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EC number: 215-252-9
CAS number: 1315-01-1
The sample does not fulfil the criteria of
the transport class 4.2 "self-heating substances" and therefore can be
excluded from this hazard class. According to the UN "Manual of test &
Criteria", Appendix 6, Screening Procedures, point 5.2, the
classification procedure for self-heating substances need not to be
applied if the results of a screening test can be adequately correlated
with the classification test and an appropriate safety margin is
applied. Point 5.2 (a) refers to the Grewer-oven test (VDI guideline
2263, part 1, 1990). A sample volume of 6 cm3 is tested by linear
heating under air atmosphere. Following the judgement criterion the
execution of the UN test N.4 is only necessary if the onset-temperature
in the Screening test is lower than 220 °C. The testing procedure of the
Grewer-oven test is comparable with the procedure used in the A.16 test.
The A.16 test uses a sample volume of 8 cm3. Therefore the result of the
A.16-test is more conservative in safety terms in comparison with the
Grewer-oven test. Based on the result of the A.16-test the assessment
was performed. The EC-test A.16 showed begin of an exothermic reaction
at about 348 °C. Therefore the prescribed tests following UN test N.4
were not necessary.
The sample does not fulfil the criteria of the transport class 4.2 "self-heating substances" and therefore can be excluded from this hazard class.
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