Description

2-Hydroxy-4'-(2-Hydroxyethoxy)-2-Methylpropiophenone is a specialized organic compound widely recognized as a highly effective photoinitiator in polymer chemistry. Its core value lies in its ability to generate free radicals upon exposure to UV light, initiating and accelerating the polymerization process for various resins and coatings. This product is essential for manufacturers in the UV-curable inks, coatings, adhesives, and photopolymer printing plates industries who require fast curing speeds and excellent surface finish quality.

Application

• UV-Curable Coatings and Varnishes: A key photoinitiator for wood, plastic, and metal coatings, providing fast cure and high gloss.
• UV Printing Inks: Used in offset, flexographic, and screen printing inks to enable instant drying and high print quality.
• Photopolymer Printing Plates: Critical for the production of flexographic and letterpress plates in the packaging and printing industries.
• UV-Curable Adhesives and Sealants: Facilitates rapid bonding for electronics assembly, optical lenses, and medical devices.
• Dental Composites and Restoratives: Employed in light-cured dental materials for fillings and sealants.
• Optical Fiber Coatings: Used in the UV-curable primary and secondary coatings that protect optical fibers.
• Electronics (PCB Photoresists): Acts as a photoinitiator in solder masks and imaging layers for printed circuit boards.
• 3D Printing (Stereolithography): Initiates the polymerization of liquid resins in vat photopolymerization additive manufacturing.

Basic Information

Product Name	2-Hydroxy-4'-(2-Hydroxyethoxy)-2-Methylpropiophenone
CAS No.	106797-53-9
Molecular Formula	C13H18O4
Molecular Weight	238.28 g/mol
Synonyms	Omnirad 2959; Irgacure 2959; 2-Hydroxy-1-[4-(2-hydroxyethoxy)phenyl]-2-methylpropan-1-one; 2-Hydroxy-2-methyl-1-[4-(2-hydroxyethoxy)phenyl]propan-1-one; 1-[4-(2-Hydroxyethoxy)phenyl]-2-hydroxy-2-methylpropan-1-one; Photoinitiator 2959; UV-2959; CGI 2959
EINECS	Contact for details

Quality Control

Our 2-Hydroxy-4'-(2-Hydroxyethoxy)-2-Methylpropiophenone is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the high standards required for sensitive UV-curing applications. Certificates of Analysis (COA) documenting key parameters are available upon request to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Keep away from heat sources and incompatible materials. Due to its light-sensitive nature, containers should be kept sealed and opaque or stored in darkness to maintain product efficacy.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Melting Point	86 - 92 °C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
UV Absorption	Conforms

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