ARS PESTICIDE PROPERTIES DATABASE last updated May 1995 name: IMAZAQUIN ACID CASRN: 81335-37-7 molecular formula: C17H17N3O3 molecular weight: 311.3 physical state: S (L=liquid; G=gas; S=solid) reference: 9PMED9 __________________________________________________________________________ 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): 219 - 224 H 9PME10 Decomposition point (deg C): 224 H 9PME10 Heat of vaporization (deg C): --RATE CONSTANTS-- Hydrolysis (per day): Photolysis (per day): Vapor pressure (mPa): <0.013 60 H 9PME10 Water solubility (ppm): 60 25 P 6USEPA 60-120 H 9ACHB2 1983 R WEESAG 37: 712-718 (1989) Organic solubility (ppm): 400 TOLUENE 25 H 9PME10 6.8E4 DIMETHYLFORMAMIDE 25 H 9PME10 1.59E5 DIMETHYL SULFOXIDE 25 H 9PME10 1.4E4 DICHLOROMETHANE 25 H 9PME10 Henrys law (Pa m3/mol): Octanol/water partitioning (log Kow): 0.34 22 H 9PME10 Acid dissociation (pKa): 3.8 H 9PMED9 E WEESA6 36: 78-83 (1988) E 6RAOKR pp. 53-63 (1978) Soil sorption: soiltype temp. Kd Koc %om pH reference -------- ----- -- --- --- -- --------- 15 5.3 6USEPA 16 5.3 6USEPA 19 5.3 6USEPA 17-36 6GERST 4- 7.8- WEESAG 37: 712-718 (1989) 245 4.5 AV.75 2638 5 WEESA6 38: 67-73 (1990) 541 6 WEESA6 38: 67-73 (1990) SANDY CLAY 359 7 WEESA6 38: 67-73 (1990) SANDY LOAM 125 5 WEESA6 38: 67-73 (1990) 20* 7 W Field dissipation halflife(days): value test area pH source reference ----- --------- -- ------ --------- 30-90 H 9PMED9 7-30 H 9ACHB2 1983 60-120 R WEESAG 37: 712-718 (1989) 60* W Halflife in soil: soiltype aerobic anaerobic source reference -------- ------- --------- ------ --------- Comments: