Bromopyrogallol Red
Bromopyrogallol Red (CAS: 16574-43-9), with the molecular formula C19H10Br2O9S and a molecular weight of 574.15 g/mol, is a high-purity indicator grade chemical. This metallochromic indicator is essential for analytical chemistry, particularly in metal titration procedures. Its distinct colour change properties make it invaluable for precise laboratory analyses and quality control applications in various scientific fields.
- IUPAC
- 5′,5′′-Dibromopyrogallolsulfonephthalein

Metallochromic Indicator
Bromopyrogallol Red serves as a metallochromic indicator in analytical titrations. It forms distinct colour complexes with various metal ions, allowing for the visual determination of endpoint in complexometric titrations.
Analytical Reagent
Utilised as a key reagent in analytical chemistry, Bromopyrogallol Red is employed in laboratory settings for quantitative analysis and quality control testing of metal ions and other substances.
Stains and Dyes
As a dye, Bromopyrogallol Red can be used in specific staining applications within histology and cell biology, although its primary function remains as an indicator.
| Molecular weight | 574.15 |
|---|---|
| Empirical formula | C19H10Br2O9S |
| Grade | indicator grade |
| Application | Metallochromic indicator |
| Composition | Dye content, 70% |
| Melting point | 300 °C(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 552 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 Bromopyrogallol Red used for?
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Bromopyrogallol Red (CAS: 16574-43-9) is primarily used as a metallochromic indicator for metal titrations in analytical chemistry. It is also categorised under analytical reagents, stains, and dyes.
What is the CAS number and chemical formula for Bromopyrogallol Red?
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The CAS number for Bromopyrogallol Red is 16574-43-9, and its chemical formula is C19H10Br2O9S.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Bromopyrogallol Red in an indicator grade with a dye content of approximately 70%. TSS does not represent this product as USP, BP, EP, or any other pharmacopoeia grade.
What are the safety and handling precautions for Bromopyrogallol Red?
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When handling Bromopyrogallol Red, it is essential to use personal protective equipment including eyeshields and gloves. A type N95 (US) or type P1 (EN143) respirator filter is recommended. The substance has a WGK Germany rating of 3, indicating a high hazard level.
How is Bromopyrogallol Red packaged and exported?
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Bromopyrogallol Red is carefully packaged to ensure product integrity during transit. As a global supplier, Tech Serve Solutions expertly handles the export of this chemical, complying with all relevant international shipping regulations.
How can I request a sample or quote for Bromopyrogallol Red?
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To request a sample or a quote for Bromopyrogallol Red, please contact our sales team through the website or by phone. Our team will assist you with your specific requirements.
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