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Congo Red C.I. 22120
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Incl. VAT
£8.25 to £44.37
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| Variation ID | Product Code | Pack Size | List Price | Qty | |
|---|---|---|---|---|---|
| RRBD75-T | 5g | £8.25 | |||
| RRBD75-U | 10g | £9.87 | |||
| RRBD75-W | 25g | £15.38 | |||
| RRBD75-2W | 50g | £24.64 | |||
| RRBD75-X | 100g | £44.37 |
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In biochemistry and histology, Congo Red is used to stain microscopic preparates, especially as a cytoplasm and erythrocyte stain. Apple-green birefringence of Congo Red stained preparates under polarized light is indicative for the presence of amyloid fibrils. Additionally, Congo Red is used in microbiological epidemiology to rapidly identify the presence of virulent serotype 2a Shigella flexneri, where the dye binds the bacterium's unique lipopolysaccharide (LPS) structure.
- Biological Dye
- Amyloid Stain
- pH Indicator
C.I. 22120
Molecular Formula: C32H22N6S2Na2
Molecular Weight: 696.66 g/mol
Melting Point: 360 C
Absorptivity (@lambda max): 585nm
Loss on drying: <2.5%
Transition Range (3.5-5): Blue-red
Cas Number: 573-58-0
Einecs Number: 209-358-4
HS Code / Commodity Code: 38229000
Hazard Phrases: H319,H350,H361d
Prec Phrases: P201,P281,P305+P351+P338,P308+P313
