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fuming sulfuric acid

alt. (context inorganic compound English) Any solution of sulfur trioxide in sulfuric acid; it contains pyrosulfuric acid, and is used in the manufacture of nitroglycerine etc. n. (context inorganic compound English) Any solution of sulfur trioxide in sulfuric acid; it contains pyrosulfuric acid, and is used in the manufacture of nitroglycerine etc.

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Fuming sulfuric acid
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