2-Hydroxy-1-[4-[4-(2-hydroxy-2-methylpropionyl)phenoxy]phenyl]-2-methylpropanone
[CAS# 71868-15-0]

Identification

• Classification: Pharmaceutical intermediate >> Heterocyclic compound intermediate >> Pyrimidine compound >> Ketones
• Name: 2-Hydroxy-1-[4-[4-(2-hydroxy-2-methylpropionyl)phenoxy]phenyl]-2-methylpropanone
• Synonyms: Esacure KIP 160; Irgacure KIP 160
• Molecular Formula: C₂₀H₂₂O₅
• Molecular Weight: 342.39
• CAS Registry Number: 71868-15-0
• EC Number: 642-952-5
• SMILES: CC(C)(C(=O)C1=CC=C(C=C1)OC2=CC=C(C=C2)C(=O)C(C)(C)O)O

Properties

• Solubility: Practically insoluble (0.024 g/L) (25 ºC), Calc.^*
• Density: 1.204±0.06 g/cm³ (20 ºC 760 Torr), Calc.^*

^* Calculated using Advanced Chemistry Development (ACD/Labs) Software V11.02 (©1994-2018 ACD/Labs)

Safety Data

• Hazard Symbols: GHS09 Warning
• Hazard Statements: H411
• Precautionary Statements: P273-P391-P501

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Chronic hazardous to the aquatic environment	Aquatic Chronic	2	H411
Eye irritation	Eye Irrit.	2	H319
Chronic hazardous to the aquatic environment	Aquatic Chronic	1	H410
Skin irritation	Skin Irrit.	2	H315
Acute hazardous to the aquatic environment	Aquatic Acute	1	H400
Skin sensitization	Skin Sens.	1	H317
Chronic hazardous to the aquatic environment	Aquatic Chronic	3	H412

Discovory and Applicatios

2-Hydroxy-1-[4-[4-(2-hydroxy-2-methylpropionyl)phenoxy]phenyl]-2-methylpropanone, commonly known as a UV photoinitiator, plays a crucial role in the field of polymer chemistry. This compound, characterized by its complex structure, is integral to the advancement of UV-curable materials and technologies.

The discovery of this photoinitiator arose from the need for more efficient and versatile compounds that could initiate polymerization reactions under UV light. Its chemical structure features a central hydroxy group, which is crucial for the compound’s functionality, alongside several aromatic and alkyl groups that contribute to its photochemical properties. The 2-hydroxy-2-methylpropanone moiety enhances the compound’s reactivity, while the phenoxy and phenyl groups provide stability and compatibility with various formulations.

In practical applications, 2-hydroxy-1-[4-[4-(2-hydroxy-2-methylpropionyl)phenoxy]phenyl]-2-methylpropanone is widely utilized in UV-curable coatings. These coatings are essential in various industries, including automotive, electronics, and consumer goods. The photoinitiator’s ability to rapidly initiate polymerization leads to the formation of durable, high-quality coatings with excellent adhesion and chemical resistance. This results in improved performance and longevity of the coated products.

The compound is also employed in UV-curable inks and adhesives. In the printing industry, UV-curable inks containing this photoinitiator offer benefits such as quick curing times and vibrant, high-resolution prints. The ability to cure rapidly under UV light is particularly valuable for high-speed printing processes, reducing production times and enhancing print quality. Similarly, in adhesives, the compound facilitates rapid curing and strong bonding, which is crucial for applications requiring quick processing and reliable adhesion.

The ongoing research into 2-hydroxy-1-[4-[4-(2-hydroxy-2-methylpropionyl)phenoxy]phenyl]-2-methylpropanone aims to optimize its performance and expand its applications. Studies focus on improving the compound’s efficiency in various formulations and exploring new areas where its unique properties can be advantageous. As the demand for advanced UV-curable materials continues to grow, this photoinitiator remains a significant contributor to the development of innovative and high-performance products.