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Reference
Endpoint:
oxidising solids
Type of information:
experimental study
Adequacy of study:
key study
Study period:
15 April 2010- 06 July 2010
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
other: United Nations (UN), UN no. ST/SG/AC.10/11/Rev.4: Recommendations on the Transport of Dangerous Goods, Part III: Classification Procedures, Test Methods and Criteria Relating to Explosives of Class 3, Class 4, Division 5.1 and Class 9, Test O.1 , 2003.
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Key result
Sample tested:
1:1 sample-to-cellulose ratio
Parameter:
mean burning time
Result:
> 180 s
Key result
Sample tested:
4:1 sample-to-cellulose ratio
Parameter:
mean burning time
Result:
> 180 s

Both the 1:1 and the 4:1 test substance/cellulose mixtures showed a mean burning time > than the burning time of the 3:7 reference substance/cellulose mixture.

Interpretation of results:
GHS criteria not met
Conclusions:
Test O.1 of UN-MTC Section 34 was performed with substance as received (decahydrate, white granules). Both the 1:1 and the 4:1 sample-to-cellulose ratio (by mass) exhibited a mean burning time more than the burning time of a 3:7 mixture (by mass) of potassium bromate and cellulose. Therefore it could be concluded that CN-Nitacal is not an oxidising substance.

Description of key information

UN Test O.1 was performed with substance as received (decahydrate, white granules). Both the 1:1 and the 4:1 sample-to-cellulose ratio (by mass) exhibited a mean burning time more than the burning time of a 3:7 mixture (by mass) of potassium bromate and cellulose. Therefore it could be concluded that CN-Nitacal is not an oxidising substance.

Key value for chemical safety assessment

Oxidising properties:
no

Additional information

UN 1454 (Calcium nitrate) -Special Provisions 34: The commercial grade of calcium nitrate fertilizer, when consisting mainly of a double salt (calcium nitrate and ammonium nitrate) containing not more than 10 percent ammonium nitrate and at least 12 percent water of crystallization, is not subject to the requirements of this subchapter.

Justification for classification or non-classification

Based on UN test results, nitric acid, ammonium calcium salt does not have to be classified according to the CLP Regulation for oxidising properties.

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