Properties : Sodium nitrite should contain not less than 90 per cent, of NaNO2. It occurs as white, or nearly white, opaque, fused masses or pencils, or colorless, transparent crystals which are odorless and have a mild saline taste. It is freely soluble in water (1 :1.1) and very slightly soluble in alcohol.

Incompatibilities: It is incompatible with oxidizing agents generally. It must be protected from contact with the air on account of its tendency to oxidation.

Action and Uses: Sodium nitrite has the characteristic properties of the nitrites, and resembles nitroglycerin in its action, though its effect is manifested more slowly and is somewhat more lasting.

Dosage: 0.065 gm. or 1 grain. It should be administered in solution.