Isophthalic acid
Isophthalic acid (CAS: 121-91-5, Formula: C8H6O4) is a dicarboxylic acid with a molar mass of 166.13 g/mol. This white crystalline solid serves as a key intermediate in the chemical industry. Its primary applications lie in the synthesis of polymers, resins, and plasticisers, contributing to the production of various high-performance materials. Isophthalic acid is crucial for creating products that require enhanced thermal stability and chemical resistance.
- IUPAC
- Benzene-1,3-dicarboxylic acid
- Synonyms
- Benzene-1,3-dicarboxylic acid3-(CO2H)2
Polymer Synthesis
Isophthalic acid is a vital monomer used in the production of polyester resins, particularly for unsaturated polyesters and alkyd resins. These polymers find extensive use in coatings, adhesives, and composite materials.
Resin Production
It acts as a modifier in various resin systems, improving properties such as heat resistance, chemical inertness, and mechanical strength in materials like PET (polyethylene terephthalate) copolymers.
Plasticiser Manufacturing
Esters derived from isophthalic acid are employed as plasticisers, enhancing the flexibility and durability of PVC and other polymers for applications in films, cables, and flooring.
Chemical Intermediate
As a versatile building block, it is utilised in the synthesis of diverse organic compounds, including dyes, pharmaceuticals, and performance chemicals, facilitating complex chemical transformations.
| Molecular weight | 166.13 |
|---|---|
| Linear formula | C6H4-1,3-(CO2H)2 |
| Assay | 99% |
| Autoignition temp | 1198 °F |
| Melting point | 341-343 °C(lit.) |
| Protective equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
|---|---|
| Water hazard class (WGK, DE) | 2 |
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 Isophthalic acid used for?
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Isophthalic acid is primarily used as a monomer in the synthesis of polymers such as polyesters and alkyd resins, and as an intermediate in the production of plasticisers and other organic chemicals.
What are the CAS number and formula for Isophthalic acid?
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The CAS number for Isophthalic acid is 121-91-5, and its linear formula is C6H4-1,3-(CO2H)2, with a molecular formula of C8H6O4.
What grade and purity does Tech Serve Solutions supply for Isophthalic acid?
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Tech Serve Solutions supplies Isophthalic acid with a minimum assay of 99%. This product is typically supplied for research and industrial applications and is not represented as USP, BP, EP, or pharmacopoeia grade.
How should Isophthalic acid be handled safely?
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Handling Isophthalic acid requires appropriate personal protective equipment, including eyeshields and gloves. A type N95 (US) or type P1 (EN143) respirator filter should be used if dust is generated. Refer to the Safety Data Sheet for comprehensive handling information.
Is Isophthalic acid a controlled substance?
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Based on the provided data, Isophthalic acid is not listed as a controlled substance.
How is Isophthalic acid packed and exported?
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Isophthalic acid is carefully packed to ensure product integrity during transport. Tech Serve Solutions is experienced in exporting fine chemicals globally, adhering to all relevant shipping regulations.
How can I request a quote or sample for Isophthalic acid?
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To request a quote or a sample of Isophthalic acid, please contact our sales department through the website or by phone, providing your specific requirements.
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