TAHQ CAS 2770-49-2

Name: TAHQ CAS 2770-49-2
Brand: Aure Chemical
Price: 1.00 USD
Availability: InStock
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Synonyms: 1,4-Phenylene Bis(1,3-dioxo-1,3-dihydroisobenzofuran-5-carboxylate); p-Phenylenebis(trimellitate anhydride); p-Phenylene bis(trimellitate) dianhydride; Bis(1,3-dioxo-1,3-dihydroisobenzofuran-5-carboxylic Acid) 1,4-Phenylene Ester; 5,5'-[p-Phenylenebis(oxycarbonyl)]diphthalic anhydride; 1,4-Phenylene Bis(anhydrotrimellitate)

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Product Details

TAHQ CAS 2770-49-2 for Polyimide and Poly(ester imide) Synthesis

1,4-Phenylene bis(1,3-dioxo-1,3-dihydroisobenzofuran-5-carboxylate), also known as p-phenylenebis(trimellitate anhydride) or TAHQ, is a ester-containing aromatic dianhydride monomer used as a structural building block in high-performance polyimide, poly(ester imide) and specialty polymer synthesis. Its para-linked phenylene core, ester linkages and multifunctional anhydride structure make TAHQ relevant to polymer systems where dimensional stability, thermal resistance, dielectric behavior, moisture control and mechanical performance need to be balanced.

TAHQ belongs to the broader category of polyimide dianhydride monomers and is also included in Aure Chemical’s Polyimide Monomers: Diamines and Dianhydrides technical guide. It is often considered in electronic-grade, optical, low-CTE, high-temperature and specialty polyimide material development, depending on the paired diamine, formulation and processing conditions.

Basic Information of TAHQ

Product Name	1,4-Phenylene bis(1,3-dioxo-1,3-dihydroisobenzofuran-5-carboxylate)
Synonym	p-Phenylenebis(trimellitate anhydride)
Abbreviation	TAHQ
CAS Number	2770-49-2
Product Type	Ester-containing aromatic dianhydride monomer
Molecular Formula	C24H10O10
Molecular Weight	458.33 g/mol
Appearance	White to light yellow powder or crystalline solid
Purity	≥ 99%; batch data should be confirmed when quality documentation is available
Main Application	Electronic-grade, optical, low-CTE and high-performance polyimide synthesis
Package	1 kg/bottle, 20 kg/drum, or customized packaging
Documents	SDS, TDS and available product information upon request
Storage	Keep sealed, dry, and away from moisture
Molecular Structure

Key Features in Polyimide Design

Ester-containing aromatic dianhydride structure, relevant to specialty polyimide dianhydride monomers and poly(ester imide) material design.
Para-linked phenylene structure may support dimensional stability and low-CTE polymer design depending on the paired diamine and polymer architecture.
Ester linkages and aromatic anhydride functionality may help balance rigidity, processability and thermal performance in selected polyimide systems.
TAHQ can be considered in electronics and microelectronics polyimide applications where insulation, dielectric behavior and dimensional reliability are important.
Final material properties depend on dianhydride purity, diamine selection, solvent system, imidization conditions and polymer processing method.

Pairing TAHQ with Diamine Monomers

In polyimide synthesis, TAHQ may be evaluated with selected polyimide diamine monomers supply portfolio to design electronic-grade, optical, low-CTE and specialty PI systems. Fluorinated diamines such as TFMB / TFDB CAS 341-58-2 may be considered when optical, dielectric or moisture-related properties are part of the target polymer design.

Ether-containing diamines such as BAPP CAS 13080-86-9 or TPE-Q CAS 3491-12-1 may help adjust processability and film-forming behavior, while rigid aromatic diamines may be selected when dimensional stability and thermal resistance are more important.

Application Context of TAHQ in Polyimide Systems

TAHQ is typically used as a structural dianhydride monomer rather than a finished application material. It is commonly discussed in electronic-grade, optical, low-CTE, high-temperature and specialty polyimide material development, where para-phenylene rigidity and ester-containing dianhydride structure can influence polymer performance.

Electronics and microelectronics polyimide applications – insulation, dielectric behavior and dimensionally stable polymer material design.
Optical and transparent polyimide systems – monomer selection for optical clarity, reduced coloration and film-related polymer design.
Aerospace and high-temperature insulation applications – thermally stable and mechanically reliable polymer environments.
Specialty functional polyimide materials – ester-containing dianhydride selection for advanced polymer research and formulation design.

SDS, TDS and Technical Documentation

Aure Chemical can provide SDS, TDS, typical product information and packaging details for TAHQ CAS 2770-49-2 upon request. Since no batch COA has been provided for this page, final purity, appearance and batch-specific quality data should be confirmed when available before order confirmation.

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Packaging, Logistics & Compliance Capabilities

Aure Chemical provides flexible packaging solutions, compliant logistics arrangements, and controlled storage practices to support laboratory-scale, pilot-scale, and commercial-scale global supply.