Introduction
Top Grade Isophthalic Acid for Industrial by leading China manufacturer Shanshan is a premium dicarboxylic acid used as a key monomer in the synthesis of high-performance polymers. As a highly stable Organic Intermediate Isophthalic Acid for Industrial, this colorless crystalline solid CAS 121-91-5 features a precise melting point range of 235-240°C. By incorporating High Grade Isophthalic Acid for Industrial into resin formulations, manufacturers can significantly enhance the hydrolytic stability, mechanical toughness, and chemical resistance of their end products. Shanshan ensures that every batch of this refined aromatic acid meets strict purity standards, making it an essential component for producing durable unsaturated polyester resins (UPR) and specialized surface coatings that must perform under extreme environmental conditions.
Product Parameters
|
Chemical Name
|
Isophthalic acid
|
|
Alias
|
1,3-Benzenedicarboxylic Acid; m-Phthalic Acid
|
|
Chemical Formula
|
C8H6O4
|
|
CAS Number
|
121-91-5
|
|
Molecular Weight
|
~166.13 g/mol
|
|
Appearance
|
Colorless crystalline solid.
|
|
Melting Point
|
~235-240°C.
|
|
Boiling Point
|
~452°C.
|
|
Solubility
|
Limited in water; dissolves well in organic solvents.
|
|
Density
|
~1.40 g/mL.
|
|
Vapor Pressure
|
Increases with temperature.
|
|
Chemical Stability
|
Relatively stable; may undergo reactions under extreme conditions.
|
Core Product Advantages
● Supply Chain Reliability
Leveraging Shanshan’s 30-year industrial heritage and 53.1 billion RMB annual sales volume, we ensure consistent inventory levels and price stability for large-scale procurement.
● Exceptional Chemical Purity
With a guaranteed purity of over 99%, our PIA minimizes side reactions during polymerization, resulting in resins with superior clarity and reduced yellowing.
● Enhanced Material Durability
The meta-structure of our isophthalic acid provides better water and chemical resistance compared to standard phthalic anhydride, extending the lifecycle of downstream composites.
● Global Logistics Expertise
Strategically located near Ningbo Port, our export team manages the entire documentation process for seamless delivery to Southeast Asia, Europe, and the Americas.
Primary Application Scenarios
- Fiberglass Reinforced Plastics FRP
Essential for producing high-strength marine hulls, chemical storage tanks, and corrosion-resistant piping where structural integrity is non-negotiable.
- Advanced Coating Systems
Acts as a primary component in high-end powder coatings and coil coatings, providing the finished surface with excellent weatherability and impact resistance.
- Electrical Insulation Materials
Used in the production of high-performance film-grade polyester and laminates that require strict dimensional stability under thermal stress.
- Specialty Chemical Synthesis
Serves as a high-purity intermediate for plasticizers and pharmaceutical synthesis, where low odor and consistent crystalline form are mandatory.
Industrial Significance
In the modern chemical landscape, the transition from standard phthalic resins to isophthalic-based systems marks a shift toward durability. Top Grade Isophthalic Acid for Industrial allows for the creation of lighter yet stronger composite materials. This efficiency not only reduces raw material waste but also enhances the environmental resistance of industrial infrastructure, making it an indispensable asset in sustainable engineering.
FAQ
Q:What is the recommended storage environment for PIA?
A: To maintain 99% purity and prevent clumping, Isophthalic Acid should be stored in a cool, dry, and well-ventilated warehouse. It must be kept away from fire sources, strong oxidizers, and direct sunlight. Ensure the packaging remains sealed until use to avoid moisture absorption.
Q:Can I request a sample for testing?
A: Yes, we provide samples for confirmation before before moving to full-scale commercial orders.
