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[Chemical Knowledge]:What are the role and uses of PTA

terephthalic acid (PTA) is an organic compound, a white needle-like crystal or powder, slightly soluble in hot ethanol, insoluble in water, ether, glacial acetic acid and chloroform, also known as p-Phthalic acid is the most productive dicarboxylic acid, mainly made from p-xylene, and is the main raw material for the production of polyester. Solid at room temperature. Heating does not melt, sublimation above 300 ℃. If heated in a closed container, it can melt at 425 ℃. It is insoluble in water at room temperature.

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Eight Functions and Uses of Terephthalic Acid (PTA)

1. Manufacture of Polyester Resin, Film, Fiber, Insulating Paint, Engineering Plastics, etc

2. Used to produce polyethylene terephthalate (polyester)

3. Used as chromatographic reagent

4. Used to make synthetic resins, acid fiber forming and plasticizers.

5. Used as dye intermediate

6. Used as a carrier in coatings

7. Used as a raw material for the manufacture of terephthalic acid plasticizers, such as dioctyl terephthalate and dibutyl terephthalate

8. Used as a filler for some military smoke bombs

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