GHS Classification Guidance for the Japanese Government

oxygen balance = -1600 [2x +(y/2) -z]/molecular weight;
(c) When the organic substance or a homogenous mixture of organic substances contain chemical
groups associated with explosive properties but the exothermic
decomposition energy is less than 500 J/g and the onset of exothermic decomposition to prevent
the procedure being applied to a large number of organic materials which are not explosive but
which will decompose energy may be determined using a suitable calorimetric technique; or
(d) For mixtures of inorganic oxidizing substances with organic material(s), the
concentration of the inorganic oxidizing substance is:
less than 15 % , by mass, if the oxidizing substance is assigned to Category 1 or 2;
less than 30 % , by mass, if the oxidizing substance is assigned to Category 3.
■Self-reactive Substances and Mixtures
【GHS 2 nd revised edition】(2.8.4.2)
The classification procedures for self-reactive substances and mixtures need not be
applied if:
(a) There are no chemical groups present in the molecule associated with explosive or selfreactive
properties; examples of such groups are given in Tables A6.1 and A 6.2 in the A ppendix 6 of the
UN Recommendations on the Transport of Dangerous Goods,
Manual of Tests and Criteria; or
(b) For a single organic substance or a homogeneous mixture of organic substances, the e
exothermic decomposition energy is less than 300 J/g. The onset temperature and decomposition
energy may be estimated using a suitable calorimetric technique (see 20.3.3.3 in Part II of the
UN Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria).
■Flammable Liquids or Solids, Pyrophoric Liquids or Solids, Self-heating Substances and
Mixtures
In the cases where the subsitance is confirmed to be noncombustible based on the information
of the prescribed review document, enter “Not classified” for “Classification result” and
“Non-combustibility” for “Classification Grounds and problems,” with regard to “Flammable
Liquids or Solids”, “Pyrophoric Liquids or Solids”, and “Self-heating Substances and Mixtures”, .
Note:Flame-resistant substances are “not classified” either for those hazard classes, but the
boundary between combustibility and flame-resistance is not clearly defined. Accordingly,
in this classification, only if a substance is confirmed to be noncombustible based on the
prescribed review document, enter "not classified" for “Classification result”.
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