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Abstract
The official U.S.P. assay for sodium nitrite which employs standard permanganate and standard oxalate solutions is compared with a new method using standard ceric sulfate solution. The proposed method is shown to be more accurate than the official method by comparison of the results with the absolute purity of the sodium nitrite determined by phase solubility analysis. The official N.F. XI method for sodium nitrite tablets involving determination of chloride produced by reduction of potassium chlorate is shown to give unacceptable precision.
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