Vitamin C is a white monoclinic crystal or crystalline powder with melting point on 190℃-192℃，no smell,sour,yellowish with melting standing .The product is easily soluble in water,slightly soluble in ethanol,insoluble in ether,chloroform.The aqueous solution is acidic.5% aqueous solution PH2.1-2.6,the rotation of aqueous solution is 20.5°+21.5.
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