1073-05-8Relevant articles and documents
Concentration of hydrophobic organic compounds and extraction of protein using alkylammoniosulfate zwitterionic surfactant mediated phase separations (cloud point extractions)
Saitoh, Tohru,Hinze, Willie L.
, p. 2520 - 2525 (1991)
The zwitterionic surfactants 3-[nonyl- (or decyl-) dimethylammonio]propyl sulfate, (C9-APSO4 or C10-APSO4) were synthesized using Nilsson's procedure, and their phase separation behavior under different experimental conditions was evaluated. The results indicate that such zwitterionic surfactants can be utilized for the extraction/preconcentration of hydrophobic species in a manner akin to that previously reported for nonionic surfactants. This was demonstrated for several practical applications including the extraction/preconcentration of some steroidal hormones and vitamin E prior to high-performance liquid chromatography analysis. The zwitterionic surfactant mediated phase separation was also applied to the extraction of the hydrophobic membrane protein, bacterio-rhodopsin, from the hydrophilic cytochrome c protein, both originally present In an aqueous phase. The concentration factors for this aqueous two-phase extraction technique using C10-APSO4 ranged from 26 to 35 with recoveries In the range 88 to > 96%. Some comparative studies Indicate that the use of zwittterionic surfactants In lieu of nonionic surfactants (e.g. polyoxyethylene(7.5) nonyl phenyl ether PONPE-7.5) In such an extraction method offers some significant advantages such as purer, homogeneous surfactant preparation, minimum background absorbance at UV detection wavelengths, the two-phase region occurring at lower temperatures, and greater extraction efficiencies/concentration factors among others.
METHOD OF OXIDIZING USING CALCIUM HYPOCHLORIDE AND MANUFACTURING FOR SULFONE OR SULFIDE
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Paragraph 0111-0114; 0116; 0117; 0131, (2020/06/11)
Is a process for preparing a sulphone or sulfate compound using calcium hypochlorite, and, wherein the method comprises introducing, sulfoxide or sulfite compound in an organic solvent and adding calcium hypochlorite in a solid state to an organic solvent in which the compound is introduced to oxidize the compound. (by machine translation)
Sulfate preparation method
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Paragraph 0074; 0075; 0076; 0077, (2018/09/11)
The invention relates to the field of organic synthesis, and especially relates to a sulfate preparation method. The invention provides a sulfate preparation method. According to the preparation method, a compound represented by a formula (II) reacts with sulfuryl fluoride in the presence of a reaction solvent to prepare a compound represented by a formula (I). During the sulfate preparation process, the introduction of water and chlorine ions is avoided effectively, the situation that the product is degraded and the chlorine ion content is high is avoided therefore; moreover, the steps of thepreparation method are simple and short, the raw material are common chemical products on the market, the kinds of raw materials and the side reactions are few, and the yield is high. The manufacturing cost is low, only recyclable organic solvents are used, the reaction byproduct is a single inorganic salt solid and can be easily recovered, no wastewater is generated, the environment is better protected, and the sulfate preparation method is green and environmentally friendly and is suitable for industrial large scale production.