NOVELTY - A surface is contacted with composition comprising organic disulfide compound (I) for inhibiting corrosion on surface.    USE - Method for inhibiting corrosion on surface e.g. portion of equipment used in production, transportation, storage, and/or separation of crude oil or natural gas, equipment used in coal-fired process, waste-water process, farm, slaughter house, landfill, municipality wastewater plant, coking coal process, and biofuel process (all claimed). Uses include but are not limited to pipelines, separation vessels, dehydration units, gas lines, scrubbers, spray dry absorbers, dry sorbent injectors, spray towers, contact or bubble towers, cargo vessels, etc.    ADVANTAGE - The method inhibits corrosion on surface using composition containing organic disulfide, which does not exhibit harsh or offensive thiol/mercaptan-based odor. The composition containing organic disulfide compound is stable even at elevated temperatures when contained in blended corrosion inhibitor formulation, and shows reduced volatile degradation species in the vapor phase.    DETAILED DESCRIPTION - A surface is contacted with composition comprising organic disulfide compound of formula (I) for inhibiting corrosion on surface. The compound (I) is chosen from compounds other than cystine, cystamine, disulfides of 1-amino-2-methyl-2-thiopropane, 1-amino-3-thiopropane, 1-amino-4-thiobutane, 2-amino-3-methyl-1-thiobutane, 2-amino-1-thiohexane, 2-amino-3,3-dimethyl-1-thiobutane, 1-amino-2-thiopropane, 2-amino-3-methyl-3-thiobutanecarboxylic acid (penicillamine), 2-amino-3-thiobutanecarboxylic acid (homocysteine), 2-amino-2-methyl-1-thiopropane, 1-amino-2-thiohexane, 2-amino-1-thiohexadecane, 2-amino-3-thioadipic acid, 2-amino-3-thio-3-phenylpropanecarboxylic acid, 1-amino-2-thio-1,2-diphenylethane, and 2-(2-amino-1-thioethyl)-naphthalene, diethyl disulfide, di-n-propyl disulfide, diisopropyl disulfide, di-n-butyl disulfide, di-sec-butyl disulfide, diisobutyl disulfide, di-tert-butyl disulfide, di-n-pentyl disulfide, di-neopentyl disulfide, di-n-hexyl disulfide, di-n-heptyl disulfide, di-n-octyl disulfide, di-n-nonyl disulfide, di-n-decyl disulfide, di-n-dodecyl disulfide, di-n-tridecyl disulfide, di-n-tetradecyl disulfide, di-n-pentadecyl disulfide, di-n-hexadecyl disulfide, di-n-heptadecyl disulfide, di-n-octadecyl disulfide, di-n-decyl disulfide, diundecyl disulfide, didodecyl disulfide, dihexadecyl disulfide, diallyl disulfide, dibenzyl disulfide, 2-naphthyl disulfide, and dithienyl disulfide and/or their acid addition salts.    R1,R2=alkyl, alkenyl, alkynyl, aryl, heteroaryl, heterocyclyl or cycloalkyl (all optionally substituted).