| 质量标准： |
项目Item 分析纯 化学纯
(AR) (CP)
含量(H3BO3)Assay,% ≥ 99.5 99.0
澄清度试验Clarity 合格 合格
水不溶物Insoluble matter in water ≤ 0.005 0.02
乙醇溶解度试验Solubility in ethanol 合格 合格
甲醇不挥发物(以硫酸计)Novolatile with methanol,% ≤ 0.05 0.3
氯化物(Cl)Chloride,% ≤ 0.0005 0.002
硫酸盐(SO4)Sulfate,% ≤ 0.002 0.01
磷酸盐(PO4)Phosphate,% ≤ 0.0005 0.003
钙(Ca)Calcium,% ≤ 0.002 0.01
铁(Fe)Iron,% ≤ 0.0005 0.002
砷(As)Arsenic,% ≤ 0.0001 0.0005
铅(Pb)Lead,% ≤ 0.001 0.003
项目 优级纯
(GR)
澄清度试验Clarity 合格
钙(Ca)Calcium ≤0.002%
含量Assay ≥99.8%
甲醇不挥发物Novolatile with methanol ≤0.05%
磷酸盐Phosphate ≤0.0005%
硫酸盐Sulfate ≤0.0005%
氯化物Chloride ≤0.0003%
镁magnesium ≤0.0005%
砷(As)Arsenic ≤0.00001%
水不溶物Insoluble matter in water ≤0.005%
铁(Fe)Iron ≤0.0001%
乙醇溶解试验Solubility in ethanol 合格
重金属Heavy metals ≤0.0005%
ACS级
项目名称Item ACS Grade
含量Assay ≥99.5%
不溶物Insoluble matter ≤0.005%
甲醇不挥发物Novolatile with methanol ≤0.05%
氯化物(Cl)Chloride(Cl) ≤0.001%
磷酸盐(PO4)Phosphate ≤0.001%
硫酸(SO4)Sulfate ≤0.01%
重金属(以Pb计)Heavy metals(as Pb) ≤0.001%
铁(Fe)Iron(Fe) ≤0.001%
钙(Ca)Calcium(Ca) ≤0.005%
品级Grade 分子生物学级
(for molecular biology，≥99.5% (T) )
含量assay ≥99.5% (T)
DNases, none detected
RNases, none detected
insoluble matter, passes filter test
phosphatases, none detected
proteases, none detected
non-volatile substances in MeOH/HCl <0.05%
干燥损失loss on drying ≤0.5% , 20 °C (HV)
pH 3.6-4.4 (25 °C, saturated solution in H2O)
水溶性solubility H2O: soluble1 M, clear, colorless (hot)
氯chloride (Cl-): ≤5 ppm
磷酸根phosphate (PO43-): ≤5 ppm
硫酸根sulfate (SO42-): ≤5 ppm
Al: ≤5 ppm
As: ≤0.5 ppm
Ba: ≤5 ppm
Bi: ≤5 ppm
Ca: ≤10 ppm
Cd: ≤5 ppm
Co: ≤5 ppm
Cr: ≤5 ppm
Cu: ≤5 ppm
Fe: ≤5 ppm
K: ≤50 ppm
Li: ≤5 ppm
Mg: ≤5 ppm
Mn: ≤5 ppm
Mo: ≤5 ppm
Na: ≤50 ppm
Ni: ≤5 ppm
Pb: ≤5 ppm
Sr: ≤5 ppm
Zn: ≤5 ppm
λ 1 M in H2O
UV absorption
λ: 260 nm A: ≤0.015
λ: 280 nm A: ≤0.010
品级Grade 电泳级
(for electrophoresis, ≥99.5%)
外观Appearance 白色至类白色粉末
水溶解试验solubility in water Colorless Clear ，1 g plus 25 ml, H2O
甲醇不溶物Insoluble matter in MeOH ≤0.005 %
非挥发物Nonvolatile Matter with MeOH ≤0.05 %
氯Chloride ≤0.001 %
磷酸盐Phosphate (PO4) ≤0.001 %
硫酸盐Sulfate (SO4) ≤0.01 %
钙Calcium (Ca) ≤0.005 %
重金属Heavy Metals (as Lead) ≤0.001 %
铁Iron (Fe) ≤0.001 %
含量Assay(% H3BO3) ≥99.5 %
电泳实验electrophoresis test pass
品级Grade 细胞培养与植物细胞培养级
(for cell culture and plant cell culture , ≥99.5%)
外观Appearance 白色粉末
水溶解试验solubility in water Clear Colorless，40 mg/ml, H2O
纯度Purity ≥99.5 % (Titration by NaOH)
植物细胞培养测试Plant Cell Culture Test Pass
细胞培养测试Cell Culture Test Pass
99.999%：
外观Appearance 白色粉末
X-射线衍射分析X-Ray Diffraction Conforms to standard
纯度Purity ≥99.999% Based On Trace Metals Analysis
ICP Assay Confirms Boron component
总金属杂质Total metallic impurities 20ppm by ICP Atomic emission
(Li、K、Sc、Cu、Fe)
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