Registration Dossier
Registration Dossier
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: 231-890-0 | CAS number: 7775-14-6
Explosiveness
Administrative data
Link to relevant study record(s)
- Endpoint:
- explosive properties of explosives
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2010-07-14 to 2010-07-23
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.14 (Explosive properties)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- other: Recommandations on the Transport of Dangerous Goods: Manual of tests and Criteria, 4th edition, New York and Geneva, 2003: Class 1, Test series: 1(b)/2(b), 3(a) (ii) and 3(b) (i)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- other: OECD 113 (1981) Screening test for thermal stability and stability in air
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Parameter:
- sensitiveness to impact: impact energy (J)
- Remarks on result:
- negative (not further specified)
- Parameter:
- sensitiveness to friction: friction load (N)
- Remarks on result:
- negative (not further specified)
- Parameter:
- other: Explosive (not specified)
- Remarks on result:
- negative (not further specified)
- Remarks:
- No explosion was observed.
- Interpretation of results:
- non explosive
- Conclusions:
- The decomposition energy of sodium dithionite in the DSC was > 500 J/g, therefore the main test had to be performed.
The test item has no explosive properties according to EC 440/2008, Part a, A.14..
Reference
The test item contains a residual moisture of 0.2 wt-% which was determined by drying the test item under reduced pressure (approximately 100 mbar) at a temperature of 50 °C.
Thermal stability:
The decomposition energy of sodium dithionite in the DSC was > 500 J/g, therefore the main test had to be performed.
Explosive properties
Mechanical sensitivity: Friction
No explosion was observed within 6 tests using a 360 N loading.
Mechanical sensitivity: Impact
No explosion was observed within 6 testsdropping the 10 kg mass from 0.40 m (40 J).
Thermal sensitivity: Koenen-Test
Due to the fact that the test series with a 2.0 mm diameter orifice plate showed no explosion, the fact that the area of a 6.0 mm orifice is an order of magnitude higher and the physical state of the test item (solid) which excludes an enrichment of test item due to the evaporation of solvent an explosion can also be excluded for the 6.0 mm diameter orifice plate.
Description of key information
Explosive properties of sodium dithionite (experimental results, according to EC 440/2008, Part A, A.14): non explosive substance
Key value for chemical safety assessment
- Explosiveness:
- non explosive
Additional information
For evaluation of this endpoint, data from an experimental study are used as key information. The study was conducted according to GLP and according to EU method A.14. Therefore, the test data are reliable without restrictions.
The decomposition energy of sodium dithionite in the DSC analysis was > 500 J/g, therefore the main test had to be performed. Results from the main test indicate that the test item has no explosive properties according to EC 440/2008, Part a, A.14..
Justification for classification or non-classification
The test item had no explosive properties according to EC 440/2008, Part A, A.14. Therefore the substance does not require classification as explosive according to Regulation (EC) No 1272/2008.
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.
