質(zhì)量標(biāo)準(zhǔn): GB/T 698-77
項(xiàng)目Item 分析純 化學(xué)純
(AR) (CP)
含量(H2NNH2.H2SO4)Assay,% ≥99.0 98.0
澄清度試驗(yàn)Clarity 合格 合格
水不溶物Insoluble matter in water,% ≤0.002 0.005
灼燒殘?jiān)?以硫酸鹽計(jì))Ignition residue,% ≤0.05 0.1
氯化物(Cl)Chloride,% ≤0.002 0.005
鐵(Fe)Iron,% ≤0.0005 0.001
重金屬(以Pb計(jì))Heavy metals,% ≤0.0005 0.001
ACS級(jí)
項(xiàng)目名稱Item ACS Grade
含量[(NH2)2·H2SO2]Assay ≥99.0%
水不溶物Insoluble matter ≤0.005%
灼燒殘?jiān)黂esidue after ignition ≤0.05%
氯化物(Cl)Chloride ≤0.005%
重金屬(以Pb計(jì))Heavy metals ≤0.002%
鐵(Fe)Iron(Fe) ≤0.001%