About This Item
| Product Name |
Methyl Red Indicator |
| Product Code |
366708 |
| Appearance |
Dark red to maroon to violet or purple powder or crystals |
| Formula |
C₁₅H₁₅N₃O₂ |
| EC-No. |
207-776-1 |
| CAS-No. |
493-52-7 |
| Molecular Weight |
269.31 |
| Grade |
(C.I.NO.13020) |
Specification
| Colour |
Dark red |
| Odour |
Odourless |
| Melting point |
179 – 182 °C |
| Flammability (solid, gas) |
Non flammable |
| Relative vapour density at 20 °C |
9.3 (Air = 1) |
| Solubility |
Water: Insoluble in water; Ethanol: Soluble in ethanol |
| pH transition range (4.2 – 6.2) |
Pink Red – yellow orange |
| Loss on drying (at 110°C) |
Max 5.0% |
| Residue on ignition (as SO₄) |
Max 2.0% |
| Absorption maxima (buffer pH 6.2) |
427 – 437 nm |
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