ARS PESTICIDE PROPERTIES DATABASE last updated Oct 1, 2001 name:ACEPHATE CASRN: 30560-19-1 SELECTED VALUES FOR MODELING PURPOSES (from Hornsby, et al., 1996) WATER SOLUBILITY (mg/L): 818000 FIELD HALF-LIFE (days): 3 SOIL ORGANIC CARBON SORPTION (Koc, mL/g): 2 VAPOR PRESSURE (mm Hg): 1.7 x 10-6 PUBLISHED AND MANUFACTURER VALUES AND SOURCES molecular formula: C4H10NO3PS molecular weight : 183.16 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): 93 - H 9ACHB2 Decomposition point(deg C): - Heat of vaporization(deg C): --RATE CONSTANTS-- Hydrolysis (per day): Photolysis (per day): Vapor pressure (mPa): 2.3E-1* 24 H 9PMED8 Water solubility (ppm): -temp- -source- -reference- 6.5E05 C EESADV 7.9E05 20 H 9ACHB2 1983 ED. 6.5E05 C 8GLEAM 8.18E05* 20 M 8VALUS Organic solubility (ppm): >1E+5* ACETONE >1E+5* ETHANOL <5E+4* AROMATIC SOLV. Henrys law (Pa m3/mol): 5.15E-8* 23 H 9PMED8 M 8VALUS Octanol/water partitioning (log Kow): Acid dissociation (pKa): Soil sorption: soiltype temp. Kd Koc %om pH source reference 300 C 8GLEAM 3* R EESADV <3 M 8VALUS Field Dissipation halflife(days): value test area pH %OM source reference 6(2-10)* 2 C 8GLEAM 7-10 H 9ACHB2 1983 ED. Halflife in soil: Soiltype aerobic anaerobic source reference 3 M 8VALUS Comments: