Terephthalic Acid 99.99%
Terephthalic Acid (TA)
IUPAC: 1,4-benzenedecarboxylic acid
Terephthalic Acid (TA) is used to manufacture polyester coatings resins for use in the formulation of general metal, appliance, automotive, industrial maintenance, and coil coatings. The primary application for TA is in combination with PG Glycol in polyester powder coating resins. It has also been used in unsaturated polyesters for fiberglass-reinforced plastics applications.
The aromatic ring of TA imparts excellent hardness and corrosion and stain resistance to coatings resins and unsaturated polyesters. TA has moderate solubility in molten glycols which can increase synthesis times, and it imparts moderate solubility to resins.
TA is available in quantities.
| Name | Terephthalic Acid | |||||||
| Empirical Formula | C8H6O4 | |||||||
| Molecular Weight | 166.13 g/mol | |||||||
| Appearance | White Powder | |||||||
| Odor | Odorless | |||||||
| 4-Carboxybenzaldehyde (4-CBA) | 200 ppm max. | |||||||
| Volatiles | 0.12 wt % max. | |||||||
| Cobalt | 10 ppm max. | |||||||
| Melting Point | 300 °C (572 °F) | |||||||
| Boiling Point | Decomposes | |||||||
| Acid Number (mg KOH/g) | 675 | |||||||
| Solubility | 15 mg/L | |||||||
| Solubility in Water | Negligible | |||||||
| Specific Gravity | 1.51 | |||||||
| Flash Point | ||||||||
| Cleveland Open Cup | 271 °C (519.8 °F) | |||||||
| Autoignition Temperature | 496 °C (924.8 °F) | |||||||
| Numbers | ||||||||
| CAS No. | 100-21-0 | |||||||
Applications
Adhesives/sealants-B&C, Architectural coatings, Auto OEM, Automotive , Coil coatings , General industrial coatings , Graphic arts , Intermediates Paints & coatings , Protective coatings , Water packaging , Wind energy
Key Attributes
Excellent weathering , Good chemical and stain resistance , Good hardness/flexibility balance , Ideal glass transition temperature range , Outstanding powder flow and fluidization characteristics
NTR Chemical