Dictionary.com

pyrosulfuric acid

Save This Word!

noun Chemistry.

an oily, hygroscopic, corrosive liquid, H2S2O7, that, depending on purity, is colorless or dark brown: used chiefly as a dehydrating agent in the manufacture of explosives and as a sulfating or sulfonating agent in the manufacture of dyes.

QUIZZES

QUIZ YOURSELF ON AFFECT VS. EFFECT!

In effect, this quiz will prove whether or not you have the skills to know the difference between “affect” and “effect.”
Question 1 of 7
The rainy weather could not ________ my elated spirits on my graduation day.
Also called fuming sulfuric acid, oleum.

Origin of pyrosulfuric acid

First recorded in 1870–75
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

Scientific definitions for pyrosulfuric acid

pyrosulfuric acid
[ pī′rō-sŭl-fyurĭk ]

A heavy, oily, colorless to dark brown liquid produced by adding sulfur trioxide to concentrated sulfuric acid. It is used in petroleum refining and the manufacture of explosives. Chemical formula: H2S2O7.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Essays. Emails. Everything. Get Help Now!