BONDERITE C-AK 4181-L is an amber liquid compound formulated to remove rust, paints, lube oils, drawing pastes, cutting oils and protective oils from ferrous substrates and some alloys by immersion methods. TURCO 4181-L is highly alkaline and should not be used on tin, aluminium, zinc or any alloy containing these metals as the major constituents. TURCO 4181-L will not attack metals such as magnesium alloys, stainless steels, or Monel alloys when used as directed. TURCO 4181-L can be used on titanium alloys when diluted to a concentration of 12- 15% with water at 70�C.