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Sulfur sticks

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Ammonia detection tool
Sulfur sticks sold in a bundle

Sulfur sticks are tools used in industrial ammonia refrigeration systems to detect minor ammonia leaks. A sulfur stick is made from a wick which contains particles of sulfur. The sulfur stick is lit and burns with an open flame, and the color of the sulfur smoke is used to find the leak. When there is no ammonia present, the smoke is colorless, but the combination of sulfur and ammonia vapors produce a white fog.

The reaction between the sulfur dioxide formed by burning the stick and ammonia gas mainly produces ammonium sulfite. The monohydrate and metabisulfite of this substance is also formed.

See also

References

  1. Williams, Jeremy (May 14, 2019). "Ammonia Leak – Sulfur Stick – Burning | Online Industrial Training". Garden City Ammonia Program. Retrieved 2024-11-07.
  2. Refrigeration Engineering. U.S. Office of Technical Services. 1940. p. 4.
  3. "ACCIDENT PREVENTION AND RESPONSE MANUAL for Anhydrous Ammonia Refrigeration System Operators" (PDF). U.S. Environmental Protection Agency Region 7. May 2015.
  4. Guo, Yanxia; Liu, Zhenyu; Huang, Zhanggen; Liu, Qingya; Guo, Shijie (2005-12-01). "Reaction Behavior of Sulfur Dioxide with Ammonia". Industrial & Engineering Chemistry Research. 44 (26): 9989–9995. doi:10.1021/ie050734q. ISSN 0888-5885.
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