GB 190 stipulates symbols (including marking and labeling) of dangerous goods, including 4 marks and 26 labels which respectively indicate the main properties of 9 classes of dangerous goods.

This Standard replaces its previous version GB 190-1990 and was modified according to UN Recommendations on Transport of Dangerous Goods Part 5: Consignment Procedures Chapter 5.2: Marking and Labeling (Rev.15^th).

Compared with its previous version GB 190-1990, this Standard made the following main changes:

• Increased the number of labels of explosives from 3 to 4;

• Increased the number of labels of gases from 3 to 5

• Increased the number of labels of inflammable liquid from 1 to 2;

• Increased the number of labels of Class 4 substances from 3 to 4

• Labels of organic peroxides have changed a lot among all Class 5 substances;

• Decreased the number of labels of toxic substances from 3 to 1;

• Added the label of fissile substances among Class 7 substances;

• Added 4 markings;

• Added requirements for use of markings and labeling (Appendix A)

Technical Committee: National Technical Committee 251 on Dangerous Chemicals Management of Standardization Administration of China (SAC/TC 251)