It is an effective oxidant that inactivates protozoa ,fungi, viruses ,bacteria ,etc found in water ,It is also used for odor control in wastewater treatment for removal of organic compounds like hydrogen sulfide that causes unpleasant smell(rotten-like egg) Portable water treatment : Certified to conform to the requirements of NSF/ANSI international. OSHA Regulation Status: This chemical is considered hazardous by OSHA communication. GHS Label Elements ,including Precautionary statements: P271-used only outdoors,P260-do not breath mist ,vapors or spray ,P280-wear protective clothing including face protection,P210-keep away from heat or flammable liquids.