1. Product Overview & Specifications

Quinaldine (CAS 91-63-4) is a heterocyclic organic compound with the molecular formula C₁₀H₉N. It appears as a colorless to pale yellow liquid with a pungent odor, widely used in pharmaceuticals, agrochemicals, and industrial applications.

Key Parameters:

2. Applications of Quinaldine

Pharmaceutical Intermediates

Used in synthesizing antimalarial drugs like Chloroquine and antibacterial agents due to its stable nitrogen heterocycle structure.

Dye Manufacturing

Key precursor for quinoline dyes in textiles and coatings, offering superior lightfastness compared to alternatives.

Corrosion Inhibition

Effective in metal surface treatment at concentrations as low as 0.5-2% in acidic environments.

3. Usage Guidelines & Best Practices

Synthesis Example

Chloroquine Production:
1. Mix Quinaldine (1 mol) with chloroaniline (1.2 mol) in ethanol
2. Catalyze with H₂SO₄ at 60°C for 8hrs
3. Yield: 89-92%

Safety Protocols

• Use PPE (gloves, goggles) during handling
• Store in ventilated area away from oxidizers
• Flash point: 112°C (keep below 30°C)

4. Real-World Case Studies

Case 1: Agrochemical Manufacturer (Germany)

Challenge: Needed stable fungicide intermediate
Solution: Used Quinaldine-based synthesis route
Result: 30% cost reduction vs. pyridine derivatives

Case 2: Electronics Co. (Japan)

Challenge: Copper corrosion in PCB production
Solution: 1.2% Quinaldine additive in etching bath
Result: Equipment lifespan increased by 200%

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