glycol dimethyl ether and dipropylene glycol dimethyl ether amide solvents such as formamide monomethylformamide dimethylformamide monoethylformamide diethylformamide acetamide monomethylacetamide dimethylacetamide monoethylacetamide diethylacetamide n methylpyrrolidone and n ethylpyrrolidone alcohol solvents such as methyl alcohol ethyl alcohol isopropanol ethylene glycol and propylene glycol sulfoxide solvents such as dimethyl sulfoxide sulfone solvents such as dimethyl sulfone diethyl sulfone bis 2 hydroxyethyl sulfone and tetramethylene sulfone imidazolidinone solvents such as 1 3 dimethyl 2 imidazolidinone 1 3 diethyl 2 imidazolidinone and 1 3 diisopropyl 2 imidazolidinone and lactone solvents such as u03b3 butylolactone and u03b4 valerolactone of the above solvents preferred are dimethyl sulfoxide n n dimethyl formamide n n dimethylacetamide n methylpyrrolidone diethylene glycol monomethyl ether diethylene glycol monobutyl ether dipropylene glycol monomethyl ether dipropylene glycol monobutyl ether and propylene glycol because of their easy availability and easiness of handling due to high boiling points the content of the organic solvent is not specifically limited and preferably 0 to 95 by weight more preferably 20 to 80 by weight of the cleaning composition the cleaning composition of the present invention may contain water preferably in an amount up to 60 by weight more preferably 3 to 40 by weight of the cleaning composition although not particularly limited thereto the cleaning composition of the present invention may further contain a corrosion inhibitor such.