ARS PESTICIDE PROPERTIES last update May 1995
name:CHLORSULFURON CASRN: 64902-72-3
molecular formula: C12H12CLN5O4S
molecular weight : 357.8
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):
174 - 178 M 9DUPON,1999
Decomposition point(deg C):
-
Heat of vaporization(deg C):
--RATE CONSTANTS--
Hydrolysis (per day):
0.0289 25 5 M 9DUPON,1999
0.0005 25 7 M 9DUPON,1999
0.0010 25 9 M 9DUPON,1999
Photolysis (per day):
0.0087 SOIL 25 8 M 9DUPON,1999
0.0034 WATER 25 5 M 9DUPON,1999
STABLE WATER 25 7,9 M 9DUPON,1999
Vapor pressure (mPa):
3.07E-6 25 M 9DUPON,1999
Water solubility (ppm): -temp- -pH- -source- -reference-
3.18E+5 25 7 M 9DUPON
587 25 5 M 9DUPON
Organic solubility (ppm):
46776 ACETONE 25 M 9DUPON,1999
1.05660 DICHLOROMETHANE 25 M 9DUPON,1999
3.64E-3 HEXANE 25 M 9DUPON,1999
18963 METHANOL 25 M 9DUPON,1999
32370 TOLUENE 25 M 9DUPON,1999
26718 ACETONITRILE 25 M 9DUPON,1999
27716 ETHYL ACETATE 25 M 9DUPON,1999
2038 ISOPROPANEL 25 M 9DUPON,1999
Henrys law (Pa m3/mol):
6.8E-6* 25 M 9DUPON
Octanol/water partitioning (log Kow): -pH-
-1.0* 25 7 M 9DUPON
0.33 25 5 M 9DUPON
-1.40 25 9 M 9DUPON
Acid dissociation (pKa):
3.6* M 9DUPON
Soil sorption:
soiltype temp. Kd Koc %om pH source reference
Field Dissipation halflife(days):
value test area pH %OM source reference
18 MOSCOW,ID 6.1 2.2 M 9DUPON,1999
18 MADERA,CA 6.3 0.4 M 9DUPON,1999
39 AKRON,CO 6.9 1.0 M 9DUPON,1999
49 FARGO,ND 7.6 5.3 M 9DUPON,1999
40 KIMBERLY,ID 8.0 1.3 M 9DUPON,1999
69 AKRON,CO 8.2 1.2 M 9DUPON,1999
83 STETTLER,AB 6.9 4.4 M 9DUPON,1999
21 SWIFT CURRENT(SK) 6.1 1.0 M 9DUPON,1999
29 SASKATOON,SK 6.2 3.4 M 9DUPON,1999
40 FISHER BRANCH,MB 7.8 6.4 M 9DUPON,1999
23 NEWARK,DE 6.0 1.4 M 9DUPON,1999
154 ROCHELLE,IL 6.7 7.4 M 9DUPON,1999
185 CLAY CTR., NE 5.6 3.8 M 9DUPON,1999
10 CARRINGTON,ND 6.6 4.4 M 9DUPON,1999
64 ROSETOWN,SK 7.3 2.3 M 9DUPON,1999
Halflife in soil:
Soiltype aerobic anaerobic source reference
SILT LOAM(DE) 20 M 9DUPON
SILTY CLAY LOAM(NE) 13 M 9DUPON
LOAM(NE) 19 M 9DUPON
SANDY LOAM(NE) 88 M 9DUPON
LOAMY SAND(ITALY) 28 M 9DUPON
SILT LOAM(ITALY) 46 M 9DUPON
SANDY LOAM(UK) 13 M 9DUPON
Comments:
SOIL SORPTION KOC=36(14-60); AEROBIC=20(10-30)-TEN STUDIES(USA & CANADA).