"Negative X" fire starts with water (Zinc, Ammonium nitrate and Sodium chloride)

Uploaded by CforChemistryHD on 24.01.2010

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None of the above experiment should be repeated on your own.
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The mixture containing Ammonium nitrate and Sodium chloride.
In which Ammonium nitrate behaves as an oxidizer, Sodium chloride provides chloride ion as a catalyst.
Chloride catalytically decompose Ammonium nitrate into Nitrous oxide and water.
Water provides the medium for the above reaction.
The powder mixture is then added to an evaporating basin inside in a fume-cupboard.
Adding Zinc powders to the mixture will form a water sensitive mixture.
High humidity or water of crystallization may cause accidental ignition.
A drop of water initiates the reaction, in which Zinc is oxidized.
The mixture bursts into flame.
Zinc oxide is yellow in colour when hot.
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