![]() This kind of deterioration is a major process affecting sewer systems worldwide and leading to very high rehabilitation costs. Biogenic sulfuric acid reacts with sewerage materials and most generally causes mass loss, cracking of the sewer pipes and ultimately, structural collapse. Microbially-induced corrosion (MIC) or biogenic sulfide corrosion are also caused by sulfate reducing bacteria producing sulfide that is emitted in the air and oxidized in sulfuric acid by sulfur oxidizing bacteria. Corrosion is a major concern in many industrial installations processing sulfides: sulfide ore mills, deep oil wells, pipelines transporting soured oil and Kraft paper factories. Sulfides present in aqueous solution are responsible for stress corrosion cracking (SCC) of steel, and is also known as sulfide stress cracking. Corrosion induced by sulfide ĭissolved free sulfides (H 2S, HS − and S 2−) are very aggressive species for the corrosion of many metals such as steel, stainless steel, and copper. Scientists use these minerals to study environments in the deep sea or in the Earth's past. This sulfide minerals recorded information (like isotopes) of their surrounding environment during their formation. Significant examples include: argentite ( silver sulfide), cinnabar ( mercury sulfide), galena ( lead sulfide), molybdenite ( molybdenum sulfide), pentlandite ( nickel sulfide), realgar ( arsenic sulfide), and stibnite ( antimony), sphalerite ( zinc sulfide), and pyrite ( iron disulfide), and chalcopyrite ( iron- copper sulfide). The fungus Aspergillus niger plays a role in the solubilization of heavy metal sulfides. Several have practical applications as pigments, in solar cells, and as catalysts. In fact, the bonding in transition metal sulfides is highly covalent, which gives rise to their semiconductor properties, which in turn is related to the deep colors. Such species are sometimes referred to as salts. The black tarnish formed on sterling silver is Ag 2S. One famous example is the bright yellow species CdS or " cadmium yellow". Such inorganic sulfides typically have very low solubility in water, and many are related to minerals with the same composition (see below). Metal sulfides react with halogens, forming sulfur and metal salts.Ĩ MgS + 8 I 2 → S 8 + 8 MgI 2 Metal derivatives Īqueous solutions of transition metals cations react with sulfide sources (H 2S, NaHS, Na 2S) to precipitate solid sulfides. Depending on the conditions, the oxidation can produce elemental sulfur, polysulfides, polythionates, sulfite, or sulfate. Oxidation of sulfide is a complicated process. Upon treatment with an acid, sulfide salts convert to hydrogen sulfide: Instead sulfide converts to hydrosulfide: The sulfide ion, S 2−, does not exist in aqueous alkaline solutions of Na 2S. ![]() Hydrogen sulfide (H 2S) and bisulfide (SH −) are the conjugate acids of sulfide. Sulfide also refers to chemical compounds large families of inorganic and organic compounds, e.g. Solutions of sulfide salts are corrosive. Nothing herein constitutes permission, or recommendation to practice any invention covered by any patent without license from the owner of the patent.Sulfide ( British English also sulphide) is an inorganic anion of sulfur with the chemical formula S 2− or a compound containing one or more S 2− ions. Since conditions for use are beyond our control, we will make no guarantee of results, and assume no liability for damages incurred by off-loading, handling, or use of the product(s). Each user must establish appropriate procedures for off-loading, handling, and use of the product(s). However, no warranty is expressed or implied regarding the accuracy of this data, the results to be obtained from the use thereof, or that any use will not infringe any patent. The information in this bulletin is based on information available to us and on our observations and experiences. We pride ourselves on delivering quality products, technical support, and world-class customer service.Ĭontact Gaylord Chemical Request a Sample Gaylord Chemical has an extensive history as the preeminent producer of DMSO. The unique physical properties of DMSO makes it a useful solvent for a wide range of industrial applications.
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