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Terephthalic acid

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Terephthalic acid Specification

Shape
Crystalline

Application
Used in the production of polyester (PET), resins, plasticizers, chemical fiber, coatings, pharmaceuticals

Appearance
White crystalline powder

Refractive Rate
1.650 (calculated)

CAS No
100-21-0

Usage
Intermediate for PET resin and polyester fiber production

Ingredients
Terephthalic acid

HS Code
29173600

Smell
Odorless

Physical Form
Powder

Density
1.64 Gram per cubic centimeter(g/cm3)

Structural Formula
(See C8H6O4, benzene-1,4-dicarboxylic acid structure)

Purity
>99%

Ph Level
4.0 - 4.5 (saturated solution)

Solubility
Slightly soluble in water, soluble in alkalis

Grade
Industrial Grade

Poisonous
Non-poisonous

Shelf Life
Stable if properly stored

Properties
White, odorless crystalline powder; Stable under normal conditions; Slightly soluble in water; Strong acidic character

Molecular Weight
166.13 g/mol

Storage
Store in a cool, dry, well-ventilated area away from incompatible substances

EINECS No
202-830-0

Molecular Formula
C8H6O4

Taste
Odorless

Melting Point
>300C (sublimes)

Product Type
Organic Compound

Packing
25 kg/50 kg bags or as specified by customer

Particle Size
Typically 25-150 microns

Vapor Pressure
Negligible at 25°C

Stability
Stable under normal temperatures and pressures

Boiling Point
Not applicable (decomposes before boiling)

Flash Point
>300°C (closed cup, decomposes)

Compatibility
Incompatible with strong oxidizers and bases

Hazard Class
Not classified as hazardous under GHS

pKa
3.51, 4.82 (for carboxylic acid groups)

Autoinflammability
Not self-igniting

UN Number
Not regulated

About Terephthalic acid

ApplicationIt is mostly used in the production of polyethylene terephthalate (polyester), which is an important raw material for polyester fiber, film, plastic products, insulating paint and plasticizer.

StorageStored in a dry and ventilated warehouse.

High-Quality Intermediate for Polyester Industry

Terephthalic acid serves as a crucial raw material in the manufacturing of polyethylene terephthalate (PET) resin and polyester fibers. Its high purity and stable nature under normal conditions make it a preferred choice for manufacturers seeking consistent performance and product quality.

Safe Handling and Storage

This substance is non-poisonous, non-self-igniting, and stable when kept in a cool, dry environment away from strong oxidizers and bases. Thanks to its negligible vapor pressure and non-hazardous classification, Terephthalic acid is easy and safe to store in standard industrial settings.

Versatile Industrial Applications

Beyond its primary use in PET and fiber production, Terephthalic acid is employed in the creation of resins, plasticizers, chemical fiber, coatings, and even in pharmaceuticals. Industrial users benefit from its effectiveness, reliability, and compatibility with a range of processes.

FAQ's of Terephthalic acid:

Q: How is Terephthalic acid commonly used in industry?

A: Terephthalic acid is primarily an intermediate in the production of polyethylene terephthalate (PET) resin and polyester fibers, but it is also used to manufacture plasticizers, coatings, resins, chemical fibers, and pharmaceuticals.

Q: What is the recommended storage condition for Terephthalic acid?

A: It should be stored in a cool, dry, and well-ventilated area, away from incompatible substances such as strong oxidizers and bases, to ensure stability and product longevity.

Q: When is Terephthalic acid considered hazardous?

A: Under the Globally Harmonized System (GHS), Terephthalic acid is not classified as hazardous, provided it is handled and stored according to standard industrial practices.

Q: Where is Terephthalic acid manufactured and exported from?

A: It is widely manufactured, exported, and supplied by chemical producers in China and distributed globally for industrial use.

Q: What benefit does Terephthalic acid offer for PET and polyester production?

A: Its high purity, strong acidity, and stability under normal conditions enable efficient, high-yield production of PET resins and polyester fibers with consistent material properties.

Q: How does the process of converting Terephthalic acid to PET resin work?

A: Terephthalic acid reacts with ethylene glycol in a condensation polymerization process, producing PET resin, which can then be formed into fibers, films, or containers.

Q: What precautions should be taken during the handling of Terephthalic acid?

A: Ensure good ventilation, avoid contact with incompatible materials, and handle the powder carefully to minimize dust. Always follow proper industrial hygiene practices during use.

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