Isophthalic Acid is an important organic compound that appears as a white powder with the molecular formula C6H4(CO2H)2. Isophthalic Acid has strong heat resistance, hydrolysis resistance, and chemical resistance, with a melting point of 345 ℃ and a boiling point of 415 ℃. It is easily soluble in alcohols and glacial acetic acid. In industry, meta-xylene is mainly used as a raw material to prepare Isophthalic Acid. Isophthalic Acid is widely used and is one of the important raw materials for synthesizing polyester resins. It is widely used in plastic products, fibers, coatings, pesticides, pharmaceuticals, dye industries, and other fields, such as textiles, clothing, building materials, automotive parts, insecticides, drug coating materials, thickeners, emulsifiers, and solvents.
| TECHNICAL SPECIFICATION | |||
| No. | ITEMS | SPECIFICATION | |
| 1 | Appearance | White powder | |
| 2 | Purity(%) | 99.9 | |
| 3 | CAS No. | 121-91-5 | |
| 4 | Melting Point/℃ | 341-343 | |
| 5 | Density/(g/cm3) | 1.507 | |
| 6 | Vapor Pressure/Pa(0.068mmHg,100℃) | 9 | |
| 7 | Autoignition Temperature/℃ | 700 | |
| 8 | Solubility | in water(25℃)/(g/100g） | 0.013 |
| in water(100℃)/(g/100g) | 0.22 | ||
| 9 | Toxicological Effects | Ingestion LD-50(rabbit)/(mg/kg) | 5000 |
| Inhalation LC-50(rabbit)/(mg/L) | 11370 | ||
Isophthalic Acid is mainly used to synthesize polyester resins, such as molding materials, films, insulation materials and coatings. In fiber manufacturing, it can be used to synthesize specific types of polyester fibers, such as high shrinkage fibers and heat-resistant fibers. In the fields of medicine and pesticides, it can be used as a pharmaceutical intermediate, insecticide, or herbicide. It can also be used for synthetic dyes in the textile, printing, and coating industries, providing products with rich colors and durability. Additionally, Isophthalic Acid can be used to manufacture high-performance coatings and adhesives for applications in fields such as automotive, aircraft, and construction.
Chemical Properties: Explosive mixtures will form in air, with an explosive limit of 1.1% to 6.1% by volume. In flames, Isophthalic Acid undergoes thermal decomposition or combustion, releasing highly toxic and irritating gases.
Stability: Isophthalic Acid has strong heat resistance, hydrolysis resistance and chemical resistance. It can maintain stable chemical properties at high temperatures and resist erosion from various chemical substances.
Flammability and Toxicity: Isophthalic Acid is flammable and low toxic, but it releases highly toxic and irritating gases during combustion, so safety should be taken into account during use.
Versatile Applications: Isophthalic Acid is widely used in various fields such as chemical engineering, materials and medicine. For example, plastic products, polyester fibers, dyes, adhesives, insecticides, etc.
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