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| Terephthalic acid (PTA) is one of the important bulk organic raw materials, which is widely used in various aspects of the national economy such as chemical fibres, light industry, electronics and construction. At the same time, the application of PTA and more concentrated, more than 90% of the world's PTA for the production of polyethylene terephthalate (referred to as polyester, PET). The production of 1 tonne of PET requires 0.85-0.86 tonnes of PTA and 0.33-0.3Chemicalbook4 tonnes of MEG (ethylene glycol). Polyester includes fibre chips, polyester fibres, bottle chips and film chips. In the domestic market, 75% of PTA is used in the production of polyester fibre; 20% is used in the production of bottle-grade polyester, which is mainly applied to the packaging of various beverages, especially carbonated beverages; and 5% is used in film-grade polyester, which is mainly applied to packaging materials, films and tapes. It can be seen that the downstream extension of PTA is mainly polyester fibre. | |||||||||
100-21-0
bosschemical
100-21-0
Terephthalic acid
CAS No.100-21-0
Alias:Terephthalic acid 98%;Terephthalic a;Acide terephtalique;acideterephtalique;acideterephtalique(french);
Molecular formula：C8H6O4
Molecular weight：166.13
Structural formula：
1. Performance and use:
White needle-like crystal or powder. Soluble in alkali solution, slightly soluble in hot ethanol, insoluble in water, ether, glacial acetic acid and chloroform.
Important raw material for the manufacture of polyester resin, film, fibre, insulating paint and engineering plastics etc.
Most of the product is used in the production of polyethylene terephthalate (polyester), which is an important raw material for polyester fibre, film, plastic products, insulating varnish and plasticizers, and is also used in the production of pharmaceuticals, dyes and other products.
Used as a reagent for chromatographic analysis
Used in the manufacture of synthetic resins, acid fibres and plasticisers, etc.
Organic synthesis, determination of residual alkalinity of wool, gas chromatography sweeping agent. Add into polyethylene glycol 200, can separate and analyse fatty acid.
2.Technical indicators:
| Test items | index | test result | |
| Appearance | 白色粉末 | 白色粉末 | |
| Assay | %≥ | 99 | 99.5 |
| Ash | mg/kg≤ | 6 | 0.8 |
| P-Carboxybenzaldehyde | mg/kg≤ | 25 | 12.8 |
| P-toluic acid | mg/kg≤ | 150 | 144 |
| Fe | mg/kg≤ | 1 | 0.01 |
| Heavy metal | mg/kg≤ | 3 | 0.05 |
| Moisture | %≤ | 0.2 | 0.15 |
3. Packaging and storage:
Packaging specification: Packing specification: 25kg/bag, also can be determined according to user's need.
During transportation, it is necessary to protect against sunlight, rain, and high temperatures.
The product should be stored in a cool, dark, ventilated place, away from sources of fire.
4.Safety protection:
Pay attention to labor protection when handling it and avoid contact with skin, eyes, etc.After contact, rinse immediately with plenty of water
Related keywords：
Terephthalic acid
CAS 100-21-0
C9H10O2
