Ascorbic Acid (VC)

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Ascorbic Acid (VC)
Posting date : May 05, 2014
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28-
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Product description(http://www.sonefworld.com/product/ascorbic-acid-_44.html): Email:sonefchem@heartask.com Characteristics White crystals or crystalline powder Identification Positive Reaction Melting Point 190-192 °C PH 2.2~2.5 Clarity of Solution clear Color of Solution ≤BY7 Specific Optical Rotation +20.5~+21.5° Copper ≤ 5 ppm Heavy metals ≤ 10 ppm Iron ≤ 2 ppm Oxalic Acid ≤ 0.2 % Sulphated Ash ≤ 0.1 % Residue on Ignition ≤0.1 % Organic Volatile Impurities Pass USP Test Assay 99.0~100.0% Loss on drying ≤ 0.4 % Lead ≤2 ppm Mercury ≤1 ppm Storage: Kept in a light-proof,well-closed ,dry and cool place

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