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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 233-162-8 | CAS number: 10049-04-4
Oxidising properties
Administrative data
Link to relevant study record(s)
- Endpoint:
- oxidising liquids
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- other:
- Justification for type of information:
- The substance as registered is always generated in situ as a gas dissolved in water, with concentration not exceeding 2%. Water is acting as a stabilizing agent against explosive/oxidizing properties and no physical hazard is anticipated for the substance as registered. However, based on the potential hazard if off-gassing, available data on the pure gaseous substance were discussed in this dossier.
- Endpoint:
- oxidising gases
- Type of information:
- not specified
- Adequacy of study:
- other information
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- secondary literature
- Remarks:
- The information does not come from a test report, and the minimum fields required cannot be filled in. Data comes from a sheet with no reference to data sources, and therefore cannot be assigned as reliable.
- Reason / purpose for cross-reference:
- reference to same study
- Principles of method if other than guideline:
- No data.
- Parameter:
- other: Not combustible but enhances combustion of other substances. Reacts violently with organics, causing fire and explosion hazard.
- Remarks on result:
- not measured/tested
- Executive summary:
The ICSC provides information relating to explosive potential of the substance Chlorine dioxide if contact with organic materials.
- Endpoint:
- oxidising gases
- Type of information:
- not specified
- Adequacy of study:
- other information
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- secondary literature
- Remarks:
- The information does not come from a test report, and the minimum fields required cannot be filled in. Data comes from an online compilation using secondary data sources, and therefore cannot be assigned as reliable. However, please note that the endpoint is cited in the database as peer reviewed.
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to other study
- Principles of method if other than guideline:
- No data.
- Parameter:
- other: The HSDB database provides information, from several sources, relating to oxidising properties of the gaseous substance Chlorine dioxide, in particular explosive potential if contact with organic materials.
- Remarks on result:
- not measured/tested
- Executive summary:
The HSDB database provides information, from several sources, relating to oxising properties of the substance Chlorine dioxide, in particular explosive potential if contact with organic materials.
Referenceopen allclose all
Not combustible but enhances combustion of other substances.
Reacts violently with organics, causing fire and explosion hazard.
Explodes when heated or by reaction with organics. [1]
Reacts violently with organic materials. [2]
Incompatible with other combustible materials, organic matters, and solvents. [3]
The gas and liquid are violently decomposed by organic materials. The gas will decompose at temperatures below the boiling point of water. [4]
Description of key information
Solution of chlorine dioxine generated in-situ at less than 2% in water (as registered): not considered to be oxidising, but potential hazard if off-gassing.
Key value for chemical safety assessment
- Oxidising properties:
- no
Additional information
The properties of gaseous chlorine dioxide are discussed because, although the substance as registered is in-situ generated aqueous solution, under certain conditions off-gassing may occur.
Two literature data warn about risk of violent reaction if gas in contact with organics. However, high content of water is anticipated to inhibit any combustion with end-use solution.
Partial pressure of ClO2 over the solution, and therefore potential hazard, is a function of concentration and temperature (please refer to point 4.6).
Justification for classification or non-classification
For chlorine dioxide gas, a harmonised classification is already included in Regulation (EC) No.1272/2008, Annex VI Part 3, with Ox. Gas 1, H270: May cause or intensify fire; oxidiser.
For chlorine dioxide in aqueous solution, no physical hazard is established in the harmonised entry.
It is unnecessary to perform a further test to confirm this classification.
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.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
