Congo red, indicator
Congo red, indicator (CAS 573-58-0) supplier Zemixal. Lab and bulk packs, batch COA, fast global delivery. Catalogue no. ZX-000539.
About Congo red, indicator
Congo red, indicator sits in our stains, Fluorescent Dyes & Histology Reagents section and ships worldwide from stock or short lead time. For your records (Microscopy), the material is defined by CAS 573-58-0, formula C32H22N6Na2O6S2 and molar mass 696.7 g/mol. Expect powder.
Where it is used
- Histology & cytology staining
- Microscopy
- Clinical laboratories
Handling and storage
Reported physical data: melting point >360 °C. Handle with the usual laboratory precautions and consult the SDS supplied with each lot.
Order it in 25 g, 100 g, 250 g, 1 kg and 4 x 25 kg packs or ask for a bulk quotation. Every shipment includes a batch certificate of analysis and a 16-section SDS. Add it to your quote list and our team replies with price, lead time and shipping options within one business day.
Typical uses
- Histology & cytology staining
- Microscopy
- Clinical laboratories
Applications
Specifications and identifiers
| Product name | Congo red, indicator |
|---|---|
| Catalogue number | ZX-000539 |
| CAS number | 573-58-0 |
| IUPAC name | disodium;4-amino-3-[[4-[4-[(1-amino-4-sulfonatonaphthalen-2-yl)diazenyl]phenyl]phenyl]diazenyl]naphthalene-1-sulfonate |
| Molecular formula | C32H22N6Na2O6S2 |
| Molar mass | 696.7 g/mol |
| Exact mass | 696.0838 |
| Grade | Microscopy |
| Physical form | Powder |
| Appearance | Powder |
| Melting point | >360 °C |
| H-bond donors / acceptors | 2 / 12 |
| Topological polar surface area | 233 Ų |
| HS code | 32041421 |
| InChIKey | IQFVPQOLBLOTPF-UHFFFAOYSA-L |
| SMILES | C1=CC=C2C(=C1)C(=CC(=C2N)N=NC3=CC=C(C=C3)C4=CC=C(C=C4)N=NC5=C(C6=CC=CC=C6C(=C5)S(=O)(=O)[O-])N)S(=O)(=O)[O-].[Na+].[Na+] |
| PubChem CID | 11313 |
| Synonyms | Congo Red 4B, Cosmos Red, Cotton Red B, Cotton Red C, Direct Red 28, Direct Red R, Direct Red Y, C.I. Direct Red 28, Congazone sodium, Benzo Congo Red, Mitsui Congo Red, Cotton Red L |
Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.
Safety and GHS hazards
No GHS classification is on file for this item. Handle it as an unknown laboratory chemical and request the SDS with your quotation.
Pack sizes
| 25 g | Quoted on request | |
| 100 g | Quoted on request | |
| 250 g | Quoted on request | |
| 1 kg | Quoted on request | |
| 4 x 25 kg | Quoted on request |
Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.
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