吖啶橙的质量标准

2025-04-24 09:50:37
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回答1:

项目 电泳级
λmax., 50 % EtOH:   490 - 495 nm
E 1 %/1 cm, λmax.:  > 1200 (EtOH 50 %)
干燥损失Loss on drying:  ≤ 5 %
pH (1 %; H2O):  约4.0 (20°C)
品级Grade 分子生物学级,≥80.0%
(for molecular biology,Dye Content ≥80.0%(HPLC))
外观Appearance Red to Brown Powder
红外光谱Infrared spectrum Conforms to Structure
水溶性Solubility c = 1mg/ml; Water,Dark Orange to Amber, Clear
氮Nitrogen 8.5- 12.5 %
染料含量Dye Content (HPLC) ≥80.0%