undefined of all the elements in the Periodic Table

The United States Department of Transportation (DOT) identifies hazard class of all dangerous elements/goods/commodities either by its class (or division) number or name. The DOT has divided these materials into nine different categories, known as Hazard Classes.

DOT Hazardous Classes

The following list explains the nine DOT hazmat classes in more detail.

DOT Hazardous Classes	Category
Class 1	Explosives
Class 2	Gases
Class 3	Flammable Liquids
Class 4	Flammable Solids
Class 5	Oxidizers
Class 6	Toxic substances and Infectious
Class 7	Radioactive material
Class 8	Corrosives
Class 9	Miscellaneous dangerous substances and articles

Hazard Class 1: Explosives

All explosive materials fall under Hazard Class 1

Division	Detail
1.1	Explosives which have a mass explosion hazard
1.2	Explosives which have a projection hazard but not a mass explosion hazard
1.3	Explosives which have a fire hazard and either a minor blast hazard or a minor projection hazard or both, but not a mass explosion hazard
1.4	Explosives which present no significant blast hazard
1.5	Very insensitive explosives with a mass explosion hazard
1.6	Extremely insensitive articles which do not have a mass explosion hazard

Hazard Class 2: Gases

They can be divided into three categories:

Division	Detail
2.1	Flammable gases
2.2	Non-flammable, non-toxic gases
2.3	Toxic gases

Hazard Class 3: Flammable Liquids

These can be divided into three categories:

Division	Detail
3.1	Flammable liquids with a flashpoint below 0°F
3.2	Flammable liquids with a flashpoint between 0°F and 73°F
3.3	Flammable liquids with a flashpoint between 73°F and 141°F

Hazard Class 4: Flammable Solids

there are three main divisions in this category:

4.1 Flammable solids, such as match sticks 4.2 Spontaneously combustible substances 4.3 Substances that can combust while wet

Division	Detail
4.1	Flammable solids, self-reactive substances and solid desensitized explosives
4.2	Substances liable to spontaneous combustion
4.3	Substances which in contact with water emit flammable gases

Hazard Class 5: Oxidizing Substances

Hazard class 5 primarily consist of oxidizing substances and organic peroxides. These goods are materials that are not combustible themselves but can cause or contribute to the combustion of other substances.These include:

Division	Detail
5.1	Oxidizing substances
5.2	Organic peroxides

Hazard Class 6: Toxic and Infectious Substances

Hazard class 6 is divided into two main classes:

Division	Detail
6.1	Toxic substances
6.2	Infectious substances

This table gives the of all the elements of periodic table . Click on 'Element Atomic Number', 'Element Symbol', 'Element Name' and 'Element ' headers to sort.