Purified Terephthalic Acid

Origin: Taiwan
CAS Number: 100-21-00
HS Code: 291736

IUPAC Name: benzene-1,4-dicarboxylic acid
Molecular Formula: C8H6O4
Molecular Weight (g/mol): 166.1300
Synonyms & Trade Names: Purified terephthalic acid; PTA; 1,4-Benzenedicarboxylic acid
Purity / Assay (%): 99.5% min
Grade / Quality Level: Industrial Grade

Physical Form: Solid
Concentration: Pure substance
Appearance / Color: White to off-white solid
Odor: Odorless
Melting Point (°C): 300.0000
Boiling Point (°C): >300
Density (g/cm³): 1.5430
Solubility in Water: Slightly soluble
Signal Word: Warning
GHS Hazard Class: Skin sensitizer; Reproductive hazard
H-Statements: H317|H361
P-Statements: P201|P261|P272|P280|P308+P313
REACH Status: Registered
Drug Precursor Status: Non-precursor
Storage Class (GHS): 13
Storage Conditions: Cool, dry place; avoid dust

Technical Document

BRIEF OVERVIEW
purified terephthalic acid (PTA) is a raw material which is used in the production of high-performance multipurpose plastics like polybutylene terephthalate (PBT), polyethylene terephthalate (PET), polytrimethylene terephthalate (PTT) and even forms of bioplastics. It also finds its vast usage in the production of polyester fibers in the global market. They are used to manufacture polyester coating resins for manufacturing general metal, appliances, automotive, industrial maintenance even coil coatings.

MANUFACTURING PROCESS
At first step of production process, Crude Terephthalic Acid (CTA) is produced through catalytic liquification and oxidation among air, paraxylene (as main raw material) and acetic acid (as solvent) and then the CTA is hydrogenated to remove the impurities and then is separated and dried to produce fibre grade PTA.

Purified Terephthalic Acid

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Technical Document