Elements by DOT Hazard Class

The DOT hazard class indicates the category of danger posed by a material during transportation. Each class is identified by a number and name, displayed on placards affixed to transport vehicles. The system covers nine primary classes, including explosives, gases, flammable liquids, and radioactive materials.

Data available for 65 of 118 elements. Most common: 4.1 (28 elements).

Visualize DOT Hazard Class in the periodic table →

118 elements

Elements by DOT Hazard Class
		Symbol
1	Hydrogen	H	2.1
2	Helium	He	2.2
7	Nitrogen	N	2.2
8	Oxygen	O	2.2
10	Neon	Ne	2.2
18	Argon	Ar	2.2
36	Krypton	Kr	2.2
54	Xenon	Xe	2.2
9	Fluorine	F	2.3
12	Magnesium	Mg	4.1
14	Silicon	Si	4.1
15	Phosphorus	P	4.1
21	Scandium	Sc	4.1
23	Vanadium	V	4.1
24	Chromium	Cr	4.1
25	Manganese	Mn	4.1
26	Iron	Fe	4.1
27	Cobalt	Co	4.1
28	Nickel	Ni	4.1
29	Copper	Cu	4.1
32	Germanium	Ge	4.1
39	Yttrium	Y	4.1
42	Molybdenum	Mo	4.1
44	Ruthenium	Ru	4.1
45	Rhodium	Rh	4.1
49	Indium	In	4.1
57	Lanthanum	La	4.1
58	Cerium	Ce	4.1
62	Samarium	Sm	4.1
67	Holmium	Ho	4.1
69	Thulium	Tm	4.1
71	Lutetium	Lu	4.1
73	Tantalum	Ta	4.1
74	Tungsten	W	4.1
76	Osmium	Os	4.1
77	Iridium	Ir	4.1
78	Platinum	Pt	4.1
6	Carbon	C	4.2
20	Calcium	Ca	4.2
22	Titanium	Ti	4.2
38	Strontium	Sr	4.2
40	Zirconium	Zr	4.2
46	Palladium	Pd	4.2
72	Hafnium	Hf	4.2
3	Lithium	Li	4.3
11	Sodium	Na	4.3
13	Aluminum	Al	4.3
19	Potassium	K	4.3
30	Zinc	Zn	4.3
37	Rubidium	Rb	4.3
55	Cesium	Cs	4.3
56	Barium	Ba	4.3
4	Beryllium	Be	6.1
33	Arsenic	As	6.1
34	Selenium	Se	6.1
48	Cadmium	Cd	6.1
52	Tellurium	Te	6.1
83	Bismuth	Bi	6.1
86	Radon	Rn	7
90	Thorium	Th	7
92	Uranium	U	7
31	Gallium	Ga	8
35	Bromine	Br	8
53	Iodine	I	8
80	Mercury	Hg	8
5	Boron	B	—
16	Sulfur	S	—
17	Chlorine	Cl	—
41	Niobium	Nb	—
43	Technetium	Tc	—
47	Silver	Ag	—
50	Tin	Sn	—
51	Antimony	Sb	—
59	Praseodymium	Pr	—
60	Neodymium	Nd	—
61	Promethium	Pm	—
63	Europium	Eu	—
64	Gadolinium	Gd	—
65	Terbium	Tb	—
66	Dysprosium	Dy	—
68	Erbium	Er	—
70	Ytterbium	Yb	—
75	Rhenium	Re	—
79	Gold	Au	—
81	Thallium	Tl	—
82	Lead	Pb	—
84	Polonium	Po	—
85	Astatine	At	—
87	Francium	Fr	—
88	Radium	Ra	—
89	Actinium	Ac	—
91	Protactinium	Pa	—
93	Neptunium	Np	—
94	Plutonium	Pu	—
95	Americium	Am	—
96	Curium	Cm	—
97	Berkelium	Bk	—
98	Californium	Cf	—
99	Einsteinium	Es	—
100	Fermium	Fm	—
101	Mendelevium	Md	—
102	Nobelium	No	—
103	Lawrencium	Lr	—
104	Rutherfordium	Rf	—
105	Dubnium	Db	—
106	Seaborgium	Sg	—
107	Bohrium	Bh	—
108	Hassium	Hs	—
109	Meitnerium	Mt	—
110	Darmstadtium	Ds	—
111	Roentgenium	Rg	—
112	Copernicium	Cn	—
113	Nihonium	Nh	—
114	Flerovium	Fl	—
115	Moscovium	Mc	—
116	Livermorium	Lv	—
117	Tennessine	Ts	—
118	Oganesson	Og	—

Elements by DOT Hazard Class

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