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CARMINE For Microscopy C.I.No.75470 -Nuclear stain. Suitable for use in Orth’s Lithium Carminic technique Alum lake of carminic acid, Cochineal, Nacarat, Natural Red 4
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Specification
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General
Description
| Article No. | 02550 | Grade | For Microscopy |
| Purity | 98% | CAS No. | 1260-17-9 |
| Molecular Formula | C22H20O13 | Molecular Weight | 492.40 |
| H.S. Code | 3203.0090 | Shelf Life | 60 Months |
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
Safety Statement: 22-24/25
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