Sudan I
Sudan I (CAS: 842-07-9), with the molecular formula C6H5N=NC10H6OH and a molecular weight of 248.28 g/mol, is a lysochrome diazo-conjugate dye. Historically used as an industrial dye for colouring waxes, oils, solvents, and polishes, it has also been regrettably misused in certain food products. Due to its classification, its use in food is now prohibited.
- IUPAC
- 1-Phenylazo-2-naphthol,Solvent Yellow 14
- Synonyms
- 1-Phenylazo-2-naphtholSolvent Yellow 14
Industrial Dyeing
Sudan I is employed as a colourant for non-food items such as waxes, oils, solvents, and polishes, imparting a distinct colour to these materials.
Histological Staining
This dye has found application in histology and cell biology for specific staining procedures, aiding in the visualisation of cellular structures.
Oil and Solvent Colouration
Its lipophilic nature makes Sudan I suitable for colouring oils and various industrial solvents, serving as a visual marker or identifier.
| Molecular weight | 248.28 |
|---|---|
| Linear formula | C6H5N=NC10H6OH |
| Application | Sudan I is a lysochrome, a diazo-conjugate dye, used as an industrial dye, added to products such as waxes, oils, petrol, solvents and polishes. Sudan I is a category 3 carcinogen previously, now banned, used to color certain foodstuffs. |
| Melting point | 131-133 °C(lit.) |
Hazard statements
- H317May cause an allergic skin reaction
- H341Suspected of causing genetic defects
- H351Suspected of causing cancer
- H413May cause long-lasting harmful effects to aquatic life
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
| Water hazard class (WGK, DE) | 2 |
|---|---|
| Hazard codes (EU) | Xn |
| Risk statements (R) | 40-43-53-68 |
| Safety statements (S) | 22-36/37-46-61 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Colour Index Number | 12055 |
|---|---|
| Absorption | λmax 418 nmλmax 476 nm (2nd) |
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Sudan I primarily used for?
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Sudan I is primarily used as an industrial dye for materials like waxes, oils, solvents, and polishes. It has also been used in histological staining and formerly, illicitly, in some food products.
What is the CAS number and molecular formula for Sudan I?
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The CAS number for Sudan I is 842-07-9, and its molecular formula is C6H5N=NC10H6OH.
What grade and purity does Tech Serve Solutions supply for Sudan I?
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Tech Serve Solutions supplies Sudan I typically as a technical or research grade material. We do not represent this product as meeting USP, BP, or EP pharmacopoeial standards.
How should Sudan I be handled safely?
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Sudan I (CAS: 842-07-9) is classified with GHS07 and GHS08 symbols and a 'Warning' signal word. It carries hazard statements including H317 (May cause an allergic skin reaction), H341 (Suspected of causing genetic defects), H351 (Suspected of causing cancer), and H413 (May cause long lasting harmful effects to aquatic life). Handle with appropriate personal protective equipment (P280) and avoid exposure.
Is Sudan I a controlled substance?
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While Sudan I is a known hazardous substance and its use in food is banned, the provided data does not indicate it is scheduled or controlled in a manner that restricts general sale or export by TSS.
How is Sudan I packed and shipped by TSS?
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Tech Serve Solutions exports chemicals globally, ensuring appropriate packaging and documentation for safe and compliant international shipment according to regulations.
How can I request a sample or quote for Sudan I?
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To request a sample or a quotation for Sudan I, please contact our sales team through the website or by direct inquiry, providing your specific requirements and delivery details.
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