8492_Chemichal Weapons Production Indicators
... Phosgene is used as an intermediate in the manufacture of many organic chemicals. The largest amount (approximately 80% of world production) is used to produce toluene diisocyanate and other isocyanates. ...
... Phosgene is used as an intermediate in the manufacture of many organic chemicals. The largest amount (approximately 80% of world production) is used to produce toluene diisocyanate and other isocyanates. ...
The Impact of Yeast on Wine Aroma and Flavor: The Good, the Bad
... Due to release of reduced sulfide from the enzyme complex sulfite reductase Reduction of sulfate decoupled from amino acid synthesis Sulfate reduction regulated by nitrogen availability Lack of nitrogenous reduced sulfur acceptors leads to excessive production of reduced sulfate and release as ...
... Due to release of reduced sulfide from the enzyme complex sulfite reductase Reduction of sulfate decoupled from amino acid synthesis Sulfate reduction regulated by nitrogen availability Lack of nitrogenous reduced sulfur acceptors leads to excessive production of reduced sulfate and release as ...
Hydrogen sulfide
Hydrogen sulfide is the chemical compound with the formula H2S. It is a colorless gas with the characteristic foul odor of rotten eggs; it is heavier than air, very poisonous, corrosive, flammable, and explosive.Hydrogen sulfide often results from the bacterial breakdown of organic matter in the absence of oxygen gas, such as in swamps and sewers; this process is commonly known as anaerobic digestion. H2S also occurs in volcanic gases, natural gas, and in some sources of well water. It is also present in natural halite type rock salts, most notably in Himalayan Black Salt, which is mostly harvested from the mineral-rich ""Salt Range"" mountains of Pakistan. The human body produces small amounts of H2S and uses it as a signaling molecule.Dissolved in water, hydrogen sulfide is known as hydrosulfuric acid or sulfhydric acid, a weak acid.Swedish chemist Carl Wilhelm Scheele is credited with having discovered hydrogen sulfide in 1777.The British English spelling of this compound is hydrogen sulphide, but this spelling is not recommended by the International Union of Pure and Applied Chemistry or the Royal Society of Chemistry.In 2015, hydrogen sulfide under extremely high pressure (around 150 gigapascals) was found to undergo superconducting transition near 203K (-70 °C), the highest temperature superconductor known to date.