Mist acid

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Fog acid is usually the name for a mixture of substances that consists of chlorosulfonic acid and sulfur trioxide with a mixing ratio of 60:40 or 50:50 . Both substances are highly hygroscopic and therefore produce dense, white mist in moist air , with hydrochloric and sulfuric acid being formed.

use

Fog acid was mainly used as a smoke agent or warfare agent with a fog effect. The mist acid was sprayed via atomizer nozzles, compressed air bottles and hand pumps and, depending on the wind strength, generated large, dense and caustic fields of mist. During the Second World War , the mixture of substances was also used to protect factories or military installations against air raids.

Other mist acids

The term mist acid is sometimes also applied to other substances that generate dense fog when they come into contact with moisture from the air, including pure chlorosulphonic acid, titanium (IV) chloride or silicon tetrachloride . With all of the substances mentioned, the resulting mist consists of hydrochloric acid.

safety instructions

The resulting acids, hydrogen chloride and sulfuric acid, have a corrosive effect on the skin, mucous membranes and eyes.

See also

Individual evidence

  1. The former Schickert works in Bad Lauterberg - a chapter of the Harz armaments and industrial history .
  2. M. Weltschev, R. Bäßler: Resistance of high-alloy special stainless steels and nickel-based alloys as tank wall materials for containers for the transport of hazardous goods and substances hazardous to water. Retrieved July 8, 2019 . (PDF file; 6.3 MB) , Research Report 276, Berlin 2006.
  3. ^ Underground tanks with fog acid recovered and disposed of ( memento from July 20, 2012 in the web archive archive.today ). Buchen Group, May 26, 2005.