Category of danger

If a chemical is hazardous it is first classified into an appropriate category of danger to assist in the provision of the correct information and packaging. 

Category of danger Indication of danger Symbol Symbol letter... 

The instability of nitrogenous molecules with weak bonds will first be considered, then the dangerous oxidation-reduction reactions. Then, all the reactions which cannot be classified under the two main categories of dangerous reactions will be gathered together. 

Table 4. Categories of danger for EU classification of dangerous chemicals...

DSD terminology, e.g., preparation, dangerous, category of danger, risk phrase, safety phrase UN CHS terminology, i.e., mixture, hazardous, hazard class, hazard statement, precautionary statement... 

DSD categories of danger plus additional labelling elements, e.g., R1 ( explosive when dry ) UN CHS hazard classes plus supplemental labelling elements taken over from DSD e.g., EUHOOl ( explosive when dry )... 

If harmonised classification then normally for all categories of danger If harmonised classification then for substances which are carcinogenic, mutagenic, toxic to reproduction or respiratory sensitisers other effects on a case-by-case basis... 

Classification Precise identification of the hazard of a chemical by assigning a category of danger and a risk phrase using set criteria. 

Category of danger A description of hazard type from Schedule 1, e.g. explosive, corrosive... 

Classification The identiffcation of the chemical hazard by assigning a category of danger from Schedule 1 and risk phrases from the APLG... 

Dangerous substance A substance listed in the APLG or, if not listed, one which is in one or more of the categories of danger specified in Schedule 1... 

---