Description

2,4-Bis(Isopropyl)-9H-Thioxanthen-9-One is a specialized organic compound belonging to the thioxanthone class of photoinitiators. This compound matters for its ability to efficiently generate free radicals upon exposure to UV light, initiating polymerization reactions in various resin systems. Industries that require high-performance, UV-curable coatings, inks, and adhesives, such as the graphic arts, electronics, and industrial manufacturing sectors, are the primary users of this material.

Application

• UV-Curable Coatings: Acts as a key photoinitiator for clear and pigmented coatings on wood, plastic, and metal substrates, providing fast curing and excellent surface hardness.
• Printing Inks: Enables rapid drying and curing in flexographic, screen, and offset inks, enhancing print quality and production speed.
• Photopolymer Printing Plates: Used in the formulation of plates for letterpress and flexographic printing, ensuring precise image reproduction.
• Electronics Encapsulation: Facilitates the curing of protective resins and adhesives for electronic components, offering good electrical insulation.
• Adhesives & Sealants: Initiates polymerization in UV-curable adhesives for glass, optical fibers, and medical devices, allowing for clean, solvent-free bonding.
• Dental Composites: Serves as a photoinitiator in light-curable restorative and prosthetic dental materials.
• 3D Printing (Stereolithography): A component in resin formulations for vat photopolymerization, contributing to layer-by-layer curing.

Basic Information

Product Name	2,4-Bis(Isopropyl)-9H-Thioxanthen-9-One
CAS No.	79044-56-7
Molecular Formula	C23H26OS
Molecular Weight	350.52 g/mol
Synonyms	2,4-Diisopropylthioxanthone; DITX; 2,4-Bis(1-methylethyl)-9H-thioxanthen-9-one; 2,4-Diisopropyl-9H-thioxanthen-9-one; Photoinitiator DITX; 2,4-Di-iso-propylthioxanthone; 9H-Thioxanthen-9-one, 2,4-bis(1-methylethyl)-; Lucirin TPO-L related photoinitiator
EINECS	Contact for details

Quality Control

Our production of 2,4-Bis(Isopropyl)-9H-Thioxanthen-9-One adheres to strict quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity, GC for residual solvents, and spectroscopic identification, to ensure consistency and performance. Certificates of Analysis (COA) documenting all specifications are available upon request to support your quality assurance and regulatory needs.

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 heat sources and incompatible materials. Under these conditions, the product remains stable for extended periods.

Specification

Item	Specification
Appearance	Light yellow to yellow crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residual Solvents (GC)	Meets ICH guidelines

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