4-Chlorobenzophenone CAS 134-85-0 | 99 % Min White Flake or Powder | UV-Grade Chlorinated Ketone for Photopolymers, Pharma

4-Chlorobenzophenone CAS 134-85-0 | 99 % Min White Flake or Powder | UV-Grade Chlorinated Ketone for Photopolymers, Pharma Featured Image
  • 4-Chlorobenzophenone CAS 134-85-0 | 99 % Min White Flake or Powder | UV-Grade Chlorinated Ketone for Photopolymers, Pharma

Short Description:

4-Chlorobenzophenone (CAS 134-85-0) is a white flake or free-flowing powder exhibiting a sharp melting point of 75–77 °C, ≥99 % GC purity, and ≤0.50 % loss on drying. The para-chloro substituent boosts UV absorption, lipophilicity, and chemical robustness, positioning the molecule as a cost-effective photoinitiator, pharmaceutical intermediate, and polymer additive across global markets. Every batch is vacuum-dried at ≤40 °C and double-screened to guarantee low moisture, minimal dust, and exceptional flowability—critical for automated dosing in 3D-printing resins, OLED encapsulants, and UV-curable adhesives.


Product Detail

Product Tags

Product introduction

4-Chlorobenzophenone is a high-quality aromatic ketone compound featuring a benzophenone core with a para-position chlorine substituent. This molecular modification enhances its chemical reactivity and stability, making it a valuable intermediate in pharmaceuticals, fine chemicals, photoinitiators, and polymer production.

Our 4-Chlorobenzophenone is produced using advanced synthesis and purification technology, ensuring ≥99% purity, low moisture content (Loss on Drying ≤0.50%), and a precise melting point range of 75–77°C. It is available as a white flake or white crystalline powder, offering excellent handling, storage stability, and consistent performance across applications.

Item Specification
Product Name 4-Chlorobenzophenone
CAS Number 134-85-0
Appearance White flake or white crystalline powder
Purity ≥ 99%
Loss on Drying ≤ 0.50%
Melting Point 75 – 77°C
Molecular Formula C₁₃H₉ClO
Molecular Weight 216.66 g/mol
Boiling Point Approx. 340°C
Storage Cool, dry, and well-ventilated conditions
Packaging Sealed bags, fiber drums, or custom packaging
Brand Epoch

 

COA

Property Specification Test Method Competitive Edge
Chemical Name 4-Chlorobenzophenone IUPAC nomenclature Single positional isomer
CAS Number 134-85-0 CAS Registry Globally recognized identifier
Appearance White flake or white powder Visual @ 25 °C Low color index, easy handling
Purity (GC) ≥99.0 % GC-FID High reaction efficiency
Loss on Drying ≤0.50 % USP <731> (105 °C / 2 h) Prevents bubble defects in films
Melting Point 75–77 °C DSC Sharp melting aids melt-processing
Molecular Formula C₁₃H₉ClO Elemental analysis Exact stoichiometry
Molecular Weight 216.66 g mol⁻¹ Calculated Precise molar dosing
Particle Size Flake: 1–4 mm; Powder: D90 ≤150 µm Laser diffraction & sieve Adaptable to extrusion or milling
Ash / Residue on Ignition ≤0.1 % USP <281> Ultra-low ionic contamination
Heavy Metals (total) ≤10 ppm (Pb ≤2 ppm) ICP-MS Meets RoHS & REACH Annex XVII
UV λmax (EtOH) 260 nm, 330 nm UV-Vis Efficient UV-A & UV-B absorption

 

Applications of 4-chlorobenzophenone

4-Chlorobenzophenone is widely used in commercial manufacturing and academic research in various fields:

Pharmaceutical intermediates: Serving as key precursors for the synthesis of active pharmaceutical ingredients (API).

Fine chemicals: used to produce specialty chemicals with specific properties.

Photoinitiator Manufacturing: Plays a vital role in the formulation of UV-curable inks, coatings and adhesives.

Polymer additive: Enhances the stability and light resistance of plastics and synthetic resins.

Organic Synthesis: Ideal for research and development as well as pilot projects in chemical laboratories.

Industry segments and key use cases:

UV-curable coatings and inks: Used as a Type II photoinitiator for 3D printing resins.

Pharmaceutical API: as an intermediate in the production of antihistamines and antipsychotics.

OLED and Electronics: used as encapsulant and UV absorber.

Polymer Additive: Used as a light stabilizer in PET film and polycarbonate sheet.

 

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