产品编号：P998890
产品规格：10g
产品价格：面议
| 标准品编号: | P998890 |
| 名称: | Pyrocatechol Violet |
| 别名: | Catechol Violet, Pyrocatecholsulfonphthalein; 4,4'-(1,1-Dioxido-3H-2,1-benzoxathiol-3-ylidene)bis[1,2-benzenediol]; 3,3-Bis(3,4-dihydroxyphenyl)-3H-2,1-benzoxathiole 1,1-Dioxide; NSC 8805; PKF; Pyrocatechin Sulfonephthalein; Pyrocatechol Sulfonephthalein; 4,4'-(3H-2,1-Benzoxathiol-3-ylidene)bis-1,2-benzenediol S,S-Dioxide |
| CAS号: | 115-41-3 |
| 分子式: | C₁₉H₁₄O₇S |
| 分子量: | 386.38 |
| 类别: | Research Tools; |
| 应用: | Pyrocatechol Violet is a complexometric indicator dye. This phthalein dye chelates metals to form blue to blue-violet complexs. It is also a pH indicator with a transition interval from 0 - 8 (red to violet). It is known to be unstable when alkaline. The stability is improved at a neutral pH. When the pH is between 2-7 the color may be yellow. Dyes and metabolites. |
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