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thiosulfonic acid

noun
thio·​sulfonic acid | \¦thīə+...-\

Definition of thiosulfonic acid 

: any of a series of unstable acids of the general formula RSO2SH derived from sulfonic acids by replacement of oxygen by sulfur and known only in the form of salts and esters

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History and Etymology for thiosulfonic acid

thiosulfonic from thi- + sulfonic

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