Naphthol orange
Order Naphthol orange (CAS 523-44-4) online at Zemixal. Lab and bulk packs, batch COA, fast global delivery. Catalogue no. ZX-000646.
About Naphthol orange
Researchers and plant chemists source Naphthol orange from Zemixal for routine and specialised work. Key data (Microscopy): CAS 523-44-4, formula C16H11N2NaO4S and molar mass 350.3 g/mol. Expect orange to brown to dark red powder or crystals.
Where it is used
- Histology & cytology staining
- Microscopy
- Clinical laboratories
- Biological staining
Storage and safety notes
No GHS classification is recorded for this item, but handle it with normal laboratory care.
Order it in 10 g, 25 g, 100 g and 1 kg packs or ask for a bulk quotation. Each lot travels with 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
- Biological staining
Applications
Specifications and identifiers
| Product name | Naphthol orange |
|---|---|
| Catalogue number | ZX-000646 |
| CAS number | 523-44-4 |
| IUPAC name | sodium 4-[(4-hydroxynaphthalen-1-yl)diazenyl]benzenesulfonate |
| Molecular formula | C16H11N2NaO4S |
| Molar mass | 350.3 g/mol |
| Exact mass | 350.0337 |
| Grade | Microscopy |
| Physical form | Crystalline |
| Appearance | Orange to brown to dark red powder or crystals |
| H-bond donors / acceptors | 1 / 6 |
| Topological polar surface area | 111 Ų |
| HS code | 29420090 |
| InChIKey | AZLXCBPKSXFMET-UHFFFAOYSA-M |
| SMILES | C1=CC=C2C(=C1)C(=CC=C2O)N=NC3=CC=C(C=C3)S(=O)(=O)[O-].[Na+] |
| PubChem CID | 135513128 |
| Synonyms | Benzenesulfonic acid, 4-(2-(4-hydroxy-1-naphthalenyl)diazenyl)-, sodium salt (1:1), Benzenesulfonic acid, 4-[2-(4-hydroxy-1-naphthalenyl)diazenyl]-, sodium salt (1:1), Orange I, C.I. Acid Orange 20, Sodium 4-((4-hydroxynaphthalen-1-yl)diazenyl)benzenesulfonate, Acid Orange 20, alpha-Naphthol orange, Acid Leather Orange I, Japan Orange 1, A.F. Orange No. 1, Yellow 404, Tropaeolin 1 |
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
| 10 g | Quoted on request | |
| 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.
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- MW
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