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磷酸铁、磷酸铝不溶于醋酸,难溶于低浓度的硝酸。磷酸钙、磷酸镁、磷酸锰则溶于醋酸和低浓
Iron phosphate, aluminum phosphate insoluble in acetic acid, insoluble in low concentrations of nitric acid. Calcium phosphate, magnesium phosphate, manganese phosphate is soluble in acetic acid and low concentration