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Description
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Colorless crystals, or white, crystalline powder
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Solubility
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Hydrous form very soluble in boiling water. Freely soluble in water; insoluble in alcohol.
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Identification
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-
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Identification 'A'
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Sodium : Passes the general test for sodium
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Identification 'B'
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Citrate : Passes the general test for citrate
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Identification 'C'
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Upon ignition, it should yields an alkaline residue that effervesces when treated with 3 N hydrochloric acid
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Assay
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99.0% - 100.5% (on anhydrous basis)
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Tartrates
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No crystalline precipitate should be formed
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Specific tests
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-
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Alkalinity
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No pink colour should be produced by 1 drop pf phenolphthalein TS
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Loss on drying (180°C; 18 hrs)
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10.0 to 13.0 %
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