Description

1-Chloro-4-Propoxythioxanthone is a specialized organic compound belonging to the thioxanthone class, known for its role as a key intermediate and photoinitiator. This compound matters for its ability to efficiently generate free radicals upon exposure to UV light, initiating polymerization reactions critical in industrial coatings and inks. It is primarily needed by manufacturers in the polymer, printing, and advanced materials sectors seeking to enhance the curing efficiency and performance of UV-curable systems.

Application

• Photoinitiator in UV-Curable Systems: A key component for initiating the polymerization of monomers and oligomers in coatings, inks, and adhesives upon UV exposure.
• Intermediate for Specialty Chemicals: Serves as a crucial building block in the synthesis of more complex photoinitiators and functional additives.
• Printing Industry: Used in the formulation of high-performance, fast-curing UV inks for digital, offset, and flexographic printing applications.
• Industrial Coatings: Enhances the cure speed and surface properties of protective and decorative UV-curable coatings for wood, plastics, and metals.
• Electronics Manufacturing: Employed in photoresists and solder masks where precise and rapid UV curing is required.
• Adhesives and Sealants: Facilitates the instant curing of UV-activated adhesives used in assembly and medical device manufacturing.

Basic Information

Product Name	1-Chloro-4-Propoxythioxanthone
CAS No.	142770-42-1
Molecular Formula	C₁₆H₁₃ClO₂S
Molecular Weight	304.79 g/mol
Synonyms	1-Chloro-4-propoxy-9H-thioxanthen-9-one; 4-Propoxy-1-chlorothioxanthone; CPTX; 1-Chloro-4-propoxy-thioxanthone; 9H-Thioxanthen-9-one, 1-chloro-4-propoxy-; Thioxanthone photoinitiator derivative
EINECS	Contact for details

Quality Control

Our 1-Chloro-4-Propoxythioxanthone is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation by IR spectroscopy, to ensure it meets precise specifications for use in sensitive applications like photoinitiators. Certificates of Analysis (COA) documenting all critical parameters are 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). Keep away from heat sources and incompatible materials. Due to its light-sensitive nature, handling should be conducted under subdued lighting where practical.

Specification

Item	Specification
Appearance	Yellow to light brown powder or crystals
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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