Picrate
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A picrate is a salt or an ester of picric acid (a 2,4,6-trinitrophenol). 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 bullet primers. 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).
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