Description

1,2-Dihydro-3,4,5,6-Tetraphenylphthalic Anhydride is a specialized aromatic anhydride derivative characterized by its unique tetraphenyl-substituted structure. This compound serves as a critical high-performance intermediate in advanced material synthesis, offering enhanced thermal stability and tailored reactivity. It is primarily sought by R&D and production teams in the polymer, pharmaceutical, and specialty chemical industries for developing novel functional materials and complex organic molecules.

Application

• Polymer Chemistry: As a key monomer or curing agent for the synthesis of high-performance polyimides, polyamides, and epoxy resins, imparting excellent thermal and mechanical properties.
• Pharmaceutical Intermediates: Used in the research and development of active pharmaceutical ingredients (APIs) and other complex organic molecules requiring a rigid, functionalized aromatic core.
• Material Science Research: Serves as a building block for creating novel organic electronic materials, liquid crystals, and metal-organic frameworks (MOFs).
• Dye and Pigment Synthesis: Acts as a precursor in the manufacture of specialized pigments and dyes with specific colorfastness and stability characteristics.
• Cross-linking Agent: Employed in formulations for advanced coatings, adhesives, and composites to enhance cross-link density and performance under demanding conditions.

Basic Information

Product Name	1,2-Dihydro-3,4,5,6-Tetraphenylphthalic Anhydride
CAS No.	6971-41-1
Molecular Formula	C34H22O3
Molecular Weight	478.54 g/mol
Synonyms	3,4,5,6-Tetraphenylphthalic Anhydride; 1,2-Dihydro-3,4,5,6-tetraphenylbenzene-1,2-dicarboxylic Anhydride; Tetraphenylphthalic Anhydride; 3,4,5,6-Tetraphenyl-1,2-benzenedicarboxylic Anhydride; 1,3-Dioxo-3a,4,5,6-tetraphenyl-3a,7a-dihydroisobenzofuran; TPPA
EINECS	Contact for details

Quality Control

Every batch of 1,2-Dihydro-3,4,5,6-Tetraphenylphthalic Anhydride is manufactured and tested under a strict quality management system. We ensure the product meets high-purity standards suitable for research and industrial synthesis. Comprehensive analytical testing, including HPLC, NMR, and FT-IR, is performed to verify identity, purity, and consistency. A Certificate of Analysis (COA) detailing all specifications is provided with each shipment and is available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product stability and performance. Keep away from incompatible materials such as strong bases and amines.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Melting Point	Contact for details
Loss on Drying	≤ 1.0%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.