METHOD FOR PRODUCING MONOALKYL SULFATE

PROBLEM TO BE SOLVED: To provide a method for producing high purity monoalkyl sulfate by reacting dialkyl sulfate and alkali metal salt in an organic solvent.SOLUTION: There is provided the method for producing monoalkyl sulfate by reacting dialkyl sulfate represented by the formula (I) and an alkal...

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Hauptverfasser: FUJINO TATSUO, TOYAMA YOHEI, KOTO YUICHI, SHIKITA SHOJI
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide a method for producing high purity monoalkyl sulfate by reacting dialkyl sulfate and alkali metal salt in an organic solvent.SOLUTION: There is provided the method for producing monoalkyl sulfate by reacting dialkyl sulfate represented by the formula (I) and an alkali metal salt represented by the formula (II). (I) (II), where R represents an alkyl group having 1 to 18 carbon atoms or a haloalkyl group having 1 to 18 carbon atoms, Mrepresents a lithium ion, a sodium ion or a potassium ion and Xrepresents an anion species having a primary acid dissociation constant (pKa1) in a water of conjugate acid thereof of 10. 【課題】ジアルキル硫酸とアルカリ金属塩を有機溶媒中で反応させることで高純度なモノアルキル硫酸塩の製造方法を提供する。【解決手段】式(I)で表されるジアルキル硫酸と式(II)で表されるアルカリ金属塩を有機溶媒中で反応させることを特徴とするモノアルキル硫酸塩の製造方法。(式中、Rは炭素数1〜18のアルキル基又は炭素数1〜18のハロアルキル基を示し、M+はリチウムイオン、ナトリウムイオン、又はカリウムイオンを示し、X−はその共役酸の水中における第一酸解離定数(pKa1)が10以下のアニオン種を示す。)【選択図】なし