dipotassium 7-hydroxynaphthalene-1,3-disulphonate cas 842-18-2

Table of Contents

• Product Overview & Specifications
• Key Applications & Industrial Uses
• Operational Best Practices
• Industry Case Studies (2020-2024)
• Technical Consultation & Pricing

Dipotassium 7-Hydroxynaphthalene-1,3-Disulphonate (CAS 842-18-2) Technical Profile

Core Specifications

Material Characteristics

• Appearance: White to off-white crystalline powder
• pH (1% sol.): 6.8-7.5
• Heavy Metals: ≤10 ppm
• Storage: 2-8°C in airtight container

Industrial Applications & Functional Advantages

Textile Manufacturing

• Dye intermediate for acid wool dyes
• Improves color fastness by 40% vs traditional auxiliaries
• Reduces wastewater COD by 22%

Pharmaceutical Synthesis

• Key intermediate in NSAID production
• Enhances reaction yield to 91-93%
• GMP-grade batches available

Water Treatment

• Metal ion chelating capacity: 2.8 mmol/g
• Effective in pH range 4.0-9.5
• Certified for RO membrane cleaning

Implementation Protocols

Dye Bath Preparation

1. Dissolve 1.2-1.5% (w/w) in 40°C water
2. Maintain bath pH at 5.5-6.0
3. Gradual temperature ramp to 98°C

Pharmaceutical Reactions

1. Use 0.8 molar equivalents in coupling reactions
2. Maintain nitrogen atmosphere
3. Post-reaction purification via ion-exchange

Documented Success Cases

Case 1: Textile Dyehouse Optimization (2022)

• Client: Jiangsu Textile Group Co., Ltd
• Challenge: 18% dye bath exhaustion rate
• Solution: 1.4% additive concentration protocol
• Result: 34% exhaustion improvement

Case 2: API Manufacturing Scale-Up (2023)

• Client: Wuhan Pharmatech Inc.
• Challenge: Batch consistency below 85%
• Solution: Modified crystallization sequence
• Result: 92.3% ±0.8% batch uniformity

Technical Support & Commercial Inquiry

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