Erythrosin B
Erythrosin B (CAS: 16423-68-0, C20H6I4Na2O5) is a certified stain and dye known for its vibrant red colour. With a molecular weight of 879.86 g/mol, this tetraiodinated fluorescein derivative is widely employed in biological staining for histology and cell biology applications. Its distinct absorption characteristics make it valuable for microscopic visualisation in various laboratory settings.
- IUPAC
- 2′,4′,5′,7′-Tetraiodofluorescein disodium salt,Acid Red 51,Erythrosin extra bluish,Iodoeosin
- Synonyms
- 2′,4′,5′,7′-Tetraiodofluorescein disodium saltAcid Red 51Erythrosin extra bluishIodoeosin
Biological Staining
Erythrosin B is a certified biological stain used extensively in histology and cell biology. It is particularly effective for staining cell nuclei and cytoplasm, aiding in microscopic examination and differentiation of cellular structures.
Microscopy
As a vital fluorescent stain, Erythrosin B enhances the visibility of biological specimens under a microscope. Its absorption maximum at 525 nm allows for clear visualisation in fluorescence microscopy techniques.
Diagnostic Assays
This dye can be utilised in specific diagnostic assays where cellular or tissue visualisation is required. Its reliability as a certified stain ensures consistent results in laboratory diagnostics.
| Molecular weight | 879.86 |
|---|---|
| Empirical formula | C20H6I4Na2O5 |
| Grade | certified by the Biological Stain Commission |
| Composition | Dye content, 90% |
Hazard statements
- H302Harmful if swallowed
- H413May cause long-lasting harmful effects to aquatic life
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 22 |
| Safety statements (S) | 36 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Colour Index Number | 45430 |
|---|---|
| Absorption | λmax 525 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 Erythrosin B used for?
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Erythrosin B is primarily used as a certified biological stain in histology and cell biology for microscopic visualisation of cellular structures. It is also employed in diagnostic assays.
What are the CAS number and formula for Erythrosin B?
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The CAS number for Erythrosin B is 16423-68-0, and its molecular formula is C20H6I4Na2O5.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Erythrosin B as a grade certified by the Biological Stain Commission, with a dye content of 90%. We do not represent this product as USP, BP, or EP grade.
How should Erythrosin B be handled safely?
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Erythrosin B is classified with the GHS07 symbol and a 'Warning' signal word. It carries hazard statements H302 (Harmful if swallowed) and H413 (May cause long lasting harmful effects to aquatic life). Handle with appropriate personal protective equipment, including a dust mask (type N95 US recommended), eyeshields, and gloves.
How is Erythrosin B packed and shipped?
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Erythrosin B is carefully packed and exported by Tech Serve Solutions in compliance with international shipping regulations for chemicals.
How can I request a sample or quote for Erythrosin B?
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To request a sample or a quotation for Erythrosin B, please contact our sales team through the enquiry form on our website or by calling us directly.
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