Registration Dossier
Registration Dossier
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EC number: 232-146-8 | CAS number: 7789-18-6
Oxidising properties
Administrative data
Link to relevant study record(s)
Description of key information
The test item cesium nitrate has to be classified as oxidizing according to the UN "Manual of Tests and Criteria", ST/SG/AC.10/11/Rev.5, 2009, 34.4.1, test method O.1.
It has been assigned to the Division 5.1 "Oxidizing Substances", Packing Group PG I.
Key value for chemical safety assessment
- Oxidising properties:
- yes
Additional information
Key-study:
Tests on oxidizing properties of the sample cesium nitrate were performed according to the UN test method O.1. The lowest mean burning rate of 7.8 s was obtained with the mixture ratio sample to cellulose (4:1). This rate was less than the mean burning time of 12.6 s of a 3:2 mixture, by mass, of potassium bromate and cellulose. Therefore the substance met the classification criteria of Division 5.1, PG I and cesium nitrate has to be classified as oxidizing.
Supporting study:
Test on oxidizing properties of cesium nitrate was performed according to the EU Method A.17. The highest burning rate of 4.76 mm/s was obtained with the mixture of 80 % test item: 20 % cellulose. This rate was obviously higher than the highest rate of the reference mixtures (3.63 mm/s). With regard to all test results the test item is assessed to have oxidizing properties.
Justification for classification or non-classification
Based on the results of the "oxidising properties" test , the test item cesium nitrate is classified according to Regulation (EC) No 1272/2008 (CLP) in Cat.1; H271: May cause fire or explosion, strong oxidiser and according Directive 67/548/EEC (DSD) in O; R9: Explosive when mixed with combustible material.
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