hydrodesulfurization hds is a catalytic chemical process widely used to remove sulfur s from natural gas and from refined petroleum products, such as gasoline or petrol, jet fuel, kerosene, diesel fuel, and fuel oils. the purpose of removing the sulfur, and creating products such as ultra-low-sulfur diesel,.
mustard gas, though technically not a gas and often called sulfur mustard by scholarly sources, is the prototypical substance of the sulfur-based family of cytotoxic and vesicant chemical warfare agents, which can form large blisters on exposed skin and in the lungs.
fluid catalytic cracking fcc is one of the most important conversion processes used in petroleum refineries. it is widely used to convert the high-boiling, high-molecular weight hydrocarbon fractions of petroleum crude oils into more valuable gasoline, olefinic gases, and other products.
products containing sulfacetamide and sulfur a keratolytic are commonly promoted for the treatment of acne rosacea rosacea with papules, pustules, or both . there are several prescription topical products containing sulfacetamide, such as foams, shampoos, cream and washes.
the structure of the sulfite anion can be described with three equivalent resonance structures.in each resonance structure, the sulfur atom is double-bonded to one oxygen atom with a formal charge of zero neutral , and sulfur is singly bonded to the other two oxygen atoms, which each carry a formal charge of −1, together accounting for the −2 charge on the anion.
the kraft process also known as kraft pulping or sulfate process is a process for conversion of wood into wood pulp, which consists of almost pure cellulose fibers, the main component of paper. the kraft process entails treatment of wood chips with a hot mixture of water, sodium hydroxide naoh ,.
sulfolane is classified as a sulfone, a group of organosulfur compounds containing a sulfonyl functional group. the sulfone group is a sulfur atom doubly bonded to two oxygen atoms and singly bonded to two carbon centers. the sulfur-oxygen double bond is polar, conferring good solubility in water, while the four carbon ring provides non-polar stability.
small amounts of carbon disulfide are released by volcanic eruptions and marshes. cs 2 once was manufactured by combining carbon or coke and sulfur at high temperatures. c 2s cs 2. a lower-temperature reaction, requiring only 600 c, utilizes natural gas as the carbon source in the presence of silica gel or alumina catalysts:
a siloxane is a functional group in organosilicon chemistry with the si–o–si linkage. the parent siloxanes include the oligomeric and polymeric hydrides with the formulae h osih 2 n oh and osih 2 n. siloxanes also include branched compounds, the defining feature of which is that each pair of silicon centres is separated by one oxygen atom.
sulfur dioxide is an intermediate in the production of sulfuric acid, being converted to sulfur trioxide, and then to oleum, which is made into sulfuric acid. sulfur dioxide for this purpose is made when sulfur combines with oxygen. the method of converting sulfur dioxide to sulfuric acid is called the contact process. several billion kilograms are produced annually for this purpose.