Catechol Violet AR
For the Colorimetric determination of metals.
Used in a rapid and sensitive method for tin.
Pyrocatechol Violet; Pyrocatecholsulfonphthalein
Product Code. |
00702 |
Grade |
|
Purity |
CAS No. |
115-41-3 | |
Molecular Formula |
C19H14O7S |
Molecular Weight |
386.38 |
H.S.Code |
3204.90000 |
Shelf Life |
60 Months |
Physical Properties
| Physical state at 20 °C |
Solid |
Colour |
Yellow to pink |
Melting point/ Freezing point [°C] |
185 °C |
| Solubility in water [% weight] |
Soluble in water |
Packaging
Specification
| Appearance | Dark green to green metallic or Brown Crystalline powder |
| Absorption maxima (in methanol) | 441 to 449 nm |
| Specific absorptivity A1%/1 cm (lmax; methanol) | Min 375 |
| Appearance of solution (0.1% aq. solution ) | Clear |
| Suitability (for complexometric determination of metal oxides) | Passes test |
Safety Information and Hazard Symbols