ActionA - little or none, B - moderate, C - strong, S - unknown

Natural rubber

Buna-N (NBR)

EPDM

Hypalon

Naphta

C

S

C

C

Naphtalene

C

C

C

C

Naphthene

C

C

C

C

Natural Gas

B

A

B

B

Natural Gas(Dry)

B

A

B

A

Natural Gas(Wet)

B

A

B

A

Nickel Chloride

A

A

A

A

Nickel Hydroxide

B

S

A

A

Nickel Nitrate

A

A

A

A

Nickel Sulphate

A

A

A

A

Nicotine Bentonite

C

B

C

C

Nicotine Sulphate

A

A

A

A

Nitric Acid 10%

C

C

A

A

Nitric Acid 2 %

C

C

A

A

Nitric Acid 25%

C

C

B

A

Nitric Acid 40%

C

C

B

A

Nitric Acid 60%

C

C

C

B

Nitric Acid 70%

C

C

C

C

Nitric Acid (Fuming)

C

C

C

C

Nitro Benzen

C

C

C

C

Nitro Glycerine

C

C

C

C

Nitrosyl-Chloride

C

C

C

C

Nitrous Acid

C

C

A

A

Nitro-Ethane

C

C

C

C

Nitro-Methane

C

C

C

C

Nitro-Octane

C

C

C

C

Nitro-Propene

C

C

C

C