Description

1-[4-(1,1-Dimethylethyl)Phenyl]-2-Hydroxy-2-Methylpropan-1-One is a high-purity photoinitiator widely recognized for its efficiency in UV-curable systems. This compound is valued for its excellent reactivity and low yellowing properties, which are critical for producing high-quality, durable surface coatings and inks. It is an essential component for formulators and manufacturers in the industrial coatings, graphic arts, and electronics sectors seeking reliable and consistent curing performance.

Application

• UV-Curable Coatings: A key photoinitiator for clear and pigmented coatings on wood, plastic, and metal substrates, offering fast cure speeds and enhanced surface hardness.
• Printing Inks: Used in UV-curable inks for offset, flexographic, and screen printing applications, ensuring rapid drying and excellent adhesion.
• Adhesives & Sealants: Facilitates the instant curing of UV-reactive adhesives and sealants in electronics assembly and optical bonding.
• Electronics Manufacturing: Employed in the production of photoresists and solder masks for printed circuit boards (PCBs).
• 3D Printing (Stereolithography): Acts as a photoinitiator in resin formulations for additive manufacturing, enabling precise layer-by-layer curing.
• Dental Composites: Used in light-curable dental restorative materials for fast and durable set.
• Optical Fiber Coatings: Provides efficient curing for protective coatings on optical fibers.
• Overprint Varnishes: Imparts a high-gloss, scratch-resistant finish to packaging materials.

Basic Information

Product Name	1-[4-(1,1-Dimethylethyl)Phenyl]-2-Hydroxy-2-Methylpropan-1-One
CAS No.	68400-54-4
Molecular Formula	C14H20O2
Molecular Weight	220.31 g/mol
Synonyms	2-Hydroxy-2-methyl-1-[4-(1,1-dimethylethyl)phenyl]propan-1-one; 2-Hydroxy-2-methyl-1-(4-tert-butylphenyl)propan-1-one; 1-(4-tert-Butylphenyl)-2-hydroxy-2-methylpropan-1-one; Omnirad 184; Irgacure 184; Esacure KT 046; Photomer 184; 4-tert-Butylphenyl-2-hydroxy-2-methylpropyl ketone; 4-tert-Butylphenyl α-hydroxyisobutyl ketone
EINECS	270-216-0

Quality Control

Our 1-[4-(1,1-Dimethylethyl)Phenyl]-2-Hydroxy-2-Methylpropan-1-One is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for assay and purity, to ensure it meets the high standards required for industrial photoinitiators. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and physical properties is provided with every shipment to guarantee consistency and performance in your formulations.

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 material is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 99.0 %
Melting Point	47 - 50 °C
Loss on Drying	≤ 0.5 %
Residue on Ignition	≤ 0.1 %
Heavy Metals (as Pb)	≤ 10 ppm
UV Absorption	Conforms

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