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項目Item 分析純
（AR）
含量Assay,% 99.5-100.5
pH(50g/L溶液，25℃） 5.8-6.4
澄清度試驗Clarity 合格
水不溶物Insoluble matter in water,% ≤ 0.01
灼燒殘渣（以硫酸鹽計）Ignition residue,% ≤ 0.01
氯化物(Cl)Chloride,% ≤ 0.001
硫酸鹽(SO4)Sulfate,% ≤ 0.001
銨(NH4)Ammonium,% ≤ 0.002
鐵(Fe)Iron,% ≤ 0.0005
品級Grade 藥典級
(Ph. Eur., BP, USP, 99-101%)
含量assay(以干基計) 99-101%
可水解物hydrolyzable substances, complies
有機揮發性不純物organic volatile impurities, complies (GC)
殘留溶劑residual solvents, complies
重金屬heavy metals (as Pb) ≤0.001%
茚三酮陽性物質other ninhydrin-positive substances ≤0.5%
灼燒殘渣ign. residue ≤0.1% (as SO4)
干燥損失loss on drying ≤0.2% , 105 °C, 2 h
pH 5.9-6.4 (20 °C, 5%)
pKa (25 °C) 2.35
氯chloride (Cl-): ≤50 ppm
硫酸根sulfate (SO42-): ≤50 ppm
溶液外觀appearance of solution complies
硫酸反應物質reaction against H2SO4 complies
紅外鑒別identity (IR) complies
品級Grade 分子生物學級
(for molecular biology, ≥99.0% (NT))
含量assay ≥99.0% (NT)
DNA酶DNases, none detected
RND酶RNases, none detected
不溶物insoluble matter, passes filter test
磷酸酶phosphatases, none detected
蛋白酶proteases, none detected
灼燒殘渣ign. residue ≤0.05% (as SO4)
干燥損失loss on drying ≤0.05% , 20 °C (HV)
pKa (25 °C) 2.35
鹽酸溶解性solubility 1 M HCl: soluble1 M at 20 °C, clear, colorless
氯chloride (Cl-): ≤50 ppm
硫酸根sulfate (SO42-): ≤50 ppm
陽離子cation traces by ICP Atomic emission
Al: ≤5 ppm
As: ≤0.1 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
NH4+: ≤200 ppm
Na: ≤50 ppm
Ni: ≤5 ppm
Pb: ≤5 ppm
Sr: ≤5 ppm
Zn: ≤5 ppm
λ 1 M in 1 M HCl
UV absorption
λ: 260 nm A: ≤0.01
λ: 280 nm A: ≤0.01
品級Grade 電泳級
(for electrophoresis, ≥99%)
外觀Appearance 白色至類白色粉末
純度Purity ≥99.0% (GC)
水溶解試驗solubility in water 2 GM /10 ML WATER, clear
不溶物Insoluble matter ≤0.01%
pKa (25 °C) 2.35
氯chloride (Cl-): ≤70 ppm
重金屬heavy metals (as Pb): ≤20 ppm
UV absorption A280 ≤ 0.15(1 M)
For use in electrode buffers for page complies
In transfer buffers for western blots complies
USP級
ASSAY (NH2CH2COOH) 98.5 - 101.5 %
LOSS ON DRYING -- 0.2 %
RESIDUE ON IGNITION -- 0.1 %
CHLORIDE (Cl) -- 0.007 %
SULFATES (SO4) -- 0.0065 %
HEAVY METALS -- 0.002 %
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