CARMINIC ACID For Microscopy
C.I.No.75470 Used as a red colouring agent.
Article No. | Grade | Purity | CAS No. | Molecular Formula | Molecular Weight | H.S. Code | Shelf Life |
---|---|---|---|---|---|---|---|
SC0703 | For Microscopy | 98% | 1260-17-9 | C22H20O13 | 492.4 | 3203.0090 | 60 Months |
Packings
1 g,5 g |
Physical Properties
Physical state at 20 °C | Solid |
Colour | Red |
Odour | Odorless |
pH value | 4.8 - 6.2 |
Solubility in water [% weight] | Appreciable (> 10%) |
Specifications
Appearance | Dark brownish red powder |
Assay (acidimetric; on dried basis) | Min 98% |
Loss on drying (at 105°C) | Max 7.0% |
Suitability (for microscopy) | Passes test |
Absorption maxima at pH 3.0 | 490 - 495 nm |
Specific absorptivity 1%/1cm (at λmax) | Min 130 |
Safety Information and Hazard Symbols
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Risk Statement | |
Safety Statement | 22-24/25 |