ARS PESTICIDE PROPERTIES last update May 1995
name:CHLORIMURON ET CASRN: 90982-32-4
molecular formula: C15H15CLN4O6S
molecular weight : 414.8
physical state : S
(L=liquid; G=gas; S=solid)
reference: 9ACHB2
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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.
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-value- -medium- -temp- -pH- -source- -reference-
Boiling point(deg C):
-
Melting point(deg C):
180 - 182 M 9DUPON
Decomposition point(deg C):
-
Heat of vaporization(deg C):
--RATE CONSTANTS--
Hydrolysis (per day):
0.041* 25 5 M 9DUPON
<<<0.2* 25 7-9 M 9DUPON
Photolysis (per day):
0.0194 SOIL 25 5.8 M 9DUPON,1999
0.026* WATER 25 7 M 9DUPON
0.058 WATER 25 5 M 9DUPON
0.019 WATER 25 9 M 9DUPON
Vapor pressure (mPa):
5.33E-7* 25 M 9DUPON,1999
Water solubility (ppm): -temp- -pH- -source- -reference-
1200* 25 7 M 9DUPON
9 25 5 M 9DUPON
Organic solubility (ppm):
Henrys law (Pa m3/mol):
1.84E-10* 25 7 M 9DUPON,1999
2.46E-8 25 5 M 9DUPON,1999
Octanol/water partitioning (log Kow):
0.36 25 7 M 9DUPON
Acid dissociation (pKa):
4.2 25 M 9DUPON
Soil sorption:
soiltype temp. Kd Koc %om pH source reference
SANDY LM(MD) 25 0.43 35 2.1 6.5 M 9DUPON
SILT LM(IL) 25 3.2 128 4.3 5.4 M 9DUPON
SILT LM(DE) 25 7.4 170 7.5 5.2 M 9DUPON
SANDY LM(DE) 25 0.19 30 1.1 6.6 M 9DUPON
Field Dissipation halflife(days):
value test area pH %OM source reference
21(14-42)*
40 M 9DUPON
14-28 NEWARK(DE) 6.4 2.8 M 9DUPON
28-42 ROCHELLE(IL) 6.7 6.7 M 9DUPON
<14 STONEVILLE(MS) 6.4 1.4 M 9DUPON
<14 FAYETTEVILLE(NC) 5.9 M 9DUPON
Halflife in soil:
Soiltype aerobic anaerobic source reference
SANDY LOAM 53 M 9DUPON,1999
SILT LOAM 53 M 9DUPON,1999
Comments:
HENRYS LAW VALUE AT PH7; OCTANOL WATER=PH7;
AEROBIC=PH5; SOIL SORPTION KOC=91(35-170)