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4-Methylbenzophenone

Good Quality 4-Methylbenzophenone CAS 134-84-9

CAS No.:134-84-9
Purity:99%
Place of Origin:Made in China
Appearance:White crystal
MF:C14H12O

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4-Methylbenzophenone (also called (4-methylphenyl) phenyl ketone) is an aromatic ketone used primarily as a photoinitiator, a UV absorber / filter in coatings and inks, and a reference standard in analytical chemistry. Its UV-active aromatic ketone core enables absorption of UV radiation, which is exploited in curing, stabilizing, and spectral applications

Product picture:
4-Methylbenzophenone
4 Methylbenzophenone
134-84-9
4 Methylbenzophenone
Function
1. Photoinitiator
2. UV Absorber / Filter
3. Analytical Standard
4. Coatings & Overprint Varnishes
Item
Result
Appearence
White Powder
Purity
0.99
Boiling point
326 ℃ (lit.)
Density
0.9926
Storage
Cool Dry Place

 

4-Methylbenzophenone (also called (4-methylphenyl) phenyl ketone) is an aromatic ketone used primarily as a photoinitiator, a UV absorber / filter in coatings and inks, and a reference standard in analytical chemistry. Its UV-active aromatic ketone core enables absorption of UV radiation, which is exploited in curing, stabilizing, and spectral applications

 

Package:25kg

4-Methylbenzophenone
4 Methylbenzophenone

 

Q1: During the formulation process, the UV curing speed of the coating decreases when using 4-Methylbenzophenone. What could be the reason?
A1: This may result from impurities or an incorrect photoinitiator ratio. It’s recommended to ensure the purity of 4-Methylbenzophenone and adjust the photoinitiator system to optimize the curing response


Q2: The final varnish tends to yellow after exposure to light for a period of time. How can this be mitigated?
A2: Yellowing is often caused by excessive photoinitiator residues or reaction by-products. Using stabilizers such as UV absorbers or replacing with a lower-odor, high-purity grade of 4-Methylbenzophenone can effectively reduce this issue

Q3: Poor dispersion occurs when 4-Methylbenzophenone is added to solvent-based systems. What should be done?
A3: It’s recommended to use mild heating (40–50°C) during mixing and select solvents compatible with the product’s polarity, such as toluene or MEK, to enhance dispersion and prevent precipitation

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