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Terephthalic acid

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CAS No.:

100-21-0

Port:

Qingdao

Packaging:

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Price valid (until):

2024-02-18

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Suntechemical Supply

Company Type:

Trader

Location:

China

Qualification:

Main Products:

Detergent Chemicals,Feed Additives,Water Treatment Chemicals,Industrial Chemicals,Fertilizer Chemicals,Other Chemicals

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Product Description
Seller Information
Inquiry History

Description

Product Detail

Terephthalic acid (CAS 100-21-0) is a white crystalline solid that is commonly used in various industries. It has a basic structure consisting of a benzene ring with two carboxylic acid groups attached. This compound is sparingly soluble in water, but it can dissolve in organic solvents such as acetone and ethanol. Terephthalic acid has a melting point of 300-305 degrees Celsius and a boiling point of 402 degrees Celsius. It is a stable compound that does not decompose easily under normal conditions.

Applicable Fields
Terephthalic acid is primarily used in the production of polyester fibers and polyethylene terephthalate (PET) resins. In the textile industry, it is used to make polyester fabrics, while in the packaging industry, it is used to produce PET bottles and containers. The mechanism of action of terephthalic acid in these applications involves its ability to react with ethylene glycol to form PET, which can then be processed into various products.

Storage Conditions
Store in a cool, dry place.

Acide terephtalique; acideterephtalique; acideterephtalique(french); benzene-1,4-dicarboxylic acid; Benzene-p-dicarboxylic acid; Caffeic acid;

Acide terephtalique;acideterephtalique;acideterephtalique(french);Kyselina tereftalova;Kyselina terftalova;kyselinatereftalova;kyselinatereftalova(czech);nsc36973

Certificates

Basic Info

Product Name:

Terephthalic acid

Other Name:

1,4-Benzenedicarboxylic acid;Terephthalic acid;p-Benzenedicarboxylic acid;p-Phthalic acid;WR 16262;p-Dicarboxybenzene;p-Carboxybenzoic acid;TPA;1,4-Dicarboxybenzene;4-Carboxybenzoic acid;NSC 36973;TA 33LP;QTA;Amoco TA 33;S-LOP;TPA (terephthalic acid);PTM 6633;211863-90-0;211863-92-2;2088100-81-4

CAS No.:

100-21-0

Molecular Formula:

C8H6O4

InChIKeys:

InChIKey=KKEYFWRCBNTPAC-UHFFFAOYSA-N

Molecular Weight:

166.13

Exact Mass:

166.13

BRN:

1909333

EC Number:

202-830-0

UNII:

6S7NKZ40BQ

ICSC Number:

0330

NSC Number:

36973

DSSTox ID:

DTXSID6026080

Color/Form:

Needles|White crystals or powder

HScode:

2917361100

Categories:

Plastic Rubber Chemicals

Characteristics

PSA:

74.6

XLogP3:

Appearance:

White Crystalline Powder

Density:

1.51 g/cm³

Melting Point:

402 °C (sublm)

Boiling Point:

>572°F (sublimes)

Flash Point:

260°C

Refractive Index:

1.648

Water Solubility:

slightly soluble in water (0,017 g/L at 25°C)

Storage Conditions:

0-6°C

Vapor Pressure:

<0.01 mm Hg ( 20 °C)

Explosive limit:

Can explode during preparation.

Henrys Law Constant:

Henry's Law constant = 3.9X10-13 atm-cu m/mole at 25 °C (est)

Dissociation Constants:

The dissociation constants pK1 and pK2 for terephthalic acid at 25 °C are 3.54 and 4.46, respectively.

Experimental Properties:

Sublimes at 402 °C|Hydroxyl radical reaction rate constant = 1.2X10-12 cu cm/molec-sec at 25 °C (est)

Air and Water Reactions:

Insoluble in water.

Reactive Group:

Acids, Carboxylic

Reactivity Profile:

TEREPHTHALIC ACID is a carboxylic acid. It donates hydrogen ions if a base is present to accept them. This "neutralization" generates substantial amounts of heat and produces water plus a salt. Insoluble in water but even "insoluble" carboxylic acids may absorb enough water from the air and dissolve sufficiently in it to corrode or dissolve iron, steel, and aluminum parts and containers. May react with cyanide salts to generate gaseous hydrogen cyanide. Will react with solutions of cyanides to cause the release of gaseous hydrogen cyanide. Flammable and/or toxic gases and heat are generated by reaction with diazo compounds, dithiocarbamates, isocyanates, mercaptans, nitrides, and sulfides. React with sulfites, nitrites, thiosulfates (to give H2S and SO3), dithionites (SO2), to generate flammable and/or toxic gases and heat. Reaction with carbonates and bicarbonates generates a harmless gas (carbon dioxide) but still heat. Can be oxidized by strong oxidizing agents and reduced by strong reducing agents. These reactions generate heat. May initiate polymerization reactions; may catalyze (increase the rate of) chemical reactions.

Autoignition Temperature:

925 °F (496 °C)|496 °C

Physical Dangers:

Dust explosion possible if in powder or granular form, mixed with air.

See More Terephthalic acid Properties 

Hazard Identification

Classification of the substance or mixture

Not classified.

GHS label elements, including precautionary statements

Precautionary statement(s)
Pictogram(s)	No symbol.
Signal word	No signal word
Hazard statement(s)	none
Prevention	none
Response	none
Storage	none
Disposal	none

Other hazards which do not result in classification

no data available

Handling and Storage

Precautions for safe handling

NO open flames. Closed system, dust explosion-proof electrical equipment and lighting. Prevent deposition of dust. Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.

Conditions for safe storage, including any incompatibilities

Separated from strong oxidants.

See More Terephthalic acid Safety Data Sheet 

Seller Information

Business Type:
Trader

Main Products:
Detergent Chemicals,Feed Additives,Water Treatment Chemicals,Industrial Chemicals,Fertilizer Chemicals,Other Chemicals

Location:
C5, Aocheng Commercial Plaza, Nankai District, Tianjin, China

Payment Terms:
TT against copy of documents,L/C,TT against B/L draft before shipment,100% TT in advance

Average lead Time:
25

Total Annual Revenue:
$2.5 million-$5 million

Total Employees:
11-50

Year of Establishment:
2023

Suntechemical locates in Tianjin which is a professional supplier of fine chemicals. We are manufacturer and trader.Since 2001, we have been acting as a leading supplier of specialty and fine chemicals in China.We handle a wide range of chemicals, including detergent raw materials, food additives, water treatment chemicals as well as textile and tanning making chemicals. Relying on the professional supply chain management ability, we have established a stable cooperative relationship with domestic and foreign famous company such as DOW CHEMICALS, BASF, HUNTSMAN, TOSOH, DELAMINE, Yangzi Petrochemicals BASF, SINOPEC Group ,Shanghai Yuanbang Chemical Industry, Jiangsu Sanmu etc.
Suntechemical has experienced staffs engaged in chemical production, technology R&D, sales and high-quality after-sales service which set up a good reputation inside and outside the industry . We have professional warehouses in Tianjin, Shandong, Shanghai, Nanjing and other places with year-round stocking which allow timely delivery. We dedicate on providing high quality product and best service for customers, and building successful business relationship with clients all around the world.

Inquiry History

12 Inquiries

Country	Product	Purchase Quantity	Date Posted
Vietnam	The Best Price Pta 99.9% Purified Terephthalic Acid 100-21-0	48 TON	Jun 7, 2023
Pakistan	Pta Purified Terephthalic Acid Hengli Brand	400000 KG	Aug 8, 2025
India	Terephthalic Acid	20.00 TON	Jan 26, 2025
India	Terephthalic Acid	25.00 KG	Dec 9, 2024
Bangladesh	terephthalic acid 99%	1 KG	Sep 3, 2025
Thailand	Terephthalic Acid	1 KG	Aug 21, 2025
Poland	Terephthalic acid	100 MT	Aug 13, 2025
Uzbekistan	Pure Terephthalic acid (PTA)	100 MT	Oct 14, 2023
Indonesia	Pure Terephthalic acid (PTA)	1 TON	Jul 13, 2023
Bangladesh	Terephthalic acid	120 MT	May 17, 2025
Austria	Purified Terephthalic Acid PTA	500 MT	Nov 1, 2023
Uzbekistan	Pure Terephthalic acid (PTA)	200 MT	Aug 21, 2023

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