β-Naphthol violet
Buy β-Naphthol violet (CAS 7143-21-7) from Zemixal: C16H9N3Na2O9S2, COA and SDS with every lot, worldwide shipping. Packs from 25 g.
About β-Naphthol violet
β-Naphthol violet sits in our stains, Fluorescent Dyes & Histology Reagents section and ships worldwide from stock or short lead time. For your records (AR), the material is defined by CAS 7143-21-7, formula C16H9N3Na2O9S2 and molar mass 497.4 g/mol. Expect brownish to red powder.
Where it is used
- Histology & cytology staining
- Microscopy
- Clinical laboratories
Handling and storage
Reported physical data: melting point 122 °C. Solubility: soluble in water. Classified under GHS with signal word Warning and hazard statements H315, H319 and H335. Read the SDS before first use.
Order it in 25 g, 100 g and 1 kg packs or ask for a bulk quotation. Every shipment includes a batch certificate of analysis and a 16-section SDS. Send an enquiry through the quote panel and you get a formal offer with Incoterms and delivery time.
Typical uses
- Histology & cytology staining
- Microscopy
- Clinical laboratories
Applications
Grade guides
Specifications and identifiers
| Product name | β-Naphthol violet |
|---|---|
| Catalogue number | ZX-000742 |
| CAS number | 7143-21-7 |
| IUPAC name | disodium;3-hydroxy-4-[(4-nitrophenyl)diazenyl]naphthalene-2,7-disulfonate |
| Molecular formula | C16H9N3Na2O9S2 |
| Molar mass | 497.4 g/mol |
| Exact mass | 496.9576 |
| Grade | AR |
| Physical form | Powder |
| Appearance | Brownish to red powder |
| Melting point | 122 °C |
| Solubility | Soluble in water |
| H-bond donors / acceptors | 1 / 11 |
| Topological polar surface area | 222 Ų |
| HS code | 32049000 |
| InChIKey | YTTDMCWAOBZSJR-UHFFFAOYSA-L |
| SMILES | C1=CC(=CC=C1N=NC2=C3C=CC(=CC3=CC(=C2O)S(=O)(=O)[O-])S(=O)(=O)[O-])[N+](=O)[O-].[Na+].[Na+] |
| PubChem CID | 3084003 |
| Synonyms | Disodium 3-hydroxy-4-((4-nitrophenyl)azo)naphthalene-2,7-disulphonate, Disodium 3-hydroxy-4-[(4-nitrophenyl)azo]naphthalene-2,7-disulphonate, beta-NAPHTHOL VIOLET, Disodium 3-hydroxy-4-(4-nitrophenyl)azonaphthalene-2,7-disulphonate, Sodium 3-hydroxy-4-((4-nitrophenyl)diazenyl)naphthalene-2,7-disulfonate, A-Naphthol Violet, 2-Naphthol violet, 1-(4-Nitrophenylazo)-2-naphthol-3,6-disulfonic Acid Disodium Salt, Disodium 3-hydroxy-4-[(4-nitrophenyl)diazenyl]naphthalene-2,7-disulfonate |
Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.
Safety and GHS hazards
Signal word Warning
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements P261, P264, P264 + P265, P271, P280, P302 + P352, P304 + P340, P305 + P351 + P338, P319, P321, P332 + P317, P337 + P317, P362 + P364, P403 + P233, P405, P501
Classification summarised from public GHS notifications. It can vary with grade and concentration, so always follow the SDS supplied with your lot.
Pack sizes
| 25 g | Quoted on request | |
| 100 g | Quoted on request | |
| 1 kg | Quoted on request |
Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.
Questions about β-Naphthol violet
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