Description

2-Hydroxy-2-Methyl-1-Phenyl-1-Propanone Mixt. With (1-Hydroxycyclohexyl)Phenylmethanone is a high-performance photoinitiator blend designed for efficient free radical polymerization under UV light. This mixture is critical for achieving rapid curing speeds and excellent surface-to-depth cure in demanding industrial applications. It is primarily utilized by manufacturers in the coatings, inks, adhesives, and electronics sectors who require reliable and consistent UV-initiated cross-linking.

Application

• UV-Curable Coatings & Paints: A key component for wood, plastic, and metal coatings requiring fast curing, high gloss, and chemical resistance.
• Graphic Arts & Printing Inks: Enables rapid drying of screen, flexographic, and offset inks, improving production throughput.
• Industrial Adhesives & Sealants: Used in formulations for instant-bonding adhesives in assembly and packaging applications.
• Electronics (PCB & Encapsulation): Facilitates the polymerization of protective conformal coatings and solder masks on printed circuit boards.
• 3D Printing (Stereolithography): Serves as a photoinitiator in resin-based additive manufacturing for precise layer curing.
• Dental Composites & Medical Devices: Employed in light-cured materials for restorative dentistry and biocompatible polymer devices.

Basic Information

Product Name	2-Hydroxy-2-Methyl-1-Phenyl-1-Propanone Mixt. With (1-Hydroxycyclohexyl)Phenylmethanone
CAS No.	445491-59-8
Molecular Formula	Mixture of C10H12O2 and C13H16O2
Molecular Weight	Mixture of 164.20 g/mol and 204.26 g/mol
Synonyms	Photoinitiator 184 / Darocur 1173 Mixture; Blend of 2-Hydroxy-2-methylpropiophenone and 1-Hydroxycyclohexyl phenyl ketone; HMPP/HCPK Blend; UV Photoinitiator Blend; 2-Hydroxy-2-methyl-1-phenyl-1-propanone and α-Hydroxy-α,α-dimethylacetophenone mixture with 1-Hydroxycyclohexyl phenyl ketone; Benzeneacetonitrile, α-(1-cyano-1-methylethyl)-α-(phenylmethyl)-; (1-Hydroxycyclohexyl)(phenyl)methanone mixture with 2-hydroxy-2-methyl-1-phenyl-1-propanone
EINECS	Contact for details

Quality Control

Our photoinitiator blend is produced under strict quality management systems to ensure batch-to-batch consistency and performance reliability. Each lot is analyzed using advanced chromatographic techniques (HPLC, GC) to verify critical parameters such as assay, ratio of components, and impurity profiles. Certificates of Analysis (COA) documenting full specifications are available upon request, supporting compliance with relevant industry standards for raw materials.

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, sparks, and open flame. This mixture is light-sensitive (store away from light) and compatible with strong acid/organic solvent environments, but standard chemical handling precautions should be observed.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 99.0% (Total photoinitiators)
Composition Ratio (HMPP : HCPK)	As per customer requirement
Water Content (Karl Fischer)	≤ 0.2%
Specific Gravity (20°C)	1.05 - 1.10
Refractive Index (20°C)	1.530 - 1.540

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