90th% mean on seven half-lives from registrant submitted guideline studies results in 0.5 day half-life input parameter(See Table 4). However, GLN 835.4100 stipulates soil moisture 41721701 Soil Half-life or Aerobic Soil at 40%-60% of water holding capacity Metabolism Half-life (days) and malathion rapidly hydrolyzes. Malathion 1 46769501 and Reference Non-guideline studies indicate that Temperature persistence is increased in soils with 47834301 low moisture and low microbial activity (Walker and Stojanovic 1973). To account for the contribution of hydrolysis to in metabolism studies, the input parameter is doubled. MWT or Molecular Weight Product Malathion 330.36 (g/mol) Chemistry Vapor Pressure (Torr) at Product Malathion 4 × 10-5 30oC Chemistry Solubility in Water @ 25 Product OC, pH not reported Malathion 145 Chemistry (mg/L) Willis & 90th% mean on 37 malathion residue Foliar Half-life (days) Malathion 6.1 McDowell, foliar persistence half-lives ranging 1987 from 0.3 to 10.9 days Heat of Henry Malathion 54,000 J/mol EPI Suite Malathion Use Number of Applications Malathion Summary Assumed Date selected within wettest month See Results on type Dates which malathion could be reasonably of applied to a given crop. application Malathion Malathion Use Maximum single application rate for Amount Summary the crop or use pattern table
Soil Half-life or Aerobic Soil Metabolism Half-life (days) and Reference Temperature Malathion 1 41721701 46769501 47834301 90th% mean on seven half-lives from registrant submitted guideline studies results in 0.5 day half-life input parameter(See Table 4). However, GLN 835.4100 stipulates soil moisture at 40%-60% of water holding capacity and malathion rapidly hydrolyzes. Non-guideline studies indicate that persistence is increased in soils with low moisture and low microbial activity (Walker and Stojanovic 1973). To account for the contribution of hydrolysis to in metabolism studies, the input parameter is doubled. MWT or Molecular Weight (g/mol) Malathion 330.36 Product Chemistry Vapor Pressure (Torr) at 30oC Malathion 4 × 10-5 Product Chemistry Solubility in Water @ 25 OC, pH not reported (mg/L) Malathion 145 Product Chemistry Foliar Half-life (days) Malathion 6.1 Willis & McDowell, 1987 90th% mean on 37 malathion residue foliar persistence half-lives ranging from 0.3 to 10.9 days Heat of Henry Malathion 54,000 J/mol EPI Suite Number of Applications Malathion Malathion Use Summary Dates Malathion See Results Assumed on type of application Date selected within wettest month which malathion could be reasonably applied to a given crop. Amount Malathion Use Summary table Maximum single application rate for the crop or use pattern
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