Description

3,3-Bis(4-Aminophenyl)Phthalide is a high-purity aromatic amine derivative with a phthalide core structure, serving as a critical advanced intermediate in specialty chemical synthesis. Its bifunctional nature, featuring two primary amine groups, makes it a versatile building block for creating polymers and complex organic molecules with tailored properties. This compound is essential for manufacturers and R&D laboratories in the pharmaceutical, high-performance polymer, and advanced materials sectors seeking to develop novel products.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for compounds requiring a rigid, functionalized aromatic backbone.
• Polymer & Resin Synthesis: Serves as a monomer or chain extender in the production of high-performance polyimides, polyamides, and epoxy resins, imparting thermal stability and mechanical strength.
• Dye & Pigment Manufacturing: Used as a foundational intermediate for synthesizing specialized dyes and organic pigments, leveraging its amine groups for chromophore development.
• Liquid Crystal & OLED Materials: Acts as a core structure in the development of advanced electronic materials for displays and optoelectronic devices.
• Cross-linking Agent: Utilized in coatings and adhesive formulations to enhance network density and chemical resistance.
• Research & Development: A valuable building block in academic and industrial R&D for exploring new chemical entities and material science applications.

Basic Information

Item	Detail
Product Name	3,3-Bis(4-Aminophenyl)Phthalide
CAS No.	509-77-3
Molecular Formula	C26H20N2O2
Molecular Weight	392.45 g/mol
Synonyms	3,3-Bis(p-aminophenyl)phthalide; 3,3-Bis(4-aminophenyl)-1(3H)-isobenzofuranone; 4,4'-(3-Oxo-1,3-dihydroisobenzofuran-1,1-diyl)dianiline; 1,1-Bis(4-aminophenyl)phthalide; Phenolphthaleinamine; 3,3-Bis(4-aminophenyl)-1(3H)-isobenzofuranone; 509-77-3; NSC 403697
EINECS	Contact for details

Quality Control

Our 3,3-Bis(4-Aminophenyl)Phthalide is produced under a stringent quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets exacting specifications for advanced synthesis. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee traceability and compliance with your quality protocols.

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). Keep away from strong oxidizing agents. Due to its light-sensitive nature, containers should be kept in the original packaging or opaque containers until use.

Specification

Item	Specification
Appearance	Off-white to light yellow crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	245 - 250 °C
Loss on Drying	≤ 0.5%
Heavy Metals	≤ 20 ppm
Residue on Ignition	≤ 0.1%

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