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Isophthalic acid CAS 121-91-5 IPA

Chemical name: Isophthalic acid

Synonymous names: 1,3-dicarboxybenzene;

benzene-1,3-dicarboxylate;

m-benzenedicarboxylicacid;

CAS No: 121-91-5

EINECS No: 204-506-4

Molecular formula: C8H6O4

Content: ≥99.9%

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Structural formula：

Product Description：

Item	Specification	Result
Appearance	White powder, No impurity	White powder, No impurity
Content,%	99.90	99.95
Ash content, mg/kg	≤15	9
3-CBA content，mg/kg	≤25	2
Acid value，mgKOH/g	<1.0%	<1.0%
Heavy metal (measured by Pb)	675±2	676
Moisture ,%	≤0.10	0.05
5g/100ml DMF chroma	≤10	9
Fe mg/kg	≤2.0	0.4
Total metal，mg/kg	≤10	2.0
COA TDS MSDS Please contact [email protected]

Isophthalic acid has outstanding heat resistance, hydrolysis resistance and chemical resistance. It is suitable for polymer production, special solvents, plasticizers, high-end polymers and a series of products.

Application areas and used::

1.Polymer production

It is a key ingredient in the production of polyester fibers such as polyester and raw materials for plastics. Many important industrial materials such as polyester resin, PET copolymer resin and alkyd resin use isophthalic acid as the starting raw material.

2.Special applications

In addition to its wide application in polymer production, isophthalic acid can also be used as an intermediate for colorants, catalysts and surfactants.

3. Unsaturated polyester resin and PET copolymer resin

Isophthalic acid is an indispensable raw material in the production of unsaturated polyester resin and PET copolymer resin. These materials are widely used in the automotive, construction, electronics and other industries, providing a reliable foundation for the manufacture of precision, complex high-temperature-resistant insulating parts and impregnated laminated materials.

4. Synthesis of new materials

Isophthalic acid is also an important raw material for the synthesis of new materials. For example, polyallyl isophthalate (DAIP) resin, diethyl isophthalate (DEIP), a special solvent used in the production of toluene diisocyanate, and an additive with good compatibility for a variety of resins. Plasticizer diisooctyl isophthalate, etc.

5. Other high-end applications

In addition, isophthalic acid is also used to prepare high-end materials such as light stabilizers, polybenzimidazole adhesives, and polyphenylene phthalamide (PMIA) aramid.

Packaging specifications:

25KG/bag, packaging can also be customized according to customer requirements.

Storage conditions:

Need to be sealed and stored in a cool, dry place. stored at room temperature.

To obtain Isophthalic acid COA, TDS, and MSDS, please contact [email protected]