LPG is required to be non-corrosive to copper. Because H2S is corrosive to copper, passing the copper corrosion test can be problematic when unit upsets result in contamination of LPG with H2S. A water-soluble H2S scavenger effectively brings LPG spheres back into specification without negatively affecting other key LPG properties. Nalco Water has extensive experience in LPG remediation, bringing distressed LPG back on spec without costly reprocessing.