Ammonium purpurate, 99% or MX – is the ammonium salt of purpuric acid.
| Ammonium Purpurate, 99% - Specification | |
| Synonyms | 5,5'-Nitrilodibarbituric acid monoammonium salt, Murexide |
| Categories | Indicators, Metal titration indicators |
| Grade | Indicator |
| HSN Code | 29335400 |
| Appearance (Form) | Powder |
| Appearance (Colour) | Violet to purple to black |
| pH | 5 (1 g/l, H₂O, 20 °C) |
| Suitability | Passes test for suitability for complexometry |
| Melting point | >300 °C(lit.) |
| Colour index number | 3831445 |
| Ammonium purpurate, GR 99%+ - Specification | |
| Synonyms | 5,5'-Nitrilodibarbituric acid monoammonium salt, Murexide |
| Categories | Indicators, Metal titration indicators |
| Grade | AR / GR |
| HSN Code | 29335400 |
| Appearance (Form) | Powder |
| Appearance (Colour) | Violet to purple to black |
| Ash | 1% max |
| Melting point | >300 °C(lit.) |
| Absorption maxima (water) | 520 - 524 nm |
| Sensitivity | Passes test |
| Suitability | Passes test for suitability for complexometry |
Safety Information
- Personal Protective Equipment Eye shields, Gloves, type N95 (US), type P1 (EN143) respirator filter
- Safety Statements 22-24/25
- WGK Germany 3
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