Overview
1,3-Cyclohexanediol is a six-membered cyclic diol with two hydroxyl groups at the 1 and 3 positions. It serves as a versatile intermediate in organic synthesis, particularly in pharmaceuticals and specialty chemicals. The compound is valued for its ability to modify polymer properties and enhance coating formulations. Industrially, it is produced through catalytic hydrogenation of resorcinol derivatives or selective oxidation processes. Its balanced hydrophilicity and structural rigidity make it suitable for applications requiring controlled reactivity and solubility.
Physical and Chemical Properties
1,3-Cyclohexanediol exhibits moderate solubility in polar solvents like water and ethanol, attributed to its hydroxyl groups. Its crystalline form is stable at room temperature but may absorb moisture from the air (hygroscopic). The melting point ranges between 102–105°C, depending on purity. Chemically, it undergoes typical diol reactions, including esterification, etherification, and oxidation. Its cyclic structure provides steric hindrance, influencing reaction selectivity. Thermal decomposition occurs above 200°C, releasing carbon oxides and water vapor.
Main Applications
In pharmaceuticals, 1,3-cyclohexanediol acts as a building block for drug synthesis, particularly for anti-inflammatory and antiviral agents. Its rigid structure aids in designing bioactive molecules with improved metabolic stability. The coatings industry utilizes it as a crosslinking agent to enhance durability and adhesion. In polymers, it modifies flexibility and thermal resistance, especially in polyesters and epoxy resins. Niche uses include fragrances and specialty solvents where controlled evaporation rates are critical.
Safety and Storage
While 1,3-cyclohexanediol is not highly toxic, prolonged exposure may cause mild skin or eye irritation. Safety data sheets (SDS) recommend using gloves, goggles, and respiratory protection in dusty environments. Ensure adequate ventilation during handling. Store in tightly sealed containers under inert conditions to prevent moisture absorption. Incompatible with strong oxidizers; keep away from heat sources. Spills should be contained with inert absorbents and disposed of as hazardous waste per local regulations.
B2B Procurement Guide
Industrial buyers should prioritize suppliers with ISO 9001 certification and batch-specific COAs (Certificates of Analysis). Key specifications include purity (≥98%), residual solvent levels, and particle size for consistent performance. Bulk pricing is typically negotiated for quantities above 100 kg. Consider regional logistics—some manufacturers offer drum or bag packaging with moisture-proof liners. Sample testing is advised for new suppliers to verify compatibility with end-use processes.