1,2-Ethanedisulfonic Acid → Taurine

HRID 514654

Reaction equation

[S:1]([CH2:5][CH2:6][S:7]([OH:10])(=[O:9])=[O:8])([OH:4])(=[O:3])=[O:2].[CH2:11]([NH2:17])[CH2:12][S:13]([O-:16])(=[O:15])=[O:14].[Na+:18]>>[NH2:17][CH2:11][CH2:12][S:13]([OH:16])(=[O:15])=[O:14].[S:1]([CH2:5][CH2:6][S:7]([O-:10])(=[O:9])=[O:8])([O-:4])(=[O:3])=[O:2].[Na+:18].[Na+:18]

Participants

Reactant 2

HCID 80321,2-Ethanedisulfonic Acid

HCID 23666486Sodium Taurate

Product 2

HCID 1123Taurine

HCID 79220Sodium 1,2-Ethanedisulfonate

Procedure

It has been found that ethionic acid can also be used to neutralize the sodium taurinate to yield taurine and sodium ethionate. After the separation of taurine, sodium ethionate is combined with equimolar ethionic acid and then treated with calcium oxide/calcium hydroxide to obtain sodium vinyl sulfate. In this variation of the cyclic process, sulfuric acid is eliminated from the process and production cost is further reduced.

Sources & evidence

ORD record: ord-79d8a957f034406a88e99f543d929c19
Source dataset: uspto-grants-2015_08
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09108907B1

Linked notes

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