Hydrogen sulfide is commonly found in raw natural gas and biogas. For safe handling procedures, a hydrogen sulfide safety data sheet (SDS) should be consulted.[45]. ; Elving, P.J. It can form from rotting animals, making it a byproduct of refining fossil fuels.

Hydrogen Sulfide and Sulfur Bacteria in Well Water", "Enzymology of H 2 S Biogenesis, Decay and Signaling", "The Quantitative Significance of the Transsulfuration Enzymes for H 2 S Production in Murine Tissues", "A timeline of hydrogen sulfide (H2S) research: From environmental toxin to biological mediator", "International Union of Basic and Clinical Pharmacology. In 2011 it was reported that increased concentration of H2S, possibly due to oil field practices, was observed in the Bakken formation crude and presented challenges such as "health and environmental risks, corrosion of wellbore, added expense with regard to materials handling and pipeline equipment, and additional refinement requirements". In naming an acid based on the element, sulfur, the full name, sulfur– is used. Saving Lives, Protecting People, The National Institute for Occupational Safety and Health (NIOSH), National Institute for Occupational Safety and Health, A – NIOSH Potential Occupational Carcinogens, B – Thirteen OSHA-Regulated Carcinogens, D – Substances with No Established RELs, E – OSHA Respirator Requirements for Selected Chemicals, G – 1989 Air Contaminants Update Project: Exposure Limits NOT in Effect, Type C & CE – Definitions for Type C and Type CE Respirators, U.S. Department of Health & Human Services. Hydrogen Sulfide: Hydrogen sulfide, or H2S, is a colorless, poisonous, and flammable gas. Hydrogen sulfide is often produced from the microbial breakdown of organic matter in the absence of oxygen gas, such as in swamps and sewers; this process is commonly known as anaerobic digestion which is done by sulfate-reducing microorganisms. Related Pages. aluminium sulfide, phosphorus pentasulfide, silicon disulfide liberate hydrogen sulfide upon exposure to water:[16]. You can sign in to vote the answer. Small H2S blooms have been detected in modern times in the Dead Sea and in the Atlantic ocean off the coast of Namibia. Thus, H2S is hydrosulfuric acid, rather than hydrosulfic acid, as the name “sulfide” might suggest. Bruckenstein, S.; Kolthoff, I.M., in Kolthoff, I.M. [18] H2S has been shown to interact with NO resulting in several different cellular effects, as well as the formation of a new signal called nitrosothiol. Hydrogen sulfide is a highly toxic and flammable gas (flammable range: 4.3–46%). So this question is in relation to a previous... Find the pH of a 0.14M CH_3COOH solution. All other trademarks and copyrights are the property of their respective owners. Services, Working Scholars® Bringing Tuition-Free College to the Community.

Hydrogen is +1 charge and sulfide is 2- so you need 2 hydrogens to compensate for the sulfide. 2. In particular, a buildup of hydrogen sulfide in the atmosphere may have caused, or at least contributed to, the Permian-Triassic extinction event 252 million years ago. Although very pungent at first (it smells like rotten eggs[44]), it quickly deadens the sense of smell, so victims may be unaware of its presence until it is too late. Many personal safety gas detectors, such as those used by utility, sewage and petrochemical workers, are set to alarm at as low as 5 to 10 ppm and to go into high alarm at 15 ppm. In industrial anaerobic digestion processes, such as waste water treatment or the digestion of organic waste from agriculture, hydrogen sulfide can be formed from the reduction of sulfate and the degradation of amino acids and proteins within organic compounds. Residents living in the area were urged to stay indoors by the emergencies ministry. "Hydrogen Sulfide - PubChem Public Chemical Database", "Southern Natural Gas Company Tariff, General Terms and Conditions Section 3.1(b)", Concise International Chemical Assessment Document 53, National Pollutant Inventory - Hydrogen sulfide fact sheet, https://simple.wikipedia.org/w/index.php?title=Hydrogen_sulfide&oldid=7086725, Articles containing unverified chemical infoboxes, Creative Commons Attribution/Share-Alike License, C 20 ppm; 50 ppm [10-minute maximum peak].

Bruckenstein, S.; Kolthoff, I.M., in Kolthoff, I.M. [19] These enzymes have been identified in a breadth of biological cells and tissues, and their activity has been observed to be induced by a number of disease states. USEPA; Health and Environmental Effects Profile for Hydrogen Sulfide p.118-8 (1980) ECAO-CIN-026A, International Union of Pure and Applied Chemistry, digestion of organic waste from agriculture, National Institute for Occupational Safety and Health, "Hydrogen Sulfide - PubChem Public Chemical Database", "Hydrogen sulfide: Physiological properties and therapeutic potential in ischaemia", "Superconductivity record sparks wave of follow-up physics", "Why Does My Water Smell Like Rotten Eggs? It is also produced in the mouth (halitosis).[35]. [22] According to a current classification, pathophysiological states with H2S overproduction (e.g. Linking to a non-federal website does not constitute an endorsement by CDC or any of its employees of the sponsors or the information and products presented on the website. 7783-06-4 RTECS No. The acid is widely used as a flavoring and acidifier in food. In municipal waste landfill sites, the burial of organic material rapidly leads to the production of anaerobic digestion within the waste mass and, with the humid atmosphere and relatively high temperature that accompanies biodegradation, biogas is produced as soon as the air within the waste mass has been reduced. [93] It also occurs in the clouds of planets in our solar system. [96], Organic residues from these extinction boundaries indicate that the oceans were anoxic (oxygen-depleted) and had species of shallow plankton that metabolized H2S. The acids with "hydro" at the start of their names are all derived from dissolved gases, e.g.



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