Pyrogallol Red

Product Description

Pyrogallol Red (PGR) is a reddish-brown crystalline dye commonly used as a pH indicator, metal ion complexing agent, and spectrophotometric reagent. It forms stable colored complexes with various metal ions and is widely employed in analytical chemistry, biochemical assays, and environmental testing.
Known for its color change sensitivity over a wide pH range, Pyrogallol Red is particularly useful in spectrophotometric determination of proteins, complexometric titrations, and buffer preparation in research and analytical laboratories.

 

Key Features

• Chemical Name: Pyrogallol Red
• Chemical Formula: C₁₉H₁₄O₈S
• CAS Number: 32638-88-3
• Molecular Weight: 402.37 g/mol
• Appearance: Reddish-brown to dark red crystalline powder
• Odor: Odorless
• Solubility: Soluble in water and ethanol; forms red solutions in neutral or slightly acidic media
• Purity: ≥98% (Analytical / Indicator Grade)
• pH Transition Range: pH 5.2 (yellow) to pH 6.8 (red)
• Stability: Stable under normal conditions; sensitive to strong oxidizing agents

Applications

Analytical Chemistry

• Used as a spectrophotometric reagent for determining metal ions such as Al³⁺, Fe³⁺, and Cu²⁺.
• Applied in complexometric titrations due to its strong color change with varying pH and metal concentration.
• Serves as a chromogenic indicator in chemical and environmental analysis.

Biochemical & Clinical Research

• Widely used in the Lowry protein assay for protein determination.
• Employed in enzyme activity assays and colorimetric biochemical measurements.

Environmental Testing

• Used for trace metal detection and pollution monitoring in water and soil samples.

Educational & Laboratory Use

• Demonstrates pH indicator properties and metal-ligand interactions in academic laboratories.

Safety & Handling

• Hazard: May cause irritation to skin, eyes, and respiratory tract. Harmful if swallowed or inhaled.
• Precautions: Handle with gloves, goggles, and a lab coat. Work in a well-ventilated area or under a fume hood.
• Storage: Store in a cool, dry, and dark place, tightly closed and protected from moisture and strong oxidizers.
• Emergency: In case of contact, rinse immediately with water and seek medical attention if necessary.

Why Choose Pyrogallol Red?

• High-purity spectrophotometric-grade reagent.
• Reliable colorimetric and complexing properties for analytical precision.
• Suitable for biochemical, environmental, and laboratory applications.
• Professionally tested and securely packaged for quality and stability.

Price in Bangladesh

Available in analytical-grade packaging (5 g, 10 g, 25 g, 100 g) at competitive prices.
Bulk and institutional discounts offered for research, clinical, and industrial laboratories.

Where to Buy

Pyrogallol Red is available from authorized laboratory chemical suppliers and distributors across Bangladesh.

Why Buy from M/S Bright Scientific Co.?

• Trusted Supplier: Serving universities, research institutions, and industrial laboratories.
• Guaranteed Quality: Verified for analytical and spectrophotometric use.
• Affordable Pricing: Competitive and flexible options for bulk and retail orders.
• Reliable Delivery: Safe and prompt distribution nationwide.

Contact Information
M/S Bright Scientific Co.
📞 Phone: 01711285976