Ecotoxicology:
Algae:
50 (5 d) for
Selenastrum capricornutum 2.0,
Anabaena flos-aquae 2.7
mg/l.Bees:Not toxic to bees;
LD
50 (contact) >11 µg/bee.Birds:Acute oral
LD
50 for bobwhite quail 683
mg/kg. Dietary
LC
50 (8 d) for bobwhite quail
c. 5200, mallard ducks >5200
mg/
kg diet.Daphnia:
LC
50 (48 h) 6.2
mg/l.Fish:
LC
50 (96 h) 5-13
mg/l (various fish species).Worms:
LD
50 for earthworms >1000
mg/
kg substrate.Other beneficial spp.:Harmless to carabids. No effect on soil microflora.
Environmental fate:
Animals:Metabolised and excreted mainly as hydroxylated conjugates. For fate in animals, see K. I. Beynon & A. N. Wright,
Residue Rev., 1972,
43, 23; A. Verloop,
ibid., 1972,
43, 55.Soil:Has a low leaching potential. In soil, dichlobenil gradually undergoes microbial degradation to 2,6-dichlorobenzamide, which is slowly broken down to 2,6-dichlorobenzoic acid. Half-life of dichlobenil in soil may vary between 1 and 6 months, depending on Plant:The soil metabolite 2,6-dichlorobenzamide can be taken up by plants via the roots. Plant metabolism involves ring hydroxylation (at the 3-position and, to a lesser extent, at the 4-position) of both dichlobenil and 2,6-dichlorobenzamide.
WATER SOLUBILITY: 21 mg/l at 25°C