ARS PESTICIDE PROPERTIES DATABASE last updated Oct 1, 2001 name: ANCYMIDOL CASRN: 12771-68-5 SELECTED VALUES FOR MODELING PURPOSES (from Hornsby, et al., 1996) WATER SOLUBILITY (mg/L): 650 FIELD HALF-LIFE (days): 120 SOIL ORGANIC CARBON SORPTION (Koc, mL/g): 120 VAPOR PRESSURE (mm Hg): 2 x 10-7 PUBLISHED AND MANUFACTURER VALUES AND SOURCES molecular formula: C15H16N2O2 molecular weight : 256.31 physical state : S (L=liquid; G=gas; S=solid) reference: 9ACHB2 _________________________________________________________________________ Key to sources: (M)Manufacturer, (R)eview, (H)andbook, (E)xperiment, (C)alculated, (U)nknown, (P)EPA data, (W)auchope * denotes a selected value where multiple values of a property are listed. _________________________________________________________________________ -value- -medium- -temp- -pH- -source- -reference- Boiling point(deg C): - Melting point(deg C): 110 - 111 H 9ACHB2 Decomposition point(deg C): - Heat of vaporization(deg C): --RATE CONSTANTS-- Hydrolysis (per day): <0.023* 25 5-9 H 6DOWCH Photolysis (per day): Vapor pressure (mPa): <0.13 25 H 9ACHB2 1983 ED. 2.7E-2* 25 M 7LILLY Water solubility (ppm): -temp- -source- -reference- 440* 20 M 6DOWCH 650 H 9ACHB2 1983 ED. C EESADV M 7LILLY Organic solubility (ppm): Henrys law (Pa m3/mol): 1.58E-6* M 6DOWCH Octanol/water partitioning (log Kow): 1.91* M 6DOWCH Acid dissociation (pKa): Soil sorption: soiltype temp. Kd Koc %om pH source reference 120 R EESADV 83* SAND 25 0.11 58 0.33 7.0 M 6DOWCH LOAM 25 0.73 90 1.40 7.6 M 6DOWCH SANDY LOAM 25 0.55 77 1.22 6.9 M 6DOWCH CLAY LOAM 25 0.82 68 2.07 7.9 M 6DOWCH Field Dissipation halflife(days): value test area pH source reference Halflife in soil: Soiltype aerobic anaerobic source reference SANDY 15* M 6DOWCH Comments: SOIL SORPTION KOC VALUE =83(58-120) HYDROLYSIS -NONE IN 30 DAYS AT pH5-9