Terephthalic acid
Terephthalic acid (CAS: 100-21-0, C8H6O4) is a dicarboxylic acid with a molar mass of 166.13 g/mol. It is a white crystalline solid. A key industrial chemical, it serves as a vital precursor in the production of polyesters, most notably polyethylene terephthalate (PET), which is widely used in bottles, films, and fibres. It is also used in the synthesis of plasticizers and other organic compounds.
- IUPAC
- Benzene-1,4-dicarboxylic acid
- Synonyms
- Benzene-1,4-dicarboxylic acid4-Carboxybenzoic acidp-Phthalic acid
Polyester Production
Terephthalic acid is the primary monomer for manufacturing polyethylene terephthalate (PET). PET is extensively used in the production of beverage bottles, food packaging, synthetic fibres for textiles, and industrial films due to its strength and clarity.
Plasticizer Synthesis
It is utilised in the synthesis of certain plasticizers, which are additives that increase the flexibility and durability of plastics, particularly PVC.
Organic Synthesis Intermediate
As a difunctional aromatic compound, terephthalic acid serves as a versatile building block in various organic synthesis pathways for creating more complex molecules and speciality chemicals.
| Molecular weight | 166.13 |
|---|---|
| Linear formula | C6H4-1,4-(CO2H)2 |
| Assay | ≥98.0% |
| Grade | purum |
| Vapour pressure | <0.01 mmHg (20 °C) |
| Autoignition temp | 925 °F |
| Melting point | >300 °C(lit.) |
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Terephthalic Acid used for?
+
Terephthalic acid is primarily used as a key intermediate in the production of polyesters like polyethylene terephthalate (PET) for bottles and fibres, and also in the synthesis of plasticizers and other organic compounds.
What are the CAS number and formula for Terephthalic Acid?
+
The CAS number for Terephthalic Acid is 100-21-0 and its molecular formula is C8H6O4 (or C6H4(CO2H)2).
What grade and purity does Tech Serve Solutions supply?
+
Tech Serve Solutions supplies Terephthalic Acid in 'purum' grade with an assay of ≥98.0%. This product is intended for laboratory and industrial use; TSS does not represent it as USP, BP, or EP grade.
How should Terephthalic Acid be handled?
+
Handling Terephthalic Acid requires appropriate personal protective equipment, including a dust mask (type N95 US recommended), eyeshields, and gloves. Avoid dust formation and accumulation.
Is Terephthalic Acid a controlled substance?
+
The provided data does not indicate that Terephthalic Acid (CAS: 100-21-0) is a controlled substance.
How is Terephthalic Acid packed and shipped?
+
Tech Serve Solutions exports chemicals globally. Specific packing and shipping details for Terephthalic Acid are available upon request, adhering to all relevant regulations.
How can I request a quote or sample for Terephthalic Acid?
+
To request a quote or a sample of Terephthalic Acid, please contact our sales team via the website or direct inquiry channels.
▶ Related products
1-(2-Fluorobenzyl)piperazine
C11H15FN2
Chemical Synthesis
1-(2-Fluorophenyl)biguanide hydrochloride
Chemical Synthesis
1-(2-Fluorophenyl)cyclopropanecarboxylic acid
C10H9FO2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine
C10H13FN2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine monohydrochloride
C10H13FN2 · HCl
Chemical Synthesis
1-(2-Furoyl)-1H-benzotriazole
C11H7N3O2
Chemical Synthesis
1-(2-Furoyl)piperazine
C9H12N2O2
Chemical Synthesis
1-(2-Hydroxy-5-methylphenyl)-3-phenyl-1,3-propanedione
Chemical Synthesis
▶ Explore more
3-Methyl-1,5-di-p-tolyl-1,4-pentazadiene
Chemical Synthesis
3-Methyl-1,5-pentanediol
Chemical Synthesis
3-Methyl-1-(2-methylphenyl)-1H-pyrazol-5-amine
C11H13N3
Chemical Synthesis
3-Methyl-1-(3′-sulfoamidophenyl)-5-pyrazolone
C10H11N3O3S
Chemical Synthesis