Bromocresol Purple
Bromocresol Purple (CAS: 115-40-2, C21H16Br2O5S, MW: 540.22) is a tribromophenolsulfonphthalein dye used as a pH indicator. It exhibits a colour change from yellow below pH 5.2 to purple above pH 6.8. This compound is primarily employed in laboratory settings for the spectrophotometric determination of serum albumin, demonstrating its utility in biochemical and clinical analyses.
- IUPAC
- 5,5′-Dibromo-o-cresolsulfonphthalein,Bromcresol purple sultone form
- Synonyms
- 5,5′-Dibromo-o-cresolsulfonphthaleinBromcresol purple sultone form
pH Indicator
Bromocresol Purple functions as a visual pH indicator, exhibiting distinct colour transitions. It is yellow in acidic conditions (below pH 5.2) and turns purple in alkaline conditions (above pH 6.8), making it useful for observing pH changes in various chemical processes.
Spectrophotometric Determination of Serum Albumin
A key application of Bromocresol Purple is in the quantitative analysis of serum albumin. Its specific reaction allows for spectrophotometric measurement, aiding in clinical diagnostics and biochemical research by assessing protein levels in biological samples.
Cell Biology Reagent
Within cell biology, Bromocresol Purple can be utilised in cell culture media or as a staining agent. Its properties may assist in monitoring cellular environments or visualising specific cellular structures, contributing to research in biological sciences.
Hematology and Histology Staining
This compound is also noted for its use in hematology and histology as a stain. It can be applied to visualise cellular components or tissues, supporting microscopic examination and diagnostic procedures in medical and biological laboratories.
| Molecular weight | 540.22 |
|---|---|
| Empirical formula | C21H16Br2O5S |
| Application | Spectrophotometric determination of serum-albumin |
| Melting point | 240 °C (dec.)(lit.) |
Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-36 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Ph Range | 5.2 - 6.8, yellow to purple |
|---|
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 Bromocresol Purple primarily used for?
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Bromocresol Purple is primarily used as a pH indicator and for the spectrophotometric determination of serum albumin in laboratory settings.
What are the CAS number and chemical formula for Bromocresol Purple?
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The CAS number for Bromocresol Purple is 115-40-2, and its chemical formula is C21H16Br2O5S.
What grade and purity does Tech Serve Solutions supply for Bromocresol Purple?
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Tech Serve Solutions supplies Bromocresol Purple at a standard laboratory/research grade. The specific purity is indicated on the Certificate of Analysis provided with the product. We do not represent this product as USP, BP, or EP grade.
What are the main safety considerations when handling Bromocresol Purple?
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Bromocresol Purple is classified with Warning signal word, with hazards including skin irritation (H315), eye irritation (H319), and respiratory tract irritation (H335). Appropriate personal protective equipment, such as a dust mask (type N95 or equivalent), eyeshields, and gloves, should be used. Ensure good ventilation and avoid inhaling dust.
How is Bromocresol Purple packaged and shipped by TSS?
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Tech Serve Solutions packages Bromocresol Purple securely for laboratory use and exports globally. Specific packaging details are available upon request, and shipments comply with international transport regulations for chemicals.
How can I request a sample or a quote for Bromocresol Purple?
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To request a sample or a quote for Bromocresol Purple, please contact our sales team via the website or directly by email, providing your contact details and the quantity required.
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