Description
| CAS | 143-74-8 |
| Molecular Formula | C19H14O5S |
| Molecular Weight | 354.38 |
| Shelf Life | 60 Months |
| Physical Properties | |||
| Physical State at 20 °C | Solid | Colour | Dark red powder |
| Odour | Odorless | Solubility in Water [% weight] | Slightly soluble in water |
| Specifications | |||
| Appearance | Reddish powder | Visual Transition Range | From pH 6.8 (Yellow) – 8.2 (Red) |
| Absorption Maxima at pH 6.5 (L1) | 430 – 435 nm | Absorption Maxima at pH 8.2 (L2) | 557 – 560 nm |
| Loss On Dryig (At 110°C) | Max 5.0% | Clarity of Solution | Passes ACS test |
| Dangerous Goods Information | |||
| UN Number | – | DG Class | – |
| Safety Information & Hazard Symbols | |
| Symbol | GHS07 |
| Signal Word | Warning |
| Hazard Statement | H315-H319-H335 |
| Precaution Statement | P261-P305 + P351 + P338 |















