useful pH range 6.0 - 7.2 pKa (25 °C) 6.6 (Free acid)
外观Appearance White crystalline powder 红外光谱鉴别Infrared spectrometry Conforms 纯度Purity ≥98.0% (T) 干燥失重drying loss ≤0.5% 重金属Heavy Metals (as Pb) <5PPM
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