GB/T 6685-86
項目Item 優級純 分析純
(GR) (AR)
含量(NH2OH.HCl)Assay,% ≥ 99.0 98.5
水溶液反應Water solution reaction 合格 合格
澄清度試驗Clarity 合格 合格
灼燒殘渣(以硫酸鹽計)Ignition residue,% ≥ 0.01 0.01
硫酸鹽(SO4)Sulfate,% ≥ 0.002 0.002
銨鹽(NH4) Ammonium,% ≥ 0.1 0.1
鐵(Fe)Iron,% ≥ 0.0003 0.0003
砷(As)Arsenic,% ≥ 0.0005 --
重金屬(以Pb計)Heavy metals,% ≥ 0.0003 0.0003
ACS級
項目名稱 ACS Grade
含量(NH2OH·HCl)Assay ≥96.0%
乙醇溶解試驗Solubility in alcohol Passes test
灼燒殘渣Residue after ignition ≤0.05%
可滴定酸Titrable acid ≤0.25meq/g
銨(NH4)Ammonium Passes test
硫酸鹽
和亞硫酸鹽(SO4)Sulfate and sulfite ≤0.005%
鐵(Fe)Iron(Fe) ≤5ppm
重金屬(以Pb計)Heavy metals(as Pb) ≤5ppm
99.99% metals basis:
外觀Appearance White Crystals
紅外光譜Infrared spectrum Conforms to Structure
滴定純度紅外光譜鑒別Infrared spectrometry Conforms to Structure
純度Purity ≥99.99% Based on Trace Metals Impurities
純度Purity by Titration by KMNO4 98.5 - 101.5 %
灼燒殘渣Residue on Ignition ≤0.05 %
溶液澄清度Clarity of Solution Pass
鐵Iron (Fe) ≤5 ppm
重金屬Heavy Metal (as Lead) ≤5 ppm
銨鹽Ammonium Pass
硫化物Sulfur compounds ≤0.005 %
可滴定酸Titratable acid ≤0.25 MEQ/g
痕量金屬分析Trace Metal Analysis ≤100.0 ppm by ICP Atomic emission
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