GB 20592-2006 safety rules for classification, precautionary labeling and precautionary statements of chemicals -acute toxicity

This is one of China's 26 classification standards in accordance with GHS. The classification criteria for acute toxicity(gases) is based on UN GHS 1st Edition(2003) and this criteria is different from EU CLP regulation or UN GHS 3rd revised version. The major difference is listed as below:

GB 20592-2006: Acute toxicity for gas,category 4, 2500ppm < LC50 < 5000ppm;
CLP or UN-GHS 2009: Acute toxicity for gas,category 4, 2500ppm < LC50 < 20,000ppm;

The standard has been replaced by
GB 30000.2-29-2013 Safety rules for classification and labelling of chemicals

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