Product Description
p-Rosolic Acid (C₁₉H₁₄O₃), also known as Aurine, is a highly sensitive acid-base indicator and colorimetric reagent widely used in analytical chemistry and laboratory titrations. It belongs to the triphenylmethane dye family, recognized for its vivid color transition and excellent solubility in alcohol.
p-Rosolic Acid changes color distinctly depending on pH, making it ideal for acid-base titrations, buffer studies, and visual endpoint detection. It also serves as a reference dye in photometric calibration and a reagent in organic synthesis.
With high purity and consistent performance, it is suitable for research laboratories, educational institutions, and chemical industries.
Key Features
- Chemical Name: p-Rosolic Acid (Aurine)
• Chemical Formula: C₁₉H₁₄O₃
• CAS Number: 603-45-2
• Molecular Weight: 290.31 g/mol
• Appearance: Yellow to reddish-yellow crystalline powder
• Odor: Odorless
• Solubility: Soluble in alcohol, ether, and dilute alkalis; slightly soluble in water
• Purity: ≥99% (Analytical / Indicator Grade)
• pH Transition Range: Approximately 5.0 – 7.0 (Yellow → Red)
• Stability: Stable under standard laboratory conditions
Applications
Analytical & Laboratory Uses
- Used as a pH indicator in acid-base titrations and buffer systems.
• Serves as a colorimetric reagent for qualitative and quantitative analysis.
• Employed in visual endpoint detection in chemical and educational laboratories.
• Functions as a reference indicator for calibration and standardization of analytical instruments.
Industrial & Research Applications
- Utilized as an intermediate dye component in colorant and pigment synthesis.
• Applied in organic chemistry as a reagent for structure elucidation and functional group testing.
• Used in research laboratories for spectroscopic and colorimetric analysis.
• Suitable for demonstration experiments and teaching laboratories due to its distinct color change properties.
Safety & Handling
- Hazard: May cause irritation to eyes, skin, and respiratory tract. Avoid inhalation and contact.
• Precautions: Handle with gloves, safety goggles, and protective clothing. Work in a well-ventilated area or under a fume hood.
• Storage: Store in a tightly sealed container in a cool, dry place away from light and oxidizing agents.
• Emergency: In case of contact, rinse affected area with plenty of water. Seek medical attention if irritation persists.
Why Choose p-Rosolic Acid (Aurine)?
- High-purity analytical-grade compound.
• Distinct color transition and excellent solubility.
• Reliable for titration, colorimetric, and spectroscopic applications.
• Professionally tested and securely packaged for laboratory safety.
Price in Bangladesh
Available in standard laboratory pack sizes (10 g, 25 g, 100 g, 500 g) at competitive market prices.
Bulk and institutional discounts available for educational, research, and industrial customers.
Where to Buy
p-Rosolic Acid (Aurine) can be purchased from certified laboratory chemical suppliers and analytical reagent distributors across Bangladesh.
Why Buy from M/S Bright Scientific Co.?
- Trusted Supplier: Serving laboratories, educational institutions, and chemical industries.
• Guaranteed Purity: Verified for analytical and indicator-grade performance.
• Affordable Pricing: Competitive rates for both retail and bulk orders.
• Reliable Delivery: Safe, fast, and nationwide supply network.
Contact Information
M/S Bright Scientific Co.
📞 Phone: 01711285976
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