.
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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