Polymerization Inhibitor QM-PH

Product Name:​ Polymerization Inhibitor QM-PH

Chemical Name:​ 4-Benzylidene-2,6-di-tert-butylcyclohexa-2,5-dien-1-one

Molecular Formula:​ C₂₁H₂₆O

Molecular Weight:​ 294.43

CAS No.:​ 7078-98-0

Properties:​ Typically yellow to light brown crystalline solid or crystalline powder. Density 1.03 g/cm³ (25°C). Boiling point approx. 186°C (under reduced pressure). Soluble in aromatic solvents such as benzene and toluene.

Specifications:

Applications:​ A high-efficiency quinone methide polymerization inhibitor primarily used during production, storage, and transportation of vinyl monomers (e.g., styrene) to prevent self-polymerization, ensuring chemical safety and product quality. Exhibits excellent antioxidant and free radical scavenging capabilities, effectively extending monomer shelf life without significantly affecting subsequent polymerization processes.

Packaging:​ Paper-plastic composite bag with inner polyethylene liner; net weight 25 kg/bag or customized per customer requirements.

Storage & Transportation:​ Inspect packaging integrity prior to transport and storage. Store and transport in categorized stacks in dry, clean, cool warehouses. Prevent moisture, heat exposure, and deterioration. Store sealed and protected from light to prevent oxidative discoloration.