... is hydrolysed in the presence ofstrong acids or alkalis. At 70C, no significant hydrolysisCcurs at pH 5, 7, or 9. pKa:4.3 ... , weak base. APPLICATIONSBiochemistry: Photosynthetic electron transport inhibitor at the photosystem II ... the apical meristems.Uses: Used pre-emergence in winter cereals, at 1-2 kg a.i./ha, to control blackgrass and ...