METHYL ORANGE INDICATOR
METHYL ORANGE INDICATOR
| Article No. | 532903 |
| Grade | ACS grade |
| Purity | – |
| CAS No. | 547-58-0 |
| Molecular Formula | C₁₄H₁₄N₃NaO₃S |
| Molecular Weight | 327.33 g/mol |
| H.S. Code | 29270090 |
| Shelf Life | 60 Months |
Physical properties
| Physical State at 20 ºC | Solid |
| Color | Yellow to orange |
| Odor | Odorless |
| Density (g/cm³) | 1 |
Specifications
| Appearance | Orange-yellow, crystalline powder |
| Solubility | Slightly soluble in water (5g/l), practically insoluble in ethanol (96%) |
| Absorption Maximum λ₀₁ (pH 3.1) | 501-505 nm |
| Absorption Maximum λ₀₂ (pH 4.4) | 466-471 nm |
| Absorptivity at λ₀₁ max (pH 3.3) | 1%/1cm, dried substance |
| Absorptivity at λ₀₂ max (pH 4.4) | 1%/1cm, dried substance |
| Visual Transition Interval | At pH 3.1 – pink, At pH 4.4 – orange yellow |
| Clarity of Solution | Passes test |
| Loss on Drying | Max 5% |
| Packings | 25 gm |
