Cyclohexanone Diluent

Updated: 2026-09-11

Overview

Cyclohexanone Diluent is a versatile organic solvent derived from cyclohexanone, widely used in industrial processes due to its effective solvency and moderate evaporation properties. It serves as a critical component in coatings, inks, and adhesive formulations, where it acts as a thinner or viscosity modifier. Its balanced performance makes it suitable for both high-performance and general-purpose applications. In addition to its role in coatings, cyclohexanone diluent is employed in chemical synthesis, particularly in the production of caprolactam (a precursor to nylon). Its ability to dissolve a wide range of polymers and resins enhances its utility across multiple industries, including automotive, construction, and electronics.

Physical and Chemical Properties

Cyclohexanone Diluent is characterized by its colorless to pale yellow appearance and a distinct, peppermint-like odor. It has a density of 0.947 g/cm³ and a boiling point of 155-156°C, making it less volatile than some alternative solvents. Its miscibility with most organic solvents (e.g., alcohols, ketones) contrasts with limited water solubility (approximately 8 g/L at 20°C). Key chemical properties include its role as a polar aprotic solvent, which enables it to dissolve nitrocellulose, vinyl resins, and certain synthetic rubbers. Its moderate evaporation rate ensures controlled drying in coating applications, reducing defects like blistering or uneven film formation.

Main Applications

The primary use of Cyclohexanone Diluent is as a thinner for industrial paints and coatings, where it improves sprayability and flow while maintaining film integrity. It is especially valued in automotive and machinery coatings for its compatibility with epoxy and acrylic resins. Additionally, it serves as a cleaning agent for equipment contaminated with grease or polymer residues. In adhesives and sealants, the diluent adjusts viscosity for easier application. Beyond coatings, it is a process solvent in pharmaceutical and agrochemical manufacturing, where high purity grades are required. Its role in caprolactam production further underscores its industrial significance.

Safety and Storage

Cyclohexanone Diluent is flammable (flash point: 44°C) and requires storage in tightly sealed containers away from heat and open flames. Workplace exposure limits (e.g., OSHA PEL: 50 ppm) mandate adequate ventilation and PPE, including gloves and goggles, to prevent skin/eye contact or inhalation of vapors. Spills should be contained using inert absorbents, and contaminated areas must be ventilated. Incompatible materials include strong oxidizers and acids. For long-term storage, stainless steel or lined containers are recommended to prevent degradation. Always follow SDS guidelines and local regulations for disposal.

B2B Procurement Guide

When procuring Cyclohexanone Diluent, prioritize suppliers with certifications such as ISO 9001 or REACH compliance to ensure quality and regulatory adherence. Bulk purchases (e.g., drum or tanker quantities) typically offer cost advantages, but verify logistics compatibility (e.g., hazmat shipping requirements). Key specifications to confirm include purity (≥99%), water content (<0.1%), and absence of heavy metals. Request batch analysis reports and consider sampling for critical applications. For global sourcing, factor in regional price variations due to raw material costs and tariffs.