Naphta

ok

ok

ok

-

ok

no

ok*

-

Naphtalene

-

ok

ok

-

-

-

-

-

Naphtaline

ok

-

ok*

-

ok

ok*

ok*

-

Natural Gas

-

ok

ok

-

ok

-

-

-

Nickel Acetate

-

ok

-

-

-

-

-

-

Nickel Chloride

-

ok

-

-

-

-

-

-

Nickel Nitrate

-

ok

-

-

-

-

-

-

Nickel Sulphate

-

ok

-

-

-

-

-

-

Nicotine

-

ok*

-

-

-

-

-

-

Nicotinic Acid

-

ok

-

-

-

-

-

-

Nitric Acid

ok

ok*

no

ok*

no

ok*

ok

-

Nitrobenzene

ok*

ok*

-

-

-

-

-

-

Nitroethane

-

ok*

-

-

-

-

-

-

Nitrogen

-

ok

ok*

-

-

-

-

-

Nitrogen Dioxide

-

ok

-

-

-

-

-

-

Nitroglycerin

-

ok

-

-

-

-

-

-

Nitromethane

ok*

ok

-

-

-

-

-

-

Nitrotoluene

-

ok

-

-

-

-

-

-

Nitrous Oxide

no

no

-

-

-

-

-

-