ARS PESTICIDE PROPERTIES last update May 1995 name:ALACHLOR CASRN: 15972-60-8 molecular formula: C14H20C1NO2 molecular weight : 269.77 physical state : S (L=liquid; G=gas; S=solid) reference: 9HERBH,5,12(1983) _________________________________________________________________________ Key to sources: (M)Manufacturer, (R)eview, (H)andbook, (E)xperiment, (C)alculated, (U)nknown, (P)EPA data, (W)Wauchope * denotes a selected value where multiple values of a property are listed. _________________________________________________________________________ -value- -medium- -temp- -pH- -source- -reference- Boiling point(deg C): 100 - 0.020mmHg H 9PME10 Melting point(deg C): 40 - 41 H 9MERCK,10,189(1987) Decomposition point(deg C): 105 - H 9HERBH,5,12,1983 Heat of vaporization(deg C): Hydrolysis (per day): Photolysis (per day): .058* WATER NR M 9MONSA Vapor pressure (mPa): 4.13 25 E ACSMC8,225:236,1983 2660 100 H 9HERBH,5TH ED.,p.13,1983 2.93 25 H 9ACHB2 1983 ED. 1.86 25 M 9MONSA 2.9* 25 H 9PME10 Water solubility (ppm): -temp- -source- -reference- 242 25 H 9HERBH, 5:13,1983 148 25 R 9KUPSE, p.218,1980 200(SALT) 20 R ACSMC8, 225:236,1983 203 E ETOCDK 8:339-357,1989 240* 25 M 9MONSA 148 20 E WEESA6, 17(4):442,1969 Organic solubility (ppm): Henrys law (Pa m3/mol): 2.1E-03* 25 M 9MONSA Octanol/water partitioning (log Kow): 2.64 R 9HRLCP(RAO;DAVIDSON),1980 2.92 R CHREAY, 71:525,1971 2.90* 20 E ACSMC8, 225:236,1983 Acid dissociation (pKa): Soil sorption: soiltype temp. Kd Koc %om pH reference 209 EESADV, 4:28,1980 DRUMR SLTY CLAY 190 9ASTM1, 707:78,1980 120 JEVQAA 16:422-428,1987 161 ETOCDK 8:339-357,1989 168.3 9MONSA 190 SCSFAD 44:1-8,1985 SILT LOAM 3.7 109 3.4 6.2 9MONSA LOAMY SAND 1.3 54 2.4 4.7 9MONSA SILT 0.9 75 1.2 8.1 9MONSA SAND 0.3 43 0.7 6.5 9MONSA LINTONIA LOAM 0.35 87 0.7 9MONSA DUPO SILT LOAM 0.88 130 1.2 9MONSA SPINKS SND LOAM 1.3 94 2.4 9MONSA DRUMMER SLTY CLAY 3.7 190 3.4 9MONSA 124* Field Dissipation halflife(days): value test area pH source reference 27(7.1-81)* 14-21 H 9HERBH 14 E ETOCDK 8:339-357,1989 42-70 H 9ACHB2 1983 ED. 18 E JEVQAA 16:422-428,1987 14-29 SOIL 8-80 M 9MONSA 16-66 SOIL 5-81 M 9MONSA 7.1 M 9MONSA 11.7 M 9MONSA 15.5 M 9MONSA 17.7 M 9MONSA 19-26 SOIL 7-80 M 9MONSA Halflife in soil: Soiltype aerobic anaerobic source reference SILT LOAM ca21 M 9MONSA LOAMY SAND ca21 M 9MONSA SILT ca14 M 9MONSA Comments: SOIL SORPTION KOC VALUE 124 = 124(43-209)