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Terephthalic acid PTA

  • Terephthalic acid PTA
  • Terephthalic acid PTA
  • Terephthalic acid PTA
  • Terephthalic acid PTA

Terephthalic acid PTA

Terephthalic acid is a key organic dicarboxylic acid. It features stable chemical properties and strong reactivity. Mainly used to produce PET resin, polyester fiber and plastic products. Widely applied in chemical, textile, packaging and plastic industries worldwide.
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Email: victoria@juntengchem.com

Product Parameters

CAS.
100-21-0
Product NameTerephthalic acid
Molecular formulaC8H6O4
Packaging specifications:25kg/bag



Basic Properties

1. Physical Properties 

- Appearance & Odor: White crystalline powder or fine granular solid, odorless, non-hygroscopic, non-corrosive, free-flowing under normal storage conditions.

- Melting Point: >300 °C

- Boiling Point: Approximately 214.3 °C

- Density: 1.58 g/cm³ at 25 °C.

- Flash Point: 260 °C

- Solubility: Extremely slightly soluble in water (~0.017 g/L at 25 °C); slightly soluble in hot ethanol and methanol; insoluble in ether, acetone, benzene, and most common organic solvents .

- Physical State: Stable solid at room temperature and atmospheric pressure, non-flammable, non-efflorescent.

2. Chemical Properties 

- Chemical Structure: Aromatic dicarboxylic acid with two symmetric carboxyl groups (-COOH) attached at the 1,4 positions of the benzene ring; high molecular symmetry and structural stability.

- Stability: Chemically stable under normal temperature, pressure, and dry storage conditions; resistant to light and air oxidation; incompatible with strong oxidizing agents, strong bases, and reducing agents; avoids high-temperature humid environment to prevent mild hydrolysis.

- Polymerization Reactivity: The most core chemical property of TPA; undergoes efficient polycondensation reaction with diols (ethylene glycol, propylene glycol) to produce high-molecular-weight polyester resins (PET, PBT).

- Acidity: Weak organic acid; pKa1 = 3.51, pKa2 = 4.82 (25 °C); reacts with strong alkalis to form soluble terephthalate salts, widely used in dyeing and wastewater treatment



Main Applications

1. Polyester Fiber & Textile Industry – Dominant Application

TPA is the fundamental raw material for producing purified terephthalic acid polyester (PET) and polyester fibers. It polymerizes with MEG to form high-strength, wear-resistant and dimensionally stable polyester yarns, widely applied in apparel, home textiles and industrial textiles. It ensures high purity and stable polymerization activity, supporting large-scale textile manufacturing.

2. Packaging PET Resins & Plastic Products

As a core monomer for food-grade PET resin, TPA produces lightweight, transparent and pressure-resistant plastic packaging materials. It is extensively used in beverage bottles, food containers, cosmetic packaging and plastic films, featuring excellent safety, chemical stability and barrier properties that meet global food contact standards.

3. Engineering Plastics & High-Performance Polymers

TPA is applied in the synthesis of high-performance engineering plastics including PBT, PCT and thermoplastic polyester elastomers. It effectively improves material heat resistance, mechanical strength and low-temperature toughness, making these plastics ideal for automotive parts, electronic components and precision industrial accessories.

4. Coatings, Paints & Adhesives

It serves as a key raw material for saturated polyester resins and powder coating resins. TPA-based coatings deliver superior hardness, weather resistance, adhesion and anti-corrosion performance, widely used in industrial equipment, metal surfaces, architectural coatings and high-temperature resistant adhesive formulations.

5. Industrial & Specialized Derivatives

TPA is a critical intermediate for manufacturing terephthalate derivatives, plasticizers and chemical additives. It is also used in the production of insulating materials, composite materials and chemical auxiliaries, offering stable chemical properties and wide compatibility for diversified industrial processing.


Safety Precautions

Safety & Handling Instructions

  • Operate in well-ventilated work areas; avoid fine TPA dust accumulation to prevent dust explosion risks and respiratory irritation.

  • Avoid direct skin, eye, and inhalation exposure; do not ingest TPA powder or dust during operation.

  • Wash hands and exposed skin thoroughly after handling; prohibit eating, drinking, and smoking in working zones.

  • Handle containers gently to prevent dust spillage; avoid static buildup and contact with incompatible reactive substances.

Personal Protective Equipment (PPE)

  • Eye/Face: Chemical safety goggles to prevent TPA dust irritation or residual damage to ocular tissues.
  • Hands: Light-duty chemical-resistant gloves to avoid skin contact and persistent irritation.
  • Body: Disposable or impervious work clothing to prevent dust adhesion and skin exposure.
  • Respiratory: NIOSH-approved dust respirator for poor ventilation, large-scale handling or dust-heavy operations.


Company Profile

Junteng Chemical is a professional chemical raw materials trading company dedicated to providing customers with one-stop procurement services. Through strict supplier, supply chain, and after-sales management, the company ensures that product quality, transportation, and use meet customer needs. Furthermore, the company's technical team offers customized solutions and support services free of charge.

 

The company has projects in the pharmaceutical, pesticide, petrochemical, construction, food additives, wastewater treatment, adhesives, inks, paints, coatings, plastic and rubber processing, detergent raw materials, fertilizer and textile mills, and more. Junteng Chemical sources products of stable and reliable quality, collaborating with domestic and international companies such as Luxi Group, Weiyuan Chemical, Qilu Petrochemical, Dongying Lihuayi, Yanshan Petrochemical, Sinopec, Shijiazhuang Refinery, Qingdao Petrochemical, Sailboat, Dow Chemical, BASF, South Korea, Taiwan, and Saudi Arabia. Our stable supply, superior product quality, and mature logistics have earned us a wide clientele. We look forward to collaborating with all of you for a mutually beneficial future.

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Company advantages

1

One-Stop Procurement
Platform

We integrate resources across all productcategories, including organic solvents,resins and rubbers, and inorganicchemicals,and strictly control suppliers.supply chains, and after-sales processes toensure stable quality, efficienttransportation,and worry-free use,simplifying your procurement process.

2

Professional Team TechnicalEmpowerment

Equipped with an experienced technicalteam, we provide free personalizedsolutions and professional technicalsupport to customers in varlous industrie,such as pharmaceuticals, petrochemicals,coatings and inks, and sewage treatment,.helping you solve problems and improveefficiency.

3

Global supply ChainSecurity

We work with top domestic and foreignchemical giants such as Luxi Group, QiluPetrochemical, Sinopec, BASF of Germany,and Dow of the United States to establisha stable and reliable high-quality supplynetwork and a mature logistics system toensure timely and safe delivery of
products.

4

Deep Win-Win CooperationConcept

Adhering to the concept of "integrity.immediate action, professionalism,innovation and win-win" and taking"customer success and altruism" as ourmission, we are committed to establishinglong-term strategic partnerships andcreating a better future through excellentproducts and services.

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