Description

Benzothioxanthene Dicarboxylic Anhydride is a specialized organic intermediate of significant industrial importance. This high-purity anhydride is valued for its role in the synthesis of advanced functional materials, particularly as a key building block for high-performance pigments and dyes. It is primarily sought after by manufacturers in the pigments, advanced polymers, and specialty chemical synthesis sectors who require consistent quality and reliable supply chains for their production processes.

Application

• Primary Intermediate for High-Performance Pigments (HPP): A crucial precursor in the synthesis of vivid, lightfast, and weather-resistant organic pigments, particularly benzothioxanthene-based yellows and oranges.
• Specialty Dye Manufacturing: Used in the production of specialized dyes for applications requiring high thermal and chemical stability.
• Advanced Polymer Synthesis: Serves as a monomer or cross-linking agent in the development of polymers with specific optical or electronic properties.
• Functional Material Research: Employed in R&D for creating novel materials for optoelectronics, such as organic light-emitting diodes (OLEDs) or photoconductors.
• Liquid Crystal and Colorant Applications: Utilized in the formulation of colorants for inks, coatings, and plastics where superior performance is critical.

Basic Information

Product Name	Benzothioxanthene Dicarboxylic Anhydride
CAS No.	14121-49-4
Molecular Formula	C₁₈H₈O₃S
Molecular Weight	304.32 g/mol
Synonyms	Benzothioxanthene-3,4-dicarboxylic Anhydride; 3,4-Naphtho[1',2':4,5]thieno[2,3-c]furan-1,3-dione; BTDA (context-specific); Thioxanthene Dicarboxylic Anhydride derivative; Naphthothiophenedicarboxylic Anhydride; Pigment Yellow 181 Intermediate; 1,3-Dioxo-1H-naphtho[2,3-c]thiophene-4,5-dicarboxylic Anhydride (alternative IUPAC)
EINECS	Contact for details

Quality Control

Our Benzothioxanthene Dicarboxylic Anhydride is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the exacting standards required for high-performance pigment synthesis. A comprehensive Certificate of Analysis (COA) detailing purity, impurity profile, and physical characteristics is provided with every shipment to guarantee traceability and consistency for your critical applications.

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 (moisture-sensitive) nature, the container must be kept tightly sealed after initial opening to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Yellow to orange crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Melting Point	Contact for details
Heavy Metals	≤ 20 ppm
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 2.0%

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