2.4. Oxidising gases
2.4. Oxidising gases
Oxidising gas means any gas or gas mixture which may, generally by providing oxygen, cause or contribute to the combustion of other material more than air does.
2.4.2. Classification criteria
2.4.2.1. An oxidising gas shall be classified in a single category for this class in accordance with Table 2.4.1.:
2.4.2.1. An oxidising gas shall be classified in a single category for this class in accordance with Table 2.4.1.:
Table 2.4.1
Criteria for oxidising gases
|
Category |
Criteria |
|
1 |
Any gas which may, generally by providing oxygen, cause or contribute to the combustion of other material more than air does. |
Note:
‘Gases which cause or contribute to the combustion of other material more than air does’ means pure gases or gas mixtures with an oxidising power greater than 23,5 % as determined by a method specified in ISO 10156 as amended.
2.4.3. Hazard Communication
Label elements shall be used for substances or mixtures meeting the criteria for classification in this hazard class in accordance with Table 2.4.2.
Table 2.4.2
Label elements for oxidising gases
|
Classification |
Category 1 |
|
GHS Pictogram |
|
|
Signal Word |
Danger |
|
Hazard Statement |
H270: May cause or intensify fire; oxidiser |
|
Precautionary Statement Prevention |
P220 P244 |
|
Precautionary Statement Response |
P370 + P376 |
|
Precautionary Statement Storage |
P403 |
|
Precautionary Statement Disposal |
|
2.4.4. Additional Classification Considerations
To classify an oxidising gas, tests or calculation methods as described in ISO 10156 as amended, “Gases and gas mixtures — Determination of fire potential and oxidising ability for the selection of cylinder valve outlet” shall be performed.