4-(4-Methylphenylthio)benzophenone
[CAS# 83846-85-9]

Identification

• Classification: Chemical reagent >> Organic reagent >> Thiol/thiophenol
• Name: 4-(4-Methylphenylthio)benzophenone
• Synonyms: 4-(p-Tolylthio)benzophenone; [4-[(4-methylphenyl)thio]phenyl](phenyl)methanone
• Molecular Formula: C₂₀H₁₆OS
• Molecular Weight: 304.41
• CAS Registry Number: 83846-85-9
• EC Number: 281-064-9
• SMILES: CC1=CC=C(C=C1)SC2=CC=C(C=C2)C(=O)C3=CC=CC=C3

Properties

• Melting point: 73-87 ºC

Safety Data

• Hazard Symbols: GHS07 Warning
• Hazard Statements: H302+H312-H302-H312-H315-H319-H335-H413
• Precautionary Statements: P261-P264-P264+P265-P270-P271-P273-P280-P301+P317-P302+P352-P304+P340-P305+P351+P338-P317-P319-P321-P330-P332+P317-P337+P317-P362+P364-P403+P233-P405-P501

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Eye irritation	Eye Irrit.	2	H319
Skin irritation	Skin Irrit.	2	H315
Acute toxicity	Acute Tox.	4	H302
Specific target organ toxicity - single exposure	STOT SE	3	H335
Acute toxicity	Acute Tox.	4	H312
Chronic hazardous to the aquatic environment	Aquatic Chronic	4	H413

Discovory and Applicatios

4-(4-Methylphenylthio)benzophenone, often referred to by its chemical name, is an aromatic ketone with notable applications in various fields due to its unique chemical properties. Discovered in the late 20th century as part of efforts to develop advanced photoactive materials, this compound has become important in both industrial and research contexts.

The discovery of 4-(4-methylphenylthio)benzophenone is rooted in the quest for new photo-initiators and photostabilizers. The compound was synthesized as part of broader research into benzophenone derivatives, which are known for their effectiveness in absorbing ultraviolet (UV) light. The presence of the 4-methylphenylthio group enhances the compound’s ability to absorb and manage UV radiation, making it a valuable addition to the field of photochemistry.

In terms of applications, 4-(4-methylphenylthio)benzophenone is primarily used as a UV absorber and stabilizer in various industrial products. It is particularly effective in preventing the degradation of materials exposed to UV light, making it a key ingredient in products like coatings, plastics, and adhesives. By incorporating this compound, manufacturers can improve the longevity and durability of their products, reducing the effects of UV-induced wear and tear.

Moreover, the compound has found use in the field of photoinitiation. Photoinitiators are chemicals that absorb UV light and initiate polymerization processes. 4-(4-methylphenylthio)benzophenone is employed in certain photoinitiator systems, where it plays a crucial role in initiating the polymerization of resins and other materials when exposed to UV light. This application is particularly significant in the production of photopolymerizable coatings and inks, where precise control over the curing process is essential.

Additionally, 4-(4-methylphenylthio)benzophenone has applications in the development of new photoresponsive materials. Research into its photochemical properties has led to its exploration in areas such as photochromic materials and light-sensitive polymers. The compound’s ability to undergo photochemical reactions makes it a candidate for various innovative applications in material science and nanotechnology.

In summary, 4-(4-methylphenylthio)benzophenone is a valuable chemical substance with a range of applications in UV protection, photoinitiation, and photoresponsive materials. Its role in enhancing the stability and functionality of products exposed to UV light underscores its importance in both industrial and research settings.