Isophthalic Acid

Description

1. Product Overview

Isophthalic Acid (IPA) is a high-purity aromatic dicarboxylic acid widely used as a critical intermediate in the production of high-performance polymers and resins. It plays a central role in enhancing the durability, chemical resistance, and thermal stability of materials such as unsaturated polyester resins (UPR) and polyethylene terephthalate (PET). The product delivers superior performance in demanding industrial environments, making it indispensable across construction, automotive, and packaging sectors. Its strategic importance lies in enabling manufacturers to produce longer-lasting, higher-quality end products while optimizing cost-efficiency and performance reliability.

2. Key Specifications & Technical Characteristics

• Chemical Composition: C₈H₆O₄ (Benzene-1,3-dicarboxylic acid)
• Purity Level: ≥ 99.7% (Industrial / Polymer Grade)
• Appearance: White crystalline powder or granules
• Odor: Odorless
• Melting Point: ~345°C
• Density: ~1.54 g/cm³
• Moisture Content: ≤ 0.2%
• Particle Size: Uniform, free-flowing for ease of handling and processing
• Solubility: Slightly soluble in water; soluble in organic solvents
• Packaging Options:
  • 25 kg woven bags with PE liner
  • 500 kg / 1000 kg jumbo bags
• Shelf Life: 24 months under dry, sealed storage conditions

3. Core Industrial Applications

Isophthalic Acid is extensively utilized in the production of unsaturated polyester resins (UPR), where it significantly improves corrosion resistance, mechanical strength, and longevity—critical for marine, construction, and infrastructure applications. In the PET resin industry, IPA is used to modify polymer properties, enhancing clarity, flexibility, and barrier performance for high-quality packaging materials.

It is also a key raw material in powder coatings, alkyd resins, and high-performance coatings, delivering superior weatherability and chemical resistance compared to orthophthalic alternatives. Manufacturers prefer IPA due to its ability to extend product lifespan, reduce maintenance costs, and ensure consistent performance under harsh environmental conditions. This translates into improved operational efficiency and reduced total cost of ownership.

4. Competitive Advantages

• High Quality Consistency: Tight purity control ensures stable downstream processing and product performance
• Reliable Supply Chain: Scalable production capacity with dependable global distribution
• Efficient Logistics: Optimized packaging and container loading for cost-effective bulk transport
• Price Competitiveness: Balanced cost-to-performance ratio for industrial-scale procurement
• Enhanced Material Performance: Superior corrosion resistance and durability versus conventional alternatives
• Sustainability Alignment: Supports longer product lifecycles, reducing material waste and replacement frequency
• Technical Support: Comprehensive documentation (COA, MSDS, TDS) and application guidance available

5. Commercial & Supply Information

• Minimum Order Quantity (MOQ): BULK 20 MT
• Loading Capacity: 20–22 MT per 20-ft container depending on packaging format