Overview
Isophorone is an alicyclic ketone derived from acetone, first commercialized in the 1960s. Its unique structure combines cyclohexene and ketone functionalities, making it valuable as both a solvent and chemical building block. Industrial production typically involves base-catalyzed condensation of acetone. The global market for isophorone is driven by demand from coatings, adhesives, and specialty chemical sectors, with major producers located in Europe, North America, and Asia.
Physical and Chemical Properties
As a cyclic unsaturated ketone, isophorone exhibits moderate polarity with a dielectric constant of 18. Its evaporation rate is slower than acetone but faster than glycol ethers, making it useful for flow control in coatings. The compound undergoes typical ketone reactions including condensation, hydrogenation (to form isophorol), and oxidation. Its α,β-unsaturated structure allows for Michael additions and Diels-Alder reactions, important in specialty chemical synthesis.
Main Applications
Approximately 60% of isophorone production is used to manufacture isophorone diamine (IPDA) and diisocyanate (IPDI), key components in polyurethane coatings and adhesives with superior light stability. As a solvent, it excels in high-performance coatings (especially for plastics), printing inks, and agrochemical formulations. Emerging applications include electronic chemicals and pharmaceutical intermediates where its stability under harsh conditions is advantageous.
Safety and Storage
Isophorone requires careful handling due to flammability (Class IIIB combustible liquid) and moderate toxicity (LD50 oral rat: 2,330 mg/kg). Adequate ventilation (TLV 5 ppm) and chemical-resistant gloves (nitrile/neoprene) are recommended. Storage tanks should be grounded to prevent static discharge. Incompatible with strong oxidizers and bases. Spills should be contained with inert absorbents and disposed as hazardous waste according to local regulations.
B2B Procurement Guide
Industrial buyers should specify technical grade (≥99% purity) or higher for chemical synthesis applications. Key quality indicators include water content (<0.1%) and peroxide value. Bulk procurement (ISO tanks or railcars) offers cost advantages for large-volume users. Regional availability varies—European suppliers often provide better consistency for pharmaceutical-grade material, while Asian sources may offer competitive pricing for industrial applications.
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