1 hydrosulfurous acid | Definition of hydrosulfurous acid
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hydrosulfurous acid

noun
hy·​dro·​sulfurous acid | \ "+...-\

Definition of hydrosulfurous acid

: an unstable acid H2S2O4 known only in aqueous solution formed by reducing sulfurous acid or in the form of salts —not used scientifically

— called also dithionous acid, hyposulfurous acid

History and Etymology for hydrosulfurous acid

hydrosulfurous International Scientific Vocabulary hydr- + sulfurous

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