Allura Red AC
Allura Red AC (CAS: 25956-17-6), with the chemical formula C18H14N2Na2O8S2 and a molecular weight of 496.42 g/mol, is a synthetic azo dye. It presents as a dark red powder and is primarily recognised for its vibrant colouration properties. This compound finds utility in various laboratory applications, particularly in staining techniques within histology and cell biology due to its reliable performance in visualizing cellular structures.
- IUPAC
- Disodium 6-hydroxy-5-[(2-methoxy-5-methyl-4-sulfophenyl)azo]-2-naphthalenesulfonate

Histological Staining
Allura Red AC is employed as a stain in histological preparations. It aids in differentiating cellular components and tissues, providing visual contrast for microscopic examination.
Cell Biology Research
In cell biology, this dye can be used to stain specific cellular structures or as a component in various staining protocols. Its properties are beneficial for observing cellular morphology and organization.
Dye and Colorant Applications
As a synthetic azo dye, Allura Red AC exhibits strong colouration characteristics. It is recognised under Colour Index Number 16035, indicating its established role in dye applications.
| Molecular weight | 496.42 |
|---|---|
| Empirical formula | C18H14N2Na2O8S2 |
| Composition | Dye content, 80% |
| Melting point | >300 °C(lit.) |
| Colour Index Number | 16035 |
|---|---|
| Gene Information | human ... PTPN1(5770), PTPRF(5792) |
| Absorption | λmax 504 nm |
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 Allura Red AC typically used for?
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Allura Red AC is commonly used in histological and cell biology staining techniques. It is also recognised for its properties as a synthetic azo dye.
What are the CAS number and chemical formula for Allura Red AC?
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The CAS number for Allura Red AC is 25956-17-6, and its chemical formula is C18H14N2Na2O8S2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Allura Red AC with a dye content of 80%. We do not represent this product as USP, BP, or EP grade.
What are the primary safety concerns when handling Allura Red AC?
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Allura Red AC is classified under WGK Germany 2. It is important to consult the Safety Data Sheet (SDS) for detailed handling precautions, including appropriate personal protective equipment.
How is Allura Red AC typically packaged and shipped?
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Allura Red AC is carefully packaged to ensure product integrity during transit. Tech Serve Solutions exports fine chemicals globally, adhering to all relevant shipping regulations.
How can I request a sample or a quote for Allura Red AC?
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To request a sample or a quote for Allura Red AC, please contact our sales team through the website or directly via email, providing your contact details and intended quantity.
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