Chemical Compatibility Chart

Municipal Environmental Laboratory

Office of Research and Development

U.S. Environmental Protection Agency

Cincinnati, Ohio 45268

No.	Reactivity Group Name
1	Acids, Mineral, Non-oxidizing	1												Legend Code Consequences H Heat Generation F Fire G Innocuous and non-flammable gas generation GT Toxic Gas formation GF Flammable Gas formation E Explosion P Violent Polymerization S Solubilization of toxic substance U May be hazardous, but Unknown
2	Acids, Mineral, Oxidizing		2
3	Acids, Organic		G H	3
4	Alcohols and Glycols	H	H F	H P	4
5	Aldehydes	H P	H F	H P		5
6	Amides	H	H GT				6
7	Amines, Aliphatic and Aromatic	H	H GT	H		H		7
8	Azo Compounds, Diazo Compounds and Hydrazines	H G	H GT	H G	H G	H			8
9	Carbamates	H G	H GT						G H	9
10	Caustics	H	H	H		H				H G	10
11	Cyanides	GT GF	GT GF	GT GF					G			11
12	Dithiocarbamates	H,F GF	H,F GF	H,GT GF		GF GT		U	H G				12
13	Esters	H	H F						H G		H			13
14	Ethers	H	H F												14
15	Fluorides, Inorganic	GT	GT	GT												15
16	Hydrocarbons, Aromatic		H F														16
17	Halogenated Organics	H GT	H,F GT					H GT	H G		H GF	H						17
18	Isocyanates	H G	H,F GT	H G	H P			H P	H G		H,P G	H G	U						18
19	Ketones	H	H F						H G		H	H								19
20	Mercaptans and Other Organic Sulfides	GT GF	H,F GT						H G									H	H	H	20
21	Metals, Alkali and Alkaline Earth, Elemental	H,F GF	H,F GF	H,F GF	H,F GF	H,F GF	GF H	GF H	GF H	GF H	GF H	GF H	GF,H GT	GF H				H E	GF H	GF H	GF H	21
22	Metals, Other Elemental & Alloys as Powders, Vapors, or Sponges	H,F GF	H,F GF	G F					H,F GT	U	GF H							H E	GF H		H,F GF		22
23	Metals, Other Elemental & Alloys as Sheets, Rods, Drops, etc.	H,F GF	H,F GF						H,F G									H F						23
24	Metals and Metal Compounds, Toxic	S	S	S			S	S			S														24
25	Nitrides	GF HF	H,F E	H GF	H,E GF	GF H			U	H G	U	GF H	GF H	GF H				GF H	U	GF H	GF H	E				25
26	Nitriles	H,GT GF	H,F GT	H							U											H P			S	GF H	26
27	Nitro Compounds, Organic		H,F GT			H					H E											H,E GF				H,E GF		27
28	Hydrocarbons, Aliphatic, Unsaturated	H	H F			H																	H E						28
29	Hydrocarbons, Aliphatic, Saturated		H F																											29
30	Peroxides and Hydroperoxides, Organic	H G	H E		H F	H G		H GT	H,F E	H,F GT		H,E GT	H,F GT					H E	H	E	H,F GT	H E	H G		H G	H,E GF	H,P GT		H P	‚	30
31	Phenols and Cresols	H	H F						H G										H P			GF H				GF H					H	31
32	Organophosphates, Phosphothioates, Phosphodithioates	H GT	H GT						U		H E											H									U		32
33	Sulfides, Inorganic	GT GF	HF GF	GT		H			E										H												H GT			33
34	Epoxides	H P	H P	H P	H P	U		H P	H P		H P	H P	U								H P	H P	H P		H P	H P					H P	H P	U	H P	34
101	Combustible and Flammable Materials, Miscellaneous	H G	H,F GT																			H,F G				H,F GF					H,F GT					101
102	Explosives	H E	H E	H E					H E		H E			H E								H E	H E	H E	E	E					H E	H E		H E	H E	H E	102
103	Polymerizable Compounds	P H	P H	P H					P H		P H	P H	U									P H	P H	P H	P H	P H					P H	P H		P H			H E	103
104	Oxidizing Agents, Strong	H GT		H GT	H F	H F	H,F GT	H,F GT	H E	H,F GT		H,E GT	H,F GT	H F	H F		H F	H GT	H,F GT	H F	H,F GT	H,F E	H,F E	H F		H,F E	H,F GT	H E	H F	H F	H G	H F	H,F GT	H,F GT	H,F G	H,F G	H E	H,F GT	104
105	Reducing Agents, Strong	H GF	H,F GT	H GF	H,F GF	H,F GF	H GF	H G				H GT	H F				H,F E	H E	H GF	H GF	H GF						H GF	H E			H E	H GF	H,GT GF		H	H GF	H E	H,P GF	H,F E	105
106	Water and Mixtures Containing Water	H	H						G										H G			H GF	H GF		S	H GF								GT GF						GF GT	106
107	Water Reactive Substances	<---------EXTREMELY REACTIVE!!!! DO NOT MIX WITH ANY CHEMICAL OR WASTE MATERIAL!!!! EXTREMELY REACTIVE!!!!-------------->																																								107
		1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31	32	33	34	101	102	103	104	105	106	107

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