ARS PESTICIDE PROPERTIES DATABASE last updated May 1995 name: MONURON CASRN: 150-68-5 molecular formula: C9H11CLN2O molecular weight: 198.7 physical state: S (L=liquid; G=gas; S=solid) reference: 9PMED7 __________________________________________________________________________ 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): 185 - 200 H 6MONTG Melting point (deg C): 174 - 175 H 6MONTG Decomposition point (deg C): 200 H 6MONTG Heat of vaporization (deg C): --RATE CONSTANTS-- Hydrolysis (per day): 3.9E-3 20 13.7 H 6MONTG Photolysis (per day): Vapor pressure (mPa): 0.067* 25 H 9PMED7 H 9ACHB2 1983 8.9 25 C SCSFAD 44: 1-8 (1985) E PSSCBG 12: 37-44 (1981) Water solubility (ppm): 230 25 H 9PMED7 H 6DEGRA E ADCSAJ 111: 55-120 (1972) Organic solubility (ppm): 5.2E4 ACETONE 27 H 6MONTG Henrys law (Pa m3/mol): Octanol/water partitioning (log Kow): 1.46 H 6MONTG 2.12 H 6MONTG Acid dissociation (pKa): Soil sorption: soiltype temp. Kd Koc %om pH reference -------- ----- -- --- --- -- --------- 163 9OCHS2 V.1: 51-143 (1972) 100 6ECBEN 4: 26-38 (1980) 184 9EINSP pp. 23-67 (1980) 50 JAFCAU 29: 1050-1059(1981) 100 6AJSOR 19: 61-68 (1981) 43 6AJSOR 19: 61-68 (1981) 59 6AJSOR 19: 61-68 (1981) 45 6AJSOR 19: 61-68 (1981) 71 6AJSOR 19: 61-68 (1981) 61 6AJSOR 19: 61-68 (1981) 24 6AJSOR 19: 61-68 (1981) 47 6AJSOR 19: 61-68 (1981) 80 6AJSOR 19: 61-68 (1981) 28 6AJSOR 19: 61-68 (1981) 73 6AJSOR 19: 61-68 (1981) 71 6AJSOR 19: 61-68 (1981) 59 6AJSOR 19: 61-68 (1981) 59 6AJSOR 19: 61-68 (1981) 54 6AJSOR 19: 61-68 (1981) 66 6AJSOR 19: 61-68 (1981) 30 JPFCD2 PT.B 22:55-69(1987) RREVAH 103: 1-59 (1988) CMSHAF 10: 833-846 (1981) 83 6HAQUE pp. 115-133 (1975) 1800 6RENCT 99: 120-164 (1987) 74 6GERST 180 JEVQAA 16: 422-428 (1987) 542 CJSSAR 55: 127-135 (1975) 155 CJSSAR 55: 127-135 (1975) 133 CJSSAR 55: 127-135 (1975) 216 CJSSAR 55: 127-135 (1975) 97 CJSSAR 55: 127-135 (1975) 57 6WEEDS 14: 6-10 (1966) 172 6WEEDS 14: 6-10 (1966) 129 6WEEDS 14: 6-10 (1966) 160 6WEEDS 14: 6-10 (1966) 83 PSSCBG 12: 37-44 (1981) 150* W Field dissipation halflife(days): value test area pH source reference ----- --------- -- ------ --------- 150-345 C 6PRZMO 170 R RREVAH 85: 139-147 (1983) 166 C 6RENCT 99: 120-164 (1987) C JEVQAA 16: 422-428 (1987) C SCSFAD 44: 1-8 (1985) 150 R RREVAH 52: 89-115 (1974) 92 C 8CREAM 116 C 8CREAM 75 R 6ENVPE pp. 257-280 120-150 E 6CALIF 15: 10-11 (1961) 175 E WEREAT 7: 29-36 (1967) 259 E WEREAT 7: 29-36 (1967) 170* W Halflife in soil: soiltype aerobic anaerobic source reference -------- ------- --------- ------ --------- Comments: