Quality Standard: 純度Purity ( 以干基計(jì)) >99.0% (Titrimetry)
外觀Appearance 白色結(jié)晶粉末
紅外光譜鑒別Infrared spectrometry 符合
干燥損失Loss on drying <3 % (105°C, 16 小時(shí))
重金屬Heavy metals (as Pb) <20 ppm
痕量分析Trace analysis :
砷As measure < 3 ppm
硫酸根SO4 measure < 50 ppm
氯Cl measure < 50 ppm
鐵Fe measure < 5 ppm
硫酸根PO4 measure < 100 ppm
草酸根C2O4 measure < 100 ppm
還原物Reducing substances <1 % (as dextrose)
品級(jí)Grade 藥用USP級(jí)
(USP)
鑒別實(shí)驗(yàn)IDENTITY PASS
干燥損失LOSS ON DRYING ≤ 3.0%
氯離子CHLORIDE ≤ 0.07%
硫酸根SULFATE ≤ 0.05%
砷ARSENIC ≤ 3 PPM (METHOD I)
重金屬HEAVY METALS ≤ 0.002% (METHOD II)
還原性物質(zhì)REDUCING SUBSTANCES ≤ 1.0%
殘?jiān)軇㏑ESIDUAL SOLVENTS MEETS THE REQUIREMENTS
含量ASSAY 98.0% ~ 102.0% (DRY BASIS)