Synthesis of hydroxy sulfonic acids

Organic compounds -- part of the class 532-570 series – Organic compounds – Sulfonic acids or salts thereof

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562108, 562110, 562111, 562 41, C07C30300

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active

049872508

ABSTRACT:
Hydroxy sulfonic acids in general and isethionic acid (2-hydroxy ethyl sulfonic acid) in particular can be prepared at 99+% purity and good yields by the selective oxidation of a precursor hydroxy mercaptan with hydrogen peroxide. The resulting product is pure enough to be used directly in the synthesis of sulfo-acrylic esters which are finding considerable use as stabilizers in producing vinylidene chloride copolymers used for FDA approved packaging films.

REFERENCES:
patent: 4239696 (1980-12-01), Schreyer et al.
patent: 4910330 (1990-03-01), McGee et al.
Chem Abst Sjoberg (1939), p. 2106(8).
Gilbert Sulfonation & Related Reactors (1965), p. 220.

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