GHS Classification Guidance for the Japanese Government

pathological examination and this can often reveal hazards that may not be life-threatening
but could indicate functional impairment. Consequently all available evidence, and
relevance to human health, must be taken into consideration in the classification process.
Examples of relevant toxic effects in humans and/or animals are provided
below:
(a) Morbidity resulting from single exposure;
(b) Significant functional changes, more than transient in nature, in the respiratory
system, central or peripheral nervous systems, other organs or other organ systems,
including signs of central nervous system depression and effects on special senses
(e.g. sight, hearing and sense of smell);
(c) Any consistent and significant adverse change in clinical biochemistry, haematology,
or urinalysis parameters;
(d) Significant organ damage that may be noted at necropsy and/or subsequently seen or
confirmed at microscopic examination;
(e) Multifocal or diffuse necrosis, fibrosis or granuloma formation in vital organs with
regenerative capacity;
(f) Morphological changes that are potentially reversible but provide clear evidence of
marked organ dysfunction;
(g) Evidence of appreciable cell death (including cell degeneration and reduced cell
number) in vital organs incapable of regeneration.
Hazards listed below are treated separately in the UN GHS second revised edition and
hence are not included in specific target organ toxicity.
- Acute Toxicity (3-2-1)
- Skin Corrosion/Irritation (3-2-2)
- Serious Eye Damage/Eye Irritation (3-2-3)
- Respiratory or Skin Sensitization (3-2-4)
- Germ Cell Mutagenicity (3-2-5)
- Carcinogenicity (3-2-6)
- Reproductive Toxicity (3-2-7)
- Aspiration Hazard (3-2-10)
(4)Guidance for classification and judgment
A) Background of this item and points to be noted
As for background of this item, refer to Part 1, Introduction.
In classification, take the following points into account.
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