2.11.2. Classification criteria
2.11.2.1. A substance or mixture shall be classified as a self-heating substance or mixture of this class, if in the tests performed in accordance with the test method given in the ►M4 UN RTDG ◄ , Manual of Tests and Criteria, Part III, sub-section 33.3.1.6:
a positive result is obtained using a 25 mm cube sample at 140 oC;
a positive result is obtained in a test using a 100 mm sample cube at 140 oC and a negative result is obtained in a test using a 100 mm cube sample at 120 oC and the substance or mixture is to be packed in packages with a volume of more than 3 m3;
a positive result is obtained in a test using a 100 mm sample cube at 140 oC and a negative result is obtained in a test using a 100 mm cube sample at 100 oC and the substance or mixture is to be packed in packages with a volume of more than 450 litres;
a positive result is obtained in a test using a 100 mm sample cube at 140 oC and a positive result is obtained in a test using a 100 mm cube sample at 100 oC.
2.11.2.2. A self-heating substance or mixture shall be classified in one of the two categories for this class if, in a test performed in accordance with test method N.4 in Part III, sub-section 33.3.1.6 of the ►M4 UN RTDG ◄ , Manual of Tests and Criteria, the result meets the criteria according to Table 2.11.1:
Table 2.11.1
Criteria for self-heating substances and mixtures
|
Category |
Criteria |
|
1 |
A positive result is obtained in a test using a 25 mm sample cube at 140 oC |
|
2 |
(a) a positive result is obtained in a test using a 100 mm sample cube at 140 oC and a negative result is obtained in a test using a 25 mm cube sample at 140 oC and the substance or mixture is to be packed in packages with a volume of more than 3 m3; or (b) a positive result is obtained in a test using a 100 mm sample cube at 140 oC and a negative result is obtained in a test using a 25 mm cube sample at 140 oC, a positive result is obtained in a test using a 100 mm cube sample at 120 oC and the substance or mixture is to be packed in packages with a volume of more than 450 litres; or (c) a positive result is obtained in a test using a 100 mm sample cube at 140 oC and a negative result is obtained in a test using a 25 mm cube sample at 140 oC and a positive result is obtained in a test using a 100 mm cube sample at 100 oC. |