Oxyhydrogen flame

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Oxyhydrogen flame when melting tungsten

An oxyhydrogen flame produced during the combustion of hydrogen and oxygen . The flame is colorless and therefore invisible. However, since substances such as potassium hydroxide (KOH) can be used in the production of oxyhydrogen (electrolyte to make the water conductive), parts of the KOH can be carried away with the oxyhydrogen and a slightly purple glowing flame is created. The oxyhydrogen flame has a temperature of approx. 3000 degrees Celsius.


  • The oxyhydrogen flame is used in the industrial production of glass under the name " fire polish ".
  • When processing precious stones under the name of hydrogen-oxygen cutting torch .
  • When welding
  • In goldsmithing : There the very finely tapering tip of the oxyhydrogen flame is sometimes used to carry out the finest goldsmithing work to a very limited extent, e.g. B. Repairs
  • Melting z. B. of quartz glass


Some models of oxyhydrogen lamps were invented, for example the Drummondian light . Because of the explosiveness of the gas mixture, all devices at that time were more or less dangerous. The oxyhydrogen flame found an important application in the processing of platinum , since this metal can only be melted in the oxyhydrogen flame or in the electric furnace; and also in the manufacture of Drummond's lights, which were used to illuminate theater stages. However, these two applications have been supplanted by electric blast furnaces and electric light.

Individual evidence

  1. University of Potsdam: Experimental Lecture Inorganic Chemistry WS 2000/2001 ( Memento of the original from June 20, 2007 in the Internet Archive ) Info: The archive link has been inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. Source for flame temperature in PDF on page 24. @1@ 2Template: Webachiv / IABot / www.chem.uni-potsdam.de