Identity
Classification
- Categories
- Indicators primary
Technical Data
Properties
| Property | Value | Unit |
|---|---|---|
| Physical state at 20 °C | Solid | — |
| Colour | Dark red powder | — |
| Odour | Odorless | — |
| Melting point/ Freezing point [°C] | 179 °C | °C |
| Vapour density | 9.3 | — |
| Solubility in water [% weight] | Insoluble in water | — |
These are recorded catalogue property values. Product specification limits, where available, are listed under Specifications.
Specifications
| Parameter | Specification | Unit |
|---|---|---|
| Appearance | Dark red to maroon to violet or purple powder or crystals | — |
| Identity | Passes test | — |
| pH transition range (4.2 - 6.2) | Pink Red – yellow orange | — |
| Insoluble matter in ethanol (1 g/L) | Passes test | — |
| Absorption maxima (buffer pH 4.2) | 523 - 526 nm | nm |
| Absorption maxima (buffer pH 6.2) | 427 - 437 nm | nm |
| Loss on drying (110 °C) | Max 5.0 % | % |
| Residue on ignition | Max 2.0 % | % |
Packaging
| Pack size | SKU |
|---|---|
| 25 g | RA001851-PK-25G |
| 100 g | RA001851-PK-100G |
| 1 kg | RA001851-PK-1KG |