1891-95-8

Chloroxynil is an obsolete herbicide that was used to control broadleaved weeds.

Chloroxynil is used as pharmaceutical intermediates.

Production information for Chloroxynil is absent in the general literature. However, as a chlorinated analogue of bromoxynil, chloroxynil would have been manufactured by selective chlorination of a hydroxy substituted benzonitrile precursor, typically 4 hydroxybenzonitrile, followed by controlled introduction of chlorine atoms at the 3 and 5 positions of the aromatic ring. The resulting 3,5 dichloro 4 hydroxybenzonitrile would then be purified by crystallisation to yield technical grade chloroxynil.

Selective, contact action with some systenic activity. Inhibits photosynthesis

Herbicide