Our THERMISOL QH MC range of quenchants is based on high quality hydro-cracked oils with a low level of evaporation. Within the Molecular Conversion (MC) process, standard mineral oils are converted by chemical reaction with hydrogen under high pressure and temperatures. The result of this hydro-cracking is a relatively inexpensive mineral oil based quenchant that is comparable in performance to more expensive synthetic quenchants. THERMISOL QH 10 MC is recommended for forgings directly from the forge heat, tempering of wrought materials, screws and springs.