Sodium Chloride CAS 7647-14-5

Product name: Sodium Chloride Molecular Formula: ClNa Molecular Weight: 58.443 CAS No.: 7647-14-5 Description Sodium Chloride occurs as a transparent to opaque, white crystalline solid of variable particle size. Sodium Chloride remains dry in air at a relative humidity below 75%, but becomes deliquescent at higher humidity. One gram is soluble in 2.8 mL of water at 25°, in 2.7 mL of boiling water, and in about 10 mL of glycerin. Sodium Chlo ride containing water-insoluble anticaking, free-flowing, and conditioning agents may produce cloudy solutions or may dissolve incompletely. A 1:20 aqueous solution usually has a pH between 5.5 and 8.5 (the pH may be higher if alkaline conditioning agents have been added). Application Sodium chloride is widely distributed in nature. Oceans are the vast source of sodium chloride. It is an essential component of most food preparation, imparting flavor to food and providing the sodium nutritional requirement. Also, it is used for preserving food. The most important applications in the chemical industry are in making a number of important industrial chemicals such as hydrochloric acid, sodium hydroxide, sodium carbonate, and metallic sodium. It is the starting material in manufacturing these substances. Other uses are in dyeing and printing fabrics, glazing pottery, in making soap, and for curing hides. Sodium chloride is a component of many freezing mixtures. Specification Appearance White crystalline powder. Aluminum Not more than 0.2ppm Arsenic Not more than 1ppm Barium The solution are equally clear after standing for 2h Ferro cyanides No blue colour develops with 10min Iodides The substance show no blue colour Iron Not more than 2ppm Bromides Not more than 100ppm Phosphates Not more than 25ppm Potassium Not more than 500ppm Magnesium and alkaline-earth metals Not more than 100ppm (as Ca) Nitrites The absorbance is not more than 0.01 Sulphates Not more than 200ppm Appearance of Solution Clear and colourless Acidity or alkalinity Complies Bacterial endotoxins Not more than 200ppm Loss on drying Not more than 0.5%(105 ℃, 2h) Assay 99.0 ~ 100.5% (on the dried basis) Packing 25kg/ bag or as customer’s requirements. Storage Store in tight container, in a dry and cool place.

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