AUTOMOTIVE PARTS

DEF (Diesel Exhaust Fluid) with a common name, AUS 32 is an aqueous colorless Urea solution. Urea is produced by reacting ammonia and carbon dioxide to form ammonium carbamate which is then dehydrated to Urea. This Urea solution is then diluted with processed demineralized water. A specific high purity of water is used to avoid contamination. DEF consists of 32.5% Urea and 67.5% deionized water and is an essential component of selective catalytic reduction (SCR) technology.