Inventors:
James D. Anderson - Fort Washington PA
Sandra K. Seigle - Phoenixville PA
Assignee:
Amchem Products - Ambler PA
International Classification:
C11D 700, C23G 106
Abstract:
Acid cleaning compositions containing an inhibitor for cleaning metal surfaces, processes for cleaning metal surfaces therewith, and concentrates useful in forming the acid cleaning compositions. The present acid cleaning compositions contain an acid, a Mannich base, a thiourea, an alkyl trimethyl ammonium halide and/or an alkyl (C. sub. 8 -C. sub. 9) phenoxypolyethoxy ethanol, and a nonionic surfactant which is a condensate of poly(oxyethylene) and poly(oxypropylene) groups.