硫酸铵,7783-20-2,Ammonium sulfate GB/T 1396-93 项目Item 分析纯 化学纯 (AR) (CP) 含量[(NH42SO4)Assay,% ≥99.0 99.0 pH(50g/L溶液,25℃) 4.8-6.0 4.8-6.0 澄清度试验Clarity 合格 合格 水不溶物Insoluble matter in water,% ≤0.002 0.01 灼烧残渣(以硫酸盐计)Ignition residue,% ≤0.01 0.5 氯化物(Cl)Chloride,% ≤0.0005 0.001 硝酸盐(NO3)Nitrate,% ≤0.001 0.005 磷酸盐(PO4)Phosphate,% ≤0.0005 0.002 钙(Ca)Calcium,% ≤0.005 -- 铁(Fe)Iron,% ≤0.0002 0.0005 砷(As)Arsenic,% ≤0.00002 0.0002 重金属(以Pb计)Heavy metals,% ≤0.0005 0.002 品级Grade 优级纯 (GR) 含量assay ≥99.5% (T) 不溶物insoluble matter, passes filter test 灼烧残渣Residue on ignition ≤0.01% (as SO4) 干燥失重loss on drying ≤0.1% , 110 °C pH 5.0-6.0 (25 °C, 1 M in H2O) 水溶性solubility H2O: soluble1 M at 20 °C, clear, colorless 氯chloride (Cl-): ≤5 ppm 硝酸根nitrate (NO3-): ≤10 ppm 硫酸根phosphate (PO43-): ≤5 ppm 阳离子cation traces Al: ≤5 ppm As: ≤0.2 ppm Ba: ≤5 ppm Bi: ≤5 ppm Ca: ≤10 ppm Cd: ≤1 ppm Co: ≤5 ppm Cr: ≤5 ppm Cu: ≤2 ppm Fe: ≤2 ppm K: ≤50 ppm Li: ≤5 ppm Mg: ≤5 ppm Mn: ≤5 ppm Mo: ≤5 ppm Na: ≤50 ppm Ni: ≤5 ppm Pb: ≤2 ppm Sr: ≤5 ppm Zn: ≤1 ppm λ 1 M in H2O UV absorption λ: 260 nm A: ≤0.037 λ: 280 nm A: ≤0.030 硫酸铵,7783-20-2,Ammonium sulfate ACS级 项目名称Item ACS Grade 含量Assay ≥99.0% pH(5%溶液,25.0℃)pH 5.0-6.0 不溶物Insoluble matter ≤0.005 灼烧残渣Residue after ignition ≤0.005% 氯化物(Cl)Chloride(Cl) ≤5ppm 硝酸盐(NO3)Nitrate ≤0.001% 磷酸盐(PO4)Phosphate ≤5ppm 重金属(以Pb计)Heavy metals(as Pb) ≤5ppm 铁(Fe)Iron(Fe) ≤5ppm 品级Grade 用于分子生物学 (for molecular biology, ≥99.0%) 外观Appearance 白色粉末 红外光谱鉴别Infrared spectrometry Conforms 含量assay ≥99.0%(中和滴定) 水溶解试验solubility in water CLEAR ,2G/3ML WATER 不溶物Insoluble matter ≤0.005% 氯chloride (Cl-): ≤5 ppm 铜Cu: ≤5 ppm 铁Fe: ≤5 ppm 锌Zn: ≤5 ppm 重金属heavy metals (as Pb): ≤2 ppm UV ABSORBANCE,1 M SOLUTION A1M/260 ≤0.03 A1M/280 ≤0.025 DNase, RNase, and protease none detected 品级Grade 用于植物细胞培养 (plant cell culture tested, ≥99.0%) 外观Appearance 白色粉末 红外光谱鉴别Infrared spectrometry Conforms 含量assay ≥99.0%(中和滴定) 水溶解试验solubility in water CLEAR ,2G/3ML WATER 不溶物Insoluble matter ≤0.005% 氯chloride (Cl-): ≤5 ppm 铜Cu: ≤5 ppm 铁Fe: ≤5 ppm 锌Zn: ≤5 ppm 重金属heavy metals (as Pb): ≤2 ppm 植物细胞培养Plant cell culture test PASSES ≥99.99% metals basis: 外观Appearance 白色结晶 X-射线衍射分析X-Ray Diffraction Conforms to standard 纯度Purity ≥99.99% Based on Trace Metals Impurities of ICP ICP assay confirms sulfur component. 痕量金属分析Trace Metal Analysis ≤100ppm by ICP Atomic emission 灼烧残渣residue on ignition ≤0.005% 不溶物insoluble matter ≤0.005% (c=10%, H2O) 氯chloride ≤5 ppm 铁iron ≤5 ppm 重金属heavy metals ≤5 ppm (as pb) 硝酸根nitrate ≤0.001% pH 5.0 - 6.0 , 25 °C (c=5%, H2O) 磷酸盐phosphate ≤5 ppm ≥99.999% metals basis: 外观Appearance 白色结晶或结晶粉末 X-射线衍射分析X-Ray Diffraction Conforms to standard 红外光谱鉴别Infrared spectrometry Conforms to Structure 纯度Purity ≥99.999% Based on Trace Metals Impurities of ICP S 23,7 - 24,9 % (Gravimetric Analysis With Barium Chloride) SO4 71,2 - 74,2 % (Gravimetric Analysis With Barium Chloride) 痕量金属分析Trace Metal Analysis ≤20ppm by ICP Atomic emission (Ca、Cr、Fe、Mg、Na) |