Purified Terephthalic Acid (PTA) (cas 100 21 0) is an important organic compound, which is in the form of a white powder with a molecular formula of C6H4(CO2H)2. Its self ignition point is 680 ℃ and the ignition point is 384-421 ℃. It has low toxicity and has a certain irritant effect on the skin and mucous membranes. Pure terephthalic acid can dissolve in hot ethanol and alkaline solutions. Purified Terephthalic Acid is obtained through petroleum processing, extraction, and reaction, mainly used to produce polyester, which is a key raw material for the production of chemical fiber products, including polyester fibers (polyester), polyester films, and polyester bottle sheets.
| TECHNICAL SPECIFICATION | |||
| No. | ITEMS | SPECIFICATION | ANALYTICAL METHOD |
| 1 | Appearance | White powder | Visual observation |
| 2 | Acid Value (mg KOH/g) | 675±2 | SH/T1612.2 |
| 3 | 4-CBA + P-Toluic Acid (ppm) | ≤ 180 | SH/T1687 |
| 4 | Fe (ppm) | ≤ 1 | SH/T1612.3 |
| 5 | Heavy Metal (ppm) | ≤ 5 | SH/T1612.3 |
| 6 | Ash (ppm) | ≤ 8 | GB/T7531 |
| 7 | Moisture (Wt. %) | ≤ 0.2 | SH/T1612.4 |
| 8 | B | 1.2±0.3 | SH/T1612.10 |
| 9 | △Y | ≤ 10 | |
| 10 | DMF Color (APHA) | ≤ 10 | GB/T3143 |
| 11 | Average Particle Size (μm) | 115±15 | SH/T1612.8 |
Purified Terephthalic Acid is mainly used in the production of polyester, such as polyester fibers (polyester), polyester films, and polyester bottle chips, among other chemical fiber products. It can also be used as a key raw material for other important chemical products. In other applications, PTA can also be used to produce poly (p-phenylene terephthalamide) (PBT), which is a polymer material with excellent mechanical properties, heat resistance, and electrical characteristics. In addition, it can also serve as a raw material for plasticizers and an intermediate for dyes.
Chemical Stability: Purified Terephthalic Acid is chemically stable at room temperature and pressure, and is not easily decomposed or deteriorated. Can maintain high quality during storage and transportation.
High Purity Requirements: Only high-purity PTA can ensure the quality and performance of polyester products. During the production process, strict refining techniques are required to remove impurities.
Versatile Applications: Not only can it be used to produce traditional products such as polyester fibers, polyester films, and polyester bottle sheets, but it can also be used to produce high-performance polymer materials such as poly (p-phenylene terephthalamide) (PBT), as well as raw materials for chemical products such as plasticizers and dye intermediates.
Environmentally Friendly: The production and use of Purified Terephthalic Acid have a relatively small impact on the environment.
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