BROMOTHYMOL BLUE
BROMOTHYMOL BLUE
| Article No | 511503 |
| Grade | AR/ACS |
| Purity | – |
| CAS No | 76-59-5 |
| Molecular Formula | C27H28Br2O5S |
| Molecular Weight | 624.40 |
| H.S. Code | 2934.9990 |
| Shelf Life | 60 Months |
Physical properties
| Physical State at 20°C | Solid |
| Colour | Pink to purple |
| Odour | Characteristic odour |
| Melting Point/Freezing Point | 200 – 202 °C |
| Solubility in Water | Slightly soluble in water |
Specifications
| Appearance | Pink to purple color powder |
| pH Transition (6.0-7.6) | Yellow to blue |
| Clarity of Solution | Passes test |
| Loss on Drying (at 110°C) | Max 3.0% |
| Absorption Maximum λ1 (pH 5.8) | 430 – 435 nm |
| Absorption Maximum λ2 (pH 7.6) | 615 – 618 nm |
| Absorptivity (A1% / 1 cm at λ1; (pH 5.8) on dried substance) | 260 – 300 |
| Absorptivity (A1% / 1 cm at λ2; (pH 7.6) on dried substance) | 470 – 520 |
| Packings | 25 gm |
