2.10. Pyrophoric solids
2.10. Pyrophoric solids
Pyrophoric solid means a solid substance or mixture which, even in small quantities, is liable to ignite within five minutes after coming into contact with air.
2.10.2. Classification criteria
2.10.2.1. A pyrophoric solid shall be classified in a single category for this class using test N.2 in Part III, sub-section 33.3.1.4 of the
►M4
UN RTDG ◄ , Manual of Tests and Criteria in accordance with Table 2.10.1:
2.10.2.1. A pyrophoric solid shall be classified in a single category for this class using test N.2 in Part III, sub-section 33.3.1.4 of the ►M4 UN RTDG ◄ , Manual of Tests and Criteria in accordance with Table 2.10.1:
Table 2.10.1
Criteria for pyrophoric solids
|
Category |
Criteria |
|
1 |
The solid ignites within 5 minutes of coming into contact with air. |
Note
The test shall be performed on the substance or mixture in its physical form as presented. If, for example, for the purposes of supply or transport, the same chemical is to be presented in a physical form different from that which was tested and which is considered likely to materially alter its performance in a classification test, the substance shall also be tested in the new form.
2.10.3. Hazard Communication
Label elements shall be used for substances or mixtures meeting the criteria for classification in this hazard class in accordance with Table 2.10.2.
Table 2.10.2
Label elements for pyrophoric solids
|
Classification |
Category 1 |
|
GHS Pictogram |
|
|
Signal Word |
Danger |
|
Hazard Statement |
H250: Catches fire spontaneously if exposed to air |
|
Precautionary Statement Prevention |
P210 P222 P231 + P232 P233 P280 |
|
Precautionary Statement Response |
P302 + P335 + P334 P370 +P378 |
|
Precautionary Statement Storage |
|
|
Precautionary Statement Disposal |
|
2.10.4. Additional Classification Considerations
2.10.4.1. The classification procedure for pyrophoric solids need not be applied when experience in manufacture or handling shows that the substance or mixture does not ignite spontaneously on coming into contact with air at normal temperatures (i.e. the substance is known to be stable at room temperature for prolonged periods of time (days)).
2.10.4.1. The classification procedure for pyrophoric solids need not be applied when experience in manufacture or handling shows that the substance or mixture does not ignite spontaneously on coming into contact with air at normal temperatures (i.e. the substance is known to be stable at room temperature for prolonged periods of time (days)).