GHS Classification Guidance for the Japanese Government

2-3-4 Oxidizing Gases
(1)Definitions
Definitions of oxidizing gases in UN GHS are as follows, and they are adopted in this guidance.
【GHS 2 nd revised edition】(2.4.1)
An oxidizing gas is any gas which may, generally by providing oxygen, cause or contribute to
the combustion of other material more than air does.
(2)Classification criteria in GHS
【GHS 2 nd revised edition】 (2.4.2)
An oxidizing gas is classified in a single category for this class according to the following table:
Table 2.4.1: Criteria for oxidizing gases
Category Criteria
1
A ny gas which may, generally by providing oxygen, cause or contribute to
the combustion of other material more than air does.
NOTE: Artificial air containing up to 23.5% oxygen by volume may be regarded as not oxidizing
for some regulatory purposes (e.g. transport)
(3) Guidance for Classification
A) Judgment of Not applicable
A product which does not meet the GHS definition of gases shall be judged as “Not
applicable”.
B) Classification based on TDG Classification etc
The substance to be evaluated that is listed as a dangerous good (a gas product whose
division number of for its subsidiary hazard is 5.1) in the Dangerous Goods List based on TDG
classification shall belong to “Category 1”.
The following gases described in ISO10156-2 shall also belong to “Category 1”.
Bis-trifluoromethylperoxide C і = 40
Bromine pentafluoride C і = 40
Bromine trifluoride C і = 40
Chlorine C і = 0.7
Chlorine pentafluoride C і = 40
Chlorine trifluoride C і = 40
Fluorine C і = 40
Iodine pentafluoride C і = 40
Nitric oxide C і = 0.6
Nitrogen dioxide C і = 1
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