Anhydrous Citric Acid - Molecular formula: C6H8O7  Molecular   weight: 192.13 Specifications: Item                   BP93         USP24          GB1998 Appearance                White crystal   White crystal         / Identification test       Coincidence     Coincidence        Coincidence Solubility                Coincidence     Coincidence           / Clarity & color & luster  Clear           Coincidence        Clear Heavy metal(Pb)           0ppm            0.001%             0.0005% As                          /             3ppm               0.0001% Ca                        200ppm            /                0.02% Oxalate S                 Coincidence     0.01% Easy carbonized matter    Coincidence     Coincidence   no darker than standard Sulfate                   150ppm          Coincidence        0.015% Ba                        Coincidence       /                Coincidence Fe                        50ppm             /                0.001% Cl                        50ppm             /                0.005% Vitriol Ash               0.1%            0.05%              0.1% Organic volatile matter     /            Coincidence           / Moisture                  0.1%            0.5%               0.5% Content                   99.5-101.0%     99.5-100.5%        99.5%-101% Color & luster               /              /                Coincidence Whiteness value              /              /                Coincidence Graininess                   /              /                Coincidence Mechanical impurity          /             /                Coincidence Inner Mongolia IHJU Chemical Imp.& Exp.co.,Ltp Nanchafang ST.Jia NO.2 Yuquan Dis.Hohhot,Inner Mongolia,china. Email:info@chinatrona.com Tel:0086-0471- 5967253/5967247/5967244 022-66297448/25288742 Fax:0086-0471-5967242 　　022-66297449