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FXi'OXNi: r PIP - MnNCOLI I3 <br />@://ace.orst.edu/cgi-bin/iiii's/01/pips/inancozeb.htni <br />organisms. Reported 48-hour LC50 are 9 mg/L in goldfish, 2.2 mg/L in rainbow trout, 5.2 mg/L in <br />catfish, and 4.0 mg/L in carp [4]. The reported 72 -hour LC50 for mancozeb in crayfish is greater <br />than 40 mg/L; the 48-hour LC50 is 3.5 mg/L in tadpoles [32]. <br />• Effects on other organisms: Mancozeb is not toxic to honeybees [4]. <br />Environmental Fate: <br />Breakdown in soil and groundwater: Mancozeb is of low soil persistence, with a reported field <br />half-life of 1 to 7 days [20]. Mancozeb rapidly and spontaneously degrades to ETU in the presence <br />of water and oxygen [10]. ETU may persist for longer, on the order of 5 to 10 weeks [20]. Because <br />mancozeb is practically insoluble in water, it is unlikely to infiltrate groundwater [3]. Studies do <br />indicate that ETU, a metabolite of mancozeb, has the potential to be mobile in soils [9]. However, <br />ETU has been detected (at 0.016 mg/L) in only 1 out of 1295 drinking water wells tested [10]. <br />Breakdown in water: Mancozeb degrades in water with a half-life of 1 to 2 days in slightly acidic <br />to slightly alkaline conditions [32]. <br />Breakdown in vegetation: When used as directed, mancozeb is not poisonous to plants [4]. <br />Physical Properties: <br />• Appearance: Mancozeb is a grayish -yellow powder [3]. <br />• Chemical Name: manganese ethylenebis(dithiocarbamate) (polymeric) [3] <br />• CAS Number: 8018-01-7 <br />• Molecular Weight: 266.31 <br />• Water Solubility: 6 mg/L [3] <br />• Solubility in Other Solvents: Practically insoluble in most organic solvents [3] <br />• Melting Point: Decomposes without melting @ 192 C [3] <br />• Vapor Pressure: Negligible @ 20 C [3] <br />• Partition Coefficient: Not Available <br />• Adsorption Coefficient: >2000 [20] <br />Exposure Guidelines: <br />• ADI: 0.03 mg/kg/day [33] <br />• MCL: Not Available <br />• RfD: 0.003 mg/kg/day [27] <br />• PEL: Not Available <br />• HA: Not Available <br />• TLV: Not Available <br />Basic Manufacturer: <br />DuPont Agricultural Products <br />Walker's Mill, Barley Mill Plaza <br />P.O.Box 80038 <br />Wilmington, DE 19880-0038 <br />• Phone: 800-441-7515 <br />• Emergency: 800-441-3637 <br />3 of 4 5/12/00 2:11 I'M <br />