Rose Bengal sodium salt
Rose Bengal sodium salt (CAS 632-69-9), with the molecular formula C20H2Cl4I4Na2O5 and a molecular weight of 1017.64 g/mol, is a vibrant dye. It is primarily recognised for its application as an adsorption indicator in titrations and as a stain in microscopy. Its fluorescent properties also lend themselves to use in biological staining and diagnostic applications.
- IUPAC
- 4,5,6,7-Tetrachloro-2′,4′,5′,7′-tetraiodofluorescein disodium salt,Acid Red 94,Bengal Rose B sodium salt,Rose Bengal sodium salt
- Synonyms
- 4,5,6,7-Tetrachloro-2′,4′,5′,7′-tetraiodofluorescein disodium saltAcid Red 94Bengal Rose B sodium saltRose Bengal sodium salt
Adsorption Indicator
Rose Bengal sodium salt functions as an adsorption indicator, particularly useful in precipitation titrations. It undergoes a distinct colour change at the endpoint, aiding in accurate volumetric analysis.
Microscopy Stain
Utilised for staining in microscopy, this compound is effective for biological samples, including bacteria, histological tissues, and for fluorescence microscopy. Its ability to bind to proteins is key to its staining capabilities.
Fluorescent Probes
With excitation at 548 nm and emission characteristics, Rose Bengal sodium salt can be employed as a fluorescent probe in various biochemical and biological research applications.
| Molecular weight | 1017.64 |
|---|---|
| Empirical formula | C20H2Cl4I4Na2O5 |
| Grade | adsorption indicatorfor microscopy (Bact., Fl., Hist.) |
| Protective equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
|---|---|
| Water hazard class (WGK, DE) | 3 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Colour Index Number | 45440 |
|---|---|
| Absorption | λmax 549 nm |
| Fluorescence | λex 548 nm in 1% NaHCO3 |
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 Rose Bengal sodium salt used for?
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Rose Bengal sodium salt is primarily used as an adsorption indicator in titrations, a stain in microscopy (including for bacteria and histological tissues), and as a fluorescent probe in biochemical research.
What are the CAS number and formula for Rose Bengal sodium salt?
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The CAS number for Rose Bengal sodium salt is 632-69-9 and its molecular formula is C20H2Cl4I4Na2O5.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Rose Bengal sodium salt as an adsorption indicator for microscopy (Bact., Fl., Hist.). Further purity specifications should be confirmed with a Certificate of Analysis.
What are the safety considerations when handling Rose Bengal sodium salt?
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Handling requires appropriate personal protective equipment, including eyeshields, gloves, and respiratory protection (type N95 or P1 filter). Refer to the Safety Data Sheet for detailed hazard information. The WGK is 3.
How is Rose Bengal sodium salt packed and shipped?
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Products are carefully packed and exported by TSS in compliance with international shipping regulations for chemicals.
How can I request a quote or sample?
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To request a quote or a sample of Rose Bengal sodium salt, please contact the TSS sales team through our website or by calling our office.
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