Bromopyrogallol Red
Price 1 INR/ Kilograms
Bromopyrogallol Red Specification
- Purity
- >=99%
- Molecular Formula
- C19H10Br2O7S
- Taste
- Not determined
- Properties
- Water soluble, acid-base indicator dye, changes color based on pH, light yellow to red-brown color transition, stable under recommended storage conditions
- Solubility
- Soluble in water and ethanol
- Storage
- Store in a cool, dry place in tightly closed container, protected from light
- Shelf Life
- At least 3 years under proper storage
- CAS No
- 1651-96-9
- HS Code
- 3204.1200
- Poisonous
- May be harmful if swallowed or inhaled; handle with care
- Application
- Used as a complexometric indicator, analytical reagent for titrations, and biological staining
- Usage
- Add appropriate amount as specified for analytical experiments, especially in complexometric titrations
- Melting Point
- >300°C (decomposes)
- Smell
- Odorless
- Ingredients
- Bromopyrogallol Red (BPR); may contain trace inorganic impurities
- Appearance
- Reddish-brown to purple powder
- Grade
- Analytical Reagent (AR) Grade
- Structural Formula
- See image or chemical structural diagram
- Product Type
- Chemical Compound
- Ph Level
- Color change range: pH 3.2 (yellowish) to pH 4.4 (red)
- Physical Form
- Powder
- EINECS No
- 216-701-9
- Molecular Weight
- 548.16 g/mol
- Shape
- Crystalline powder
- Absorption Maximum (max)
- 473 nm in water at acidic pH
- Packaging
- Sealed amber glass bottles or HDPE containers, typically in 10 g, 25 g, 100 g, or 500 g packs
- Hazard Statements
- Irritant, avoid inhalation and contact with skin or eyes
- Regulatory Information
- Complies with REACH and GHS chemical safety regulations
- Disposal Methods
- Dispose of contents/container in accordance with local/regional/national/international regulations
- Compatibility
- Stable with most laboratory reagents
- Color Index Number
- C.I. 45380
- Sensitivity
- Sensitive to light and moisture
- Synonyms
- BPR, 3,4,5,6-tetrabromo-o-cresol sulfonephthalein
Bromopyrogallol Red Trade Information
- Minimum Order Quantity
- 25 Kilograms
- Supply Ability
- 100 Kilograms Per Week
- Delivery Time
- 1 Week
- Sample Available
- Yes
- Sample Policy
- Free samples are available
- Packaging Details
- Drum packing.
- Main Domestic Market
- All India
About Bromopyrogallol Red
Features:
- Non-toxicity
- Longer shelf life
- Accurate pH value
- Correct formulation
Versatile Acid-Base Indicator for Laboratory Analysis
Bromopyrogallol Red is valued for its distinct and easily observable color transitions in the pH range 3.2 (yellowish) to 4.4 (red), making it an essential choice for titrimetric analysis. Its water and ethanol solubility, combined with compatibility with most laboratory reagents, supports flexible usage in analytical and research settings.
Safe Handling and Storage Recommendations
For optimal stability, BPR should be preserved in tightly sealed amber glass or HDPE containers away from light and moisture. Proper handlingusing gloves and eye protectionis critical, as the powder is an irritant and may be harmful if inhaled or swallowed. Dispose of in accordance with relevant regulations to ensure safety.
FAQs of Bromopyrogallol Red:
Q: How should Bromopyrogallol Red be stored to maintain its quality?
A: Bromopyrogallol Red should be stored in a cool, dry location inside tightly closed containers, such as amber glass bottles or HDPE packaging, and protected from direct light and moisture. This approach ensures product stability and preserves its indicative properties, securing a shelf life of at least three years.Q: What are the primary applications and benefits of BPR in a laboratory setting?
A: Bromopyrogallol Red is mainly used as a complexometric indicator in analytical titrations and for biological staining. It offers clear, distinct color transitions over a narrow pH range, improving endpoint detection and analytical accuracy in research and quality control.Q: When is it appropriate to use Bromopyrogallol Red during titration?
A: BPR should be used when performing complexometric titrations or any procedures needing an indicator sensitive to pH changes between 3.2 and 4.4. Its color change from yellowish to red distinctly marks the endpoint, enhancing analytical precision.Q: What precautions must be taken when handling or disposing of BPR?
A: Protective gear such as gloves and safety goggles should be worn when handling Bromopyrogallol Red, as it is an irritant and may be hazardous if inhaled or ingested. Disposal must follow local, regional, or national chemical regulations to avoid environmental contamination.Q: How compatible is Bromopyrogallol Red with other reagents?
A: BPR demonstrates stable compatibility with the majority of laboratory reagents, minimizing risks of adverse reactions or decomposition during typical analytical applications, thereby ensuring consistent results.Q: Where is Bromopyrogallol Red manufactured and supplied from?
A: This high-purity, analytical reagent is manufactured, exported, and supplied by reputable chemical producers in India, readily available in common pack sizes suitable for laboratory and industrial requirements.
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