Cresol Red sodium salt
Cresol Red sodium salt (CAS: 62625-29-0; Formula: C21H17NaO5S; MW: 404.41) is a water-soluble sulphonphthalein dye. It functions as a pH indicator, exhibiting a colour change and is widely employed in various laboratory applications. Its distinct spectral properties, with an absorption maximum at 425 nm, make it valuable in analytical chemistry and biological staining techniques.
pH Indicator
Cresol Red sodium salt is utilized as a pH indicator in titrations and general laboratory use, changing colour within specific pH ranges to denote the endpoint of a reaction. Its distinct colour transitions aid in visual pH determination.
Biological Staining
This compound serves as a stain in cell biology, histology, and hematology. It is employed to selectively colour different cellular components or tissues, enhancing microscopic visualisation and differentiation for diagnostic and research purposes.
Analytical Reagent
As an analytical reagent, Cresol Red sodium salt is used in various chemical analyses. Its properties allow for its integration into assay development and quality control procedures requiring precise colourimetric measurements.
| Molecular weight | 404.41 |
|---|---|
| Empirical formula | C21H17NaO5S |
| Melting point | 250 °C (dec.)(lit.) |
| 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.
| Absorption | λmax 425 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 Cresol Red sodium salt used for?
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Cresol Red sodium salt is primarily used as a pH indicator in titrations and laboratory analyses, and as a stain in cell biology, histology, and hematology for microscopic visualisation.
What are the CAS number and formula for Cresol Red sodium salt?
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The CAS number for Cresol Red sodium salt is 62625-29-0, and its empirical formula is C21H17NaO5S.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Cresol Red sodium salt. The specific assay and grade are detailed in the product specifications; TSS does not represent this product as USP, BP, EP, or pharmacopoeia grade unless explicitly stated.
How should Cresol Red sodium salt be handled safely?
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Handle Cresol Red sodium salt with appropriate personal protective equipment, including eyeshields and gloves. A respirator filter such as type N95 (US) or type P1 (EN143) is recommended, particularly when handling powders. Consult the safety data sheet for comprehensive handling instructions.
Is Cresol Red sodium salt a controlled substance?
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The provided data does not indicate that Cresol Red sodium salt is a controlled substance.
How is Cresol Red sodium salt packed and shipped?
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Cresol Red sodium salt is carefully packed to ensure stability during transit and is available for domestic and international export. Specific packaging details can be provided upon request.
How can I request a sample or quote for Cresol Red sodium salt?
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To request a sample or obtain a quotation for Cresol Red sodium salt, please contact the Tech Serve Solutions sales team through our website or designated contact channels, providing your specific requirements.
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