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This standard covers sodium chloride in the form of rock, vacuum-granulated, compressed vacuum-granulated, solar, or compressed solar salt for use in the recharging of cation-exchange materials in water supply service for softening municipal and industrial water supplies. Additionally, sodium chloride is used in the recharging of anion-exchange materials for nitrate removal or dealkalization of municipal and industrial supplies. The purpose of this standard is to provide purchasers, manufacturers, and suppliers with the minimum requirements for sodium chloride, including physical, chemical, packaging, shipping, and testing requirements. Topics covered include: physical requirements; chemical requirements; impurities; verification; inspection; sampling; test procedures - general; moisture; insoluble matter; calcium; magnesium; sulfate; grease, fat, and oil; pH value; total impurities; sodium chloride assay; rejection; and, delivery.
