99%:
外观Appearance 白色结晶性粉末
红外光谱鉴别Infrared spectrometry 符合
纯度Purity >99.0% (TLC)
含量Assay >99.0 % (碘量法)
熔点Melting point 82℃-86℃
溶解性Appearance of solution 无色透明(10% 水溶液)
氧化物oxidized product: < 0.2% (UV 283 nm)
吸光度Abs.@285nm (0.02M, 水) ≤0.15
品级Grade 分子生物学级
(for molecular biology, ≥99% )
外观Appearance 白色粉末
红外光谱鉴别Infrared spectrometry Conforms
纯度Purity ≥99.0% (碘量滴定)
熔点Melting point 82°C - 84°C
水溶解试验solubility in water 50MG/ML in water
重金属(以Pb计)Heavy metals ≤5 PPM
DNase, RNase, and protease none detected
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