Corrigendum - REACH24H Consulting Group

Copyright@United Nations, 2011. All rights reserved.
(ii) have a flammable range with air of at least 12 percentage points regardless of the
lower flammable limit. Flammability shall be determined by tests or by calculation
in accordance with methods adopted by ISO (see ISO 10156:2010). Where
insufficient data are available to use these methods, tests by a comparable method
recognized by a national competent authority may be used;
(b) Division 2.2 Non-flammable, non-toxic gases
Gases which:
(i) are asphyxiant - gases which dilute or replace the oxygen normally in the
atmosphere; or
(ii) are oxidizing - gases which may, generally by providing oxygen, cause or contribute
to the combustion of other material more than air does; or
(iii) do not come under the other divisions;
NOTE: In 2.2.2.1 (b) (ii), “gases which cause or contribute to the combustion of
other material more than air does” means pure gases or gas mixtures with an oxidizing
power greater than 23.5% as determined by a method specified in ISO 10156:2010.
(c) Division 2.3 Toxic gases
Gases which:
(i) are known to be so toxic or corrosive to humans as to pose a hazard to health; or
(ii) are presumed to be toxic or corrosive to humans because they have an LC50 value
(as defined in 2.6.2.1) equal to or less than 5 000 ml/m 3 (ppm).
NOTE: Gases meeting the above criteria owing to their corrosivity are to be
classified as toxic with a subsidiary corrosive risk.
2.2.2.2 Gases and gas mixtures with hazards associated with more than one division take the following
precedence:
(a) Division 2.3 takes precedence over all other divisions;
(b) Division 2.1 takes precedence over Division 2.2.
2.2.2.3 Gases of Division 2.2 are not subject to these Regulations if they are transported at a pressure of
less than 200 kPa at 20 °C and are not liquefied or refrigerated liquefied gases.
2.2.2.4 Gases of Division 2.2 are not subject to these Regulations when contained in the following:
- Foodstuffs, including carbonated beverages (except UN 1950);
- Balls intended for use in sports;
- Tyres (except for air transport); or
- Light bulbs provided they are packaged so that the projectile effects of any rupture of the
bulb will be contained within the package.
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