Hydrogen Gas	A	A	A	B	A	A	A	A	A	A	A
Hydrogen Peroxide-3%	A	B	B	B	A	A	A	D	A	A	A
Hydrogen Peroxide-10%	B	C	C	B	A	A	A	B	A	A	A
Hydrogen Peroxide-30%		D	C	B	A	A	A	D	B	A	A
Hydrogen Peroxide-90%		B	D	C	A	A	A	D	A		A
Hydrogen Sulfide (Wet) (Cold)	A	B	C	A	A	A	D	D	A	A	A
Hydrogen Sulfide (Wet) (Hot)	A	C	D	A	B	A	D	D	A	A	A
Hydrogen Sulfide Aqueous Solution	A	B	C	A	D	A	D	D	A	A	A
Hydroquinone	A	D	C		C	A	A	B	B	A	A
Hydroxyacetic Acid (70%)	A	A	A		A	A	D
Hypochlorous Acid	A	D	D	B	A	A	D	D	D	A	A
Ink	A		A		A		C	D	A
Iodine	A	D	B	D	A	A	D	D	D	A/70	A/150
Iodine Pentaflouride	B	D	D	D	D	A
Idoform	B			A	A	A	B	A	B		A
Isoamyl Acetate		D	D	B	D	A	A	A	A
Isoamyl Alcohol		A	A	A	A	A		A
Isoamyl Butyrate			D		D	A	A	A	A
Isoamyl Chloride		D	D	D	A	A
Isobutyric Acetate		D	D	C	D	A	A	A	A
Isobutyl Alcohol (Isobutanol)		B	B	A	A	A	A	A		A
Isobutyl Amine			D		D	A
Isobutyl Chloride			D		B	A	D	B	B
Isobutyric Acid		B	D	A		A	A
Isododecane		A	B	D	A	A	B	B	B
Isooctane	D	B	A	D	A	A		A		A
Isopentane			A		A	A
Isophorone	B	D	D	C	D	A	A	B	A
Isopropyl Amine	B		D		D	A		A	A
Isopropyl Acetate	B	D	D	B	D	A	C	A	B
Isopropyl Alcohol		A	B	B	A	A	A	A	A	A
Isopropyl Chloride	C	D	D	D	B	A	D	A	A	D
Isopropyl Ether	C	D	B	D	D	A	A	A	A	D/72
Isotane			A		A		A			D/72
Jet Fuel (JP3, JP4, JP5)	C	D	A	D	A	A	A	A	A	D	A
Kerosene	C	B	A	D	A	A	A	A	A	D/72	A
Ketones	C	D	D	B	D	A	B	A	A	D	A/70
Lacquers	D	D	D	D	D	A	A	C	A	D	D
Lacquer Solvents	D	D	D	D	D	A	A	B	A	C	D
Lactic Acid	A	C	B	B	A	A	C		A	A	A/70
Lactol (Aliphatic Naphtha Solvent)		D	C		A	A	A	A	A
Lard	B	B	A	C	A	A	A	A	A	A
Latex	A	B	A		A	A	A		A
Laurel Alcohol	A		A		B	A	A	A	A
Lavender Oil	B	C	B	C	B	A
Lead Acetate	A	B	B	A	D	A	D	A	B	A	A
Lead Chloride		B				A	D		B
Lead Nitrate		A	B	A	A	A	D	B	B	A
Lead Sulfamate	A	A	B	A	A	A				A
Lemon Oil	C	C			A	A	A		A