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sulfurous acid

2 ENTRIES FOUND:
  1. sulfurous acid (noun)
  2. sulfurous anhydride (noun)

sulfurous acid

noun

Definition of SULFUROUS ACID

: a weak unstable dibasic acid H2SO3 known in solution and through its salts and used as a reducing and bleaching agent
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First Known Use of SULFUROUS ACID

1790

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