产品介绍：
基本信息
| 分子式/分子量 | C21H17NaO5S = 404.41 |
| 外观与形状(20℃) | 固体 |
| PubChem物质ID | 87575672 |
| MDL编号 | MFCD00010177 |
技术规格
| Appearance | Red to Dark blue to Black powder to crystal |
| Lambda max. | 434.0 to 437.0nm(KH2PO4?NaOH pH 7 buffer sol.) |
| Absorbance(E1%1cm) | min. 350(10mg/L, 434.0 to 437.0nm(KH2PO4?NaOH pH 7 buffer sol., 434.0 to 437.0nm) |
| Solubility in Water | almost transparency |
| Ignition residue(Sulfate) | 17.2 to 19.5 %(after drying) |
| Drying loss | max. 3.0 % |
| Transition interval(pH) | (red)1.2 to 2.8(yellow) , (yellow)7.4 to 9.0(purple) |
