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含量(NaHCO3)Assay,% ≥99.8 99.8 99.8
水溶液反應(yīng)water Solution
reaction 合格 合格 合格
澄清度試驗Clarity 合格 合格 合格
水不溶物Insiluble matter in water,% ≤0.005 0.01 0.02
氯化物及氯酸鹽(以Cl計)
Chloride and chlorate,% ≤0.001 0.002 0.005
硫化合物(以SO4計)Sulur
compounds,% ≤0.002 0.005 0.01
氮化合物(N)Nitrogen,% ≤0.0005 0.001 0.002
磷酸鹽(以PO4計)Phosphate,% ≤0.001 0.002 0.005
硅酸鹽(以SiO3計)Silicate,% ≤0.001 0.005 0.01
鎂(Mg)Magnesium,% ≤0.002 0.003 0.005
鉀(K）Potassium,%　 ≤0.005 0.01 0.02
鋁(Al)Aluminum,% ≤0.005 0.01 0.02
鈣(Ca)Calcium,% ≤0.005 0.007 0.001
鐵(Fe)Iron,% ≤0.0005 0.001 0.002
重金屬(以Pb計)Heavy metals,% ≤0.0005 0.001 0.002
還原碘物質(zhì)(以HCOOH計) ≤0.005 -- --
Substances reducing iodine

ACS級
項目名稱　 ACS Grade
含量(NaHCO3)Assay 99.7-100.3%
水不溶物Insoluble matter ≤0.015%
總氮量(以Cl計)Total chlorine ≤0.003%
磷酸鹽(PO4)Phosphate ≤0.003%
銨(NH4)Ammonium ≤5ppm
重金屬(以Pb計)Heavy metals ≤5ppm
鐵(Fe)Iron ≤0.001%
鈣(Ca)Calcium ≤0.02%
鎂(Mg)Magnesium ≤0.005%
鉀(K)Potassium ≤0.005%

品級Grade 色譜純
(for HPLC，≥99.0%)
含量assay(calc. based on dry substance) ≥99.0% (T)
pKa (25 °C) (1) 6.37, (2) 10.25 (carbonic acid)
水溶解試驗solubility in water 無色透明，0.1 g/mL
λ ≥10 % in H2O
紫外吸光值UV absorption
λ: 240 nm A: ≤0.1
λ: 250 nm A: ≤0.04
λ: 260 nm A: ≤0.02
λ: 280 nm A: ≤0.01
λ: 500 nm A: ≤0.01
RP gradient test Pass

品級Grade 分子生物學(xué)
(for molecular biology, 99.7-100.3%)
外觀Appearance 白色粉末
紅外光譜鑒別Infrared spectrometry Conforms
純度Purity 99.8 - 100.2% (T)
水溶解試驗solubility in water 合格,10g/100ml水
硫化合物Sulfur compounds ≤ 0.003% (AS SULFATE)
重金屬Heavy metals ≤ 5 PPM (AS LEAD)
鐵Iron(Fe) ≤ 0.001%
鉀Potassium(K) ≤ 0.005%
DNASE, RNASE AND PROTEASE NONE DETECTED