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Hydrogen sulfide is a chemical compound with the formula H 2 S.It is a colorless chalcogen-hydride gas, and is toxic, corrosive, and flammable, with trace amounts in ambient atmosphere having a characteristic foul odor of rotten eggs. [11]
Hydrogen fluoride-based life Hydrogen fluoride has been considered as a possible solvent for life by scientists such as Peter Sneath. [citation needed] Hydrogen sulfide biochemistry Non-water solvents Hydrogen sulfide-based life Hydrogen sulfide is a chemical analog of water, but is less polar and a weaker inorganic solvent. [citation needed]
Palladium(II,IV) fluoride – PdF 3; Palladium sulfate – PdSO 4 [206] ... Hydrogen sulfide (sulfane) – H 2 S; Pyrosulfuric acid – H 2 S 2 O 7; Sulfamic acid ...
Treatment of sulfur with hydrogen gives hydrogen sulfide.When dissolved in water, hydrogen sulfide is mildly acidic: [5] H 2 S ⇌ HS − + H +. Hydrogen sulfide gas and the hydrosulfide anion are extremely toxic to mammals, due to their inhibition of the oxygen-carrying capacity of hemoglobin and certain cytochromes in a manner analogous to cyanide and azide.
Many gases have toxic properties, which are often assessed using the LC 50 (median lethal concentration) measure. In the United States, many of these gases have been assigned an NFPA 704 health rating of 4 (may be fatal) or 3 (may cause serious or permanent injury), and/or exposure limits (TLV, TWA/PEL, STEL, or REL) determined by the ACGIH professional association.
In addition to being toxic, hydrogen sulfide in the presence of water also damages piping and other equipment handling sour gas by sulfide stress cracking. Natural gas typically contains several ppm of volatile sulfur compounds, but gas from one well in Canada is known to contain 90% hydrogen sulfide and others may have H 2 S contents in the ...
Hydrogen peroxide is a typical oxidant—for example, with dimethyl sulfide (S(CH 3) 2): [9] S(CH 3) 2 + H 2 O 2 → OS(CH 3) 2 + H 2 O OS(CH 3) 2 + H 2 O 2 → O 2 S(CH 3) 2 + H 2 O. In analogy to their easy alkylation, sulfides bind to metals to form thioether complexes. Consequently, Lewis acids do not decompose thioethers as they do ethers ...
Some compounds described as salts of the sulfide dianion contain primarily hydrosulfide. For example, the hydrated form of sodium sulfide, nominally with the formula Na 2 S · 9 H 2 O, is better described as NaSH · NaOH · 8 H 2 O. The UV–visible spectrum of septic sewage from three different sites.