ECOCOOL COPPERSTAR is a water miscible cooling lubricant with mineral oil content and is used for the machining of steel, aluminium alloys and yellow alloys. It can be used for steel processing highly alloyed materials as well as for coarse and fine machining all conventional and aluminium materials and aerospace aluminium alloys. Free of chlorine, sulphur, phosphorus and secondary alkanolamines/amides. It produces a stable and opalescent emulsion when mixed with water.