Quality Standard: 項(xiàng)目Item 分析純
(AR)
含量(CaHPO4·2H2O)Assay,% ≥ 99.0
鹽酸不溶物lnsoluble in hydrochloric acid,% ≤ 0.005
灼燒失重Ignition residue,% 24~26
氯化物(Cl)Chloride,% ≤ 0.005
硫酸鹽(SO4)Sulfate,% ≤ 0.02
硝酸鹽(NO3)Nitrate 合格
氨(NH3)Ammonia,% ≤ 0.01
鎂(Mg)Magnesium,% ≤ 0.02
鐵(Fe)Iron,% ≤ 0.0015
重金屬(以Pb計(jì))Heavy metals,% ≤ 0.001
砷(As)Arsenic,% ≤ 0.001
品級(jí)Grade 藥用級(jí)
(Ph. Eur., BP, USP)
含量assay 98-102.5%
重金屬heavy metals (as Pb) ≤0.003%
鹽酸不溶物insoluble in HCl ≤0.1%
灼燒損失loss on ignition 24.5-26.5% , 800 °C
氯chloride (Cl-): ≤200 ppm
氟fluoride (F-): ≤40 ppm
硫酸鹽sulfate (SO42-): ≤3000 ppm
砷As: ≤1 ppm
鋇Ba:, in accordance (Ph Eur)
鋇Ba:, in accordance (USP)
鐵Fe: ≤300 ppm