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Min. Order (MOQ)
20 Metric Ton
Tricalcium phosphate; precipitated calcium phosphatecalcium hydroxyapatiteca3(po4)2 formula wt 310.18ca5oh(po4)3 formula wt 502.31ca10(oh)2(po4)6 formula wt 1004.61ins: 341(iii) cas: [7758-87-4]cas: [1306-06-5cas: [62974-97-4] descriptioncalcium phosphate, tribasic, occurs as a white powder that is stable in air. It consists of a variable mixture of calcium phosphates. It is insoluble in alcohol and almost insoluble in water, but it dissolves readily in dilute hydrochloric and nitric acids. Function: ant caking agent; buffer; nutrient; clouding agent. Requirementsidentificationa. Add ammonium molybdate ts to a warm solution of sample in a slight excess of nitric acid. A yellow precipitate forms. B. Dissolve about 100 mg of sample by warming it with 5 ml of 2.7 n hydrochloric acid and 5 ml of water; while shaking, add 1 ml of 6 n ammonium hydroxide, drop-wise and then add 5 ml of ammonium oxalate ts. A white precipitate forms. Assay: not less than 34.0% and not more than 40.0% of calcium (ca).Arsenic: not more than 3 mgkg.Fluoride: not more than 0.0075%.Lead: not more than 2 mgkg.Loss on ignition: not more than 10.0% tribasic calcium phosphate usp tribasic calcium phosphateca5(oh)(po4)3 502.31calcium hydroxide phosphate (ca5(oh)(po4)3).Calcium hydroxide phosphate (ca5(oh)(po4)3) [12167-74-7]. tribasic calcium phosphate consists of a variable mixture of calcium phosphates having the approximate composition 10cao3p2o5h2o. It contains not less than 34.0 percent and not more than 40.0 percent of calcium (ca). identificationa: to a warm solution in a slight excess of nitric acid add ammonium molybdate ts: a yellow precipitate is formed. B: it responds to the flame test for calcium. Loss on ignition ignite it at 800 for 30 minutes: it loses not more than 8.0% of its weight.
Upington, South Africa
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