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A picrate is a salt or an ester of picric acid (a 2,4,6-trinitrophenol). But it could also be an additional compound which picric acid forms with many aromatic hydrocarbons, aromatic amines, aliphatic amines, alkalines, and other compoundsThese additional compounds are also called picrates even that they are not a salt of picric acid.
The picrate ion has yellow color. Many picrates are explosives, for example ammonium picrate (known as Dunnite). Some are used as primary explosives, namely lead picrate or potassium picrate which find their use as primers for cartridge ammunition. Ferrous picrate is used in some applications as a diesel fuel additive to achieve better mileage.
Picrates of some metals tend to be significantly more sensitive to impact and friction than picric acid itself (therefore storage of picric acid and mixtures containing it in containers made of these metals is strongly discouraged).
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Picrate". A list of authors is available in Wikipedia.|