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並前往https://www.mysciencework.com/patent/show/process-recovering-gammabutyrolactone-from-mixture-heavy-organics-US6299736A

Process for recovering .gamma.-butyrolactone from a mixture ...

butyrolactone from a mixture of heavy organics: Gamma-Butyrolactone (GBL) is ... to that of GBL, by solvent extraction with a dual solvent of water and a ...

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