Sunset yellow
Buy Sunset yellow (CAS 2783-94-0) from Zemixal. Lab and bulk packs, batch COA, fast global delivery. Packs from 25 g. Catalogue no. ZX-000716.
About Sunset yellow
Sunset yellow sits in our stains, Fluorescent Dyes & Histology Reagents section and ships worldwide from stock or short lead time. Identity at a glance: CAS 2783-94-0, formula C16H10N2Na2O7S2 and molar mass 452.4 g/mol. It is described as solid.
Where it is used
- Histology & cytology staining
- Microscopy
- Clinical laboratories
- Food & flavour applications
Storage and safety notes
Physical constants on file: melting point >300 °C. Classified under GHS with signal word Warning and hazard statements H315, H319 and H335. Read the SDS before first use.
Standard pack sizes are 25 g, 100 g and 1 kg, and custom quantities are quoted on request. You receive a batch certificate of analysis and a 16-section SDS with each order. 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
- Food & flavour applications
Applications
Specifications and identifiers
| Product name | Sunset yellow |
|---|---|
| Catalogue number | ZX-000716 |
| CAS number | 2783-94-0 |
| IUPAC name | disodium;6-hydroxy-5-[(4-sulfonatophenyl)diazenyl]naphthalene-2-sulfonate |
| Molecular formula | C16H10N2Na2O7S2 |
| Molar mass | 452.4 g/mol |
| Exact mass | 451.9725 |
| Physical form | Solid |
| Appearance | Solid |
| Melting point | >300 °C |
| H-bond donors / acceptors | 1 / 9 |
| Topological polar surface area | 176 Ų |
| HS code | 29420090 |
| InChIKey | OIQPTROHQCGFEF-UHFFFAOYSA-L |
| SMILES | C1=CC(=CC=C1N=NC2=C(C=CC3=C2C=CC(=C3)S(=O)(=O)[O-])O)S(=O)(=O)[O-].[Na+].[Na+] |
| PubChem CID | 17730 |
| Synonyms | Food yellow 3, FD&C Yellow 6, Sunset Yellow FCF, C.I. Food Yellow 3, Orange Yellow S, FD&C Yellow No. 6, Gelborange-S, FD&C yellow no.6, C.I. Direct Yellow 11, FD & C Yellow No. 6, Food Yellow No.5, Dye FDC Yellow No. 6 |
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, P305 + P351 + P338
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.
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- Formula
- C40H28Cl2N12O10
- MW
- 907.6 g/mol
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