Ammonium alginates

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CAS: 9005-34-9 Definition: Ammonium alginate is the ammonium salt of alginic acid. Chemical Formula: (C 6 H 11 NO 6 ) n Use function: Stabilizer, thickener, gelling agent, emulsifier Solubility: Dissolves slowly in water forming a viscous solution; insoluble in ethanol, and ether Specification: Purity Loss on drying Not more than 15% (105°, 4h) Water-insoluble matter Not more than 2% on the dried basis See description under TESTS. Sulfated ash Not more than 7% on the dried basis Arsenic Not more than 3 mg/kg (Method II) Lead Not more than 5 mg/kg Prepare a sample solution as directed for organic compounds in the Limit Test, using 5 m g of lead ion (Pb) in the control Microbiological criteria Total plate count: Not more than 5,000 colonies per gram. Initially prepare a 10 -1 dilution by adding a 50 g sample to 450 ml of Butterfield's phosphate buffered dilution water and homogenizing in a high speed blender. Yeasts and moulds: Not more than 500 colonies per gram Coliforms: Negative by test Salmonella: Negative by test

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