OQContact[email protected]https://chemicals.oq.com/Phone:+49 21739993-0Articles & NewsHomeA Look at TCD Dimethanol use in Fragrance FormulationOQ Chemicals' TCD Dimethanol (TCD DM) is a unique solvent molecule used in advanced fragrance formulations and perfume oils as a secondary solvent, viscosity modifier, thickener and retardant, enhancing scent molecules while increasing their longevity.