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Styphnic acid, or 2,4,6-trinitro-1,3-benzenediol, is a yellow astringent acid that forms hexagonal crystals. It is used in the manufacture of dyes, pigments, inks, medicines, and explosives such as lead styphnate. It is itself a sensitive explosive, similar to picric acid.
Additional recommended knowledge
Preparation and chemistry
This compound is an example of a trinitro phenol.
It may be reacted with weakly basic oxides such as those of lead and silver to form the corresponding salts.
The solubility of picric acid and styphnic acid in water is far less than the non nitrated phenol and less than the corresponding mono and di nitro compounds so they may be purified by fractional crystallisation.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Styphnic_acid". A list of authors is available in Wikipedia.|