Crystal violet lactone
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Crystal violet lactone (CVL) is a
organic solvents
.
The central carbon in the
tetrahedral configuration, with four covalent bonds
.
In an acidic environment, the resonance structure
with the cation on nitrogen.
Transformation between leuco and colored form of crystal violet lactone, halochromism
It was the first dye used in
security marker for fuels
.
Its limitations as a fuel marker have to be carefully contemplated by users, as Crystal Violet Lactone (leuco) readily transforms to the colored species in >10% Ethanol Containing Gasoline, imparting a strong color. Crystal violet lactone as a fuel marker was covered by the BASF patent DE4422336A1 until June 2014.[1]
It may cause allergic contact dermatitis in people handling the carbonless copy paper.
References
- ^ Schloesser, Ulrike; et al. (1994). "Using Leukotriarylmethanen for marking hydrocarbons".