Description

3,3-Bis(2-Ethoxy-4-N,n-Diethylaminophenyl)-7(4)-Azaphthalide is a high-purity, specialized leuco dye intermediate essential for advanced color-forming applications. This compound matters for its role as a critical precursor in the synthesis of pressure-sensitive and thermal-sensitive dyes, enabling precise color development and stability in demanding environments. Industrial manufacturers in the specialty chemicals, advanced materials, and imaging sectors rely on this azaphthalide derivative for producing high-performance color formers used in thermal paper, carbonless copy paper, and other functional recording media.

Application

• Primary Precursor for Leuco Dyes: Key intermediate in synthesizing advanced color formers for pressure-sensitive and thermal recording systems.
• Thermal Paper Manufacturing: Used in the production of coatings for fax paper, point-of-sale (POS) receipts, and lottery tickets where controlled color development upon heat application is required.
• Carbonless Copy Paper: Essential component in the development of microencapsulated dye systems for multi-part business forms.
• Functional Imaging Materials: Employed in research and development of novel photochromic and thermochromic materials for security inks and smart labels.
• Specialty Chemical Synthesis: Serves as a building block for creating custom chromogenic compounds with specific spectral properties for analytical and diagnostic applications.
• Advanced Material Research: Utilized in academic and industrial R&D for exploring new applications in optoelectronics and sensor technologies.

Basic Information

Product Name	3,3-Bis(2-Ethoxy-4-N,n-Diethylaminophenyl)-7(4)-Azaphthalide
CAS No.	132467-74-4
Molecular Formula	C35H41N3O2
Molecular Weight	535.72 g/mol
Synonyms	7-(Diethylamino)-3,3-bis[4-(diethylamino)-2-ethoxyphenyl]phthalide; 3,3-Bis[4-(diethylamino)-2-ethoxyphenyl]-7-(diethylamino)phthalide; 3,3-Bis(2-ethoxy-4-diethylaminophenyl)-7-diethylaminophthalide; ODB-7 Precursor; Black 7 Leuco Dye Intermediate; Azaphthalide Black Former; 7-(N,N-Diethylamino)-3,3-bis(4-(N,N-diethylamino)-2-ethoxyphenyl)isobenzofuran-1(3H)-one
EINECS	Contact for details

Quality Control

Our production of 3,3-Bis(2-Ethoxy-4-N,n-Diethylaminophenyl)-7(4)-Azaphthalide adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. The material undergoes comprehensive analytical testing, including HPLC for assay and impurity profiling, to meet exacting customer specifications. Certificates of Analysis (COA) detailing purity, identity, and key physical parameters are provided with each shipment and are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its light-sensitive and easily oxidized nature, this compound should be handled under an inert atmosphere (e.g., nitrogen or argon) for long-term storage and during weighing operations to prevent degradation. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Off-white to light yellow crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 1.5%

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