GHS Classification Guidance for the Japanese Government
GHS Classification Guidance for the Japanese Government GHS Classification Guidance for the Japanese Government
2-3-9 Pyrophoric Liquids (1)Definitions Definitions of pyrophoric liquids in UN GHS are as follows, and they are adopted in this guidance. 【GHS 2 nd revised edition】(2.9.1) A pyrophoric liquid is a liquid which, even in small quantities, is liable to ignite within five minutes after coming into contact with air. (2)Classification criteria in GHS 【GHS 2 nd revised edition】(2.9.2) A pyrophoric liquid is classified in a single category for this class using test N.3 in Part III , sub-section 33.3.1.5 of the UN Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria, according to the following table: Table 2.9.1: Criteria for pyrophoric liquids Category Criteria 1 The liquid ignites within 5 min when added to an inert carrier and exposed (3) Guidance for Classification A) Judgment of Not applicable to air, or it ignites or chars a filter paper on contact with air within 5 min. Substances and mixtures that are gases and solids shall be judged as “Not applicable”. B) Judgment of Not Classified If it is confirmed based on the information of prescribed review documents that a substance to be assessed does not self-ignite on contact with air of ambient temperature, fill in “Classification result” with “Not classified”, and fill in “Classification Grounds” with “Do not self-ignite in contact with air of ambient temperature”. Example entry: In the class of “Pyrophoric Liquids”, “Not classified” (Do not self-ignite in contact with air of ambient temperature.) Reliable ignition point data can be used as dependable judgment criteria. Note: If it is confirmed based on the information of prescribed review documents that the ignition point of a substance exceed about 70°C, the substance can be classified as “Not classified”. Reference: UN GHS second revised edition 2.9.4.2 and 2.10.4.2 C) Classification based on TDG Classification If the name of a substance is included in TDG classification, the substance shall be 62
classified according to it. If not, it falls under “Classification not possible” in principle. However, if it is confirmed that a substance to be assessed does not self-ignite on contact with air of ambient temperature, the substance can be classified as “Not classified”. (4)Data availability Few data have been published. (5)Comparison with conventional classification systems The definition of Pyrophoric Liquids in GHS2.9.1 is identical with that of UNRTDG2.4.3.2.2. In addition, as stated in 2.4.3.3.1, the Packing Group for it is defined as “I”. In EmS, Pyrophoric Liquids, along with Solid described in 2-3-10, are classified into Schedule S-M (Pyrophoric Hazards) or S-L (Pyrophoric substances and water-reactive substances). In ERG, they are included in Schedule 135 and 136 (Pyrophoric substances), but are not distinguished from Self-heating Substances and Mixtures described in 2-3-11. (6)Sources of information for classification results under conventional systems It is judged that Class 1 is identical with UNRTDG4.2 I (Liquids). These substances may also have the property of “Substances and mixtures which, in contact with water, emit flammable gasesZ” mentioned in 2-3-12. (Example)UNRTDG4.2 І 1366 DIETHYLZINC 1370 DIMETHYLZINC 1380 PENTABORANE 2445 LITHIUM ALKYLS 4.2 4.3 2870 ALUMINIUM BOROHYDRIDE ALUMINIUM BOROHYDRIDE IN DEVICES 3053 MAGNESIUM ALKYLS 3076 ALUMINIUM ALKYL HYDRIDES 3254 TRIBUTYLPHOSPHANE 3255 tert-BUTYL HYPOCHLORITE 63
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2-3-9 Pyrophoric Liquids<br />
(1)Definitions<br />
Definitions of pyrophoric liquids in UN <strong>GHS</strong> are as follows, and <strong>the</strong>y are adopted in this<br />
guidance.<br />
【<strong>GHS</strong> 2 nd revised edition】(2.9.1)<br />
A pyrophoric liquid is a liquid which, even in small quantities, is liable to ignite within five<br />
minutes after coming into contact with air.<br />
(2)<strong>Classification</strong> criteria in <strong>GHS</strong><br />
【<strong>GHS</strong> 2 nd revised edition】(2.9.2)<br />
A pyrophoric liquid is classified in a single category <strong>for</strong> this class using test N.3 in Part III ,<br />
sub-section 33.3.1.5 of <strong>the</strong> UN Recommendations on <strong>the</strong> Transport of Dangerous Goods, Manual<br />
of Tests and Criteria, according to <strong>the</strong> following table:<br />
Table 2.9.1: Criteria <strong>for</strong> pyrophoric liquids<br />
Category Criteria<br />
1 The liquid ignites within 5 min when added to an inert carrier and exposed<br />
(3) <strong>Guidance</strong> <strong>for</strong> <strong>Classification</strong><br />
A) Judgment of Not applicable<br />
to air, or it ignites or chars a filter paper on contact with air within 5 min.<br />
Substances and mixtures that are gases and solids shall be judged as “Not applicable”.<br />
B) Judgment of Not Classified<br />
If it is confirmed based on <strong>the</strong> in<strong>for</strong>mation of prescribed review documents that a<br />
substance to be assessed does not self-ignite on contact with air of ambient temperature, fill<br />
in “<strong>Classification</strong> result” with “Not classified”, and fill in “<strong>Classification</strong> Grounds” with<br />
“Do not self-ignite in contact with air of ambient temperature”.<br />
Example entry: In <strong>the</strong> class of “Pyrophoric Liquids”, “Not classified” (Do not self-ignite<br />
in contact with air of ambient temperature.)<br />
Reliable ignition point data can be used as dependable judgment criteria.<br />
Note: If it is confirmed based on <strong>the</strong> in<strong>for</strong>mation of prescribed review documents that <strong>the</strong><br />
ignition point of a substance exceed about 70°C, <strong>the</strong> substance can be classified as “Not<br />
classified”.<br />
Reference: UN <strong>GHS</strong> second revised edition 2.9.4.2 and 2.10.4.2<br />
C) <strong>Classification</strong> based on TDG <strong>Classification</strong><br />
If <strong>the</strong> name of a substance is included in TDG classification, <strong>the</strong> substance shall be<br />
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