Calcein disodium salt
Calcein disodium salt (CAS: 108750-13-6), with the molecular formula C30H24N2Na2O13 and a molecular weight of 666.50 g/mol, is a fluorescent indicator. This compound is primarily utilised in analytical chemistry as a chelator and ion probe, particularly for complexometric titrations. Its distinct fluorescence properties make it valuable in various detection and biochemical assay applications.
- IUPAC
- Bis[N,N-di(carboxymethyl)aminomethyl]fluorescein disodium salt,Fluorescein-bismethyliminodiacetic acid disodium salt
- Synonyms
- Bis[N,N-di(carboxymethyl)aminomethyl]fluorescein disodium saltFluorescein-bismethyliminodiacetic acid disodium salt

Complexometric Titrations
Calcein disodium salt serves as an effective metal titration indicator. It forms fluorescent complexes with certain metal ions, allowing for precise endpoint determination in complexometric titrations.
Fluorescent Indicator
With excitation at 494 nm and emission at 517 nm (pH 9.0), this compound functions as a fluorescent indicator. It is useful in various detection methods requiring fluorescence-based measurements.
Chelator and Ion Probe
As a chelator and ion probe, it finds applications in biochemical research and diagnostics. Its ability to interact with specific ions enables its use in cellular imaging and flow cytometry.
| Molecular weight | 666.50 |
|---|---|
| Empirical formula | C30H24N2Na2O13 |
| Grade | for complexometry |
| 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.
| Fluorescence | λex 494 nm; λem 517 nm (pH 9.0) |
|---|
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 Calcein disodium salt used for?
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Calcein disodium salt is primarily used as a fluorescent indicator for complexometric titrations, a chelator and ion probe in biochemical applications, and in flow cytometry.
What are the CAS number and formula for Calcein disodium salt?
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The CAS number for Calcein disodium salt is 108750-13-6, and its molecular formula is C30H24N2Na2O13.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Calcein disodium salt for complexometry. For detailed purity specifications, please refer to the product's Certificate of Analysis.
How should Calcein disodium salt be handled safely?
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When handling Calcein disodium salt, it is essential to use appropriate personal protective equipment, including eyeshields and gloves. A type N95 (US) or type P1 (EN143) respirator filter should be used if necessary. The product has a WGK Germany rating of 3.
How is Calcein disodium salt packed and shipped?
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Calcein disodium salt is carefully packed to ensure its stability during transit and is exported globally by Tech Serve Solutions.
How can I request a sample or quote for Calcein disodium salt?
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To request a sample or a quotation for Calcein disodium salt, please contact our sales team through the website or directly via email.
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