ARS PESTICIDE PROPERTIES last update May 1995
name:CYANAZINE CASRN: 21725-46-2
molecular formula: C9H13CLN6
molecular weight : 240.7
physical state : S
(L=liquid; G=gas; S=solid)
reference: 9ACHB2,2ND ED.,1987
_________________________________________________________________________
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):
168 - 169 E PSSCBG,V.17(4),P.366,1986
Decomposition point(deg C):
-
Heat of vaporization(deg C):
--RATE CONSTANTS--
Hydrolysis (per day):
0.0046* 25 5 M 9DUPON
STABLE* 25 7,9 M 9DUPON
Photolysis (per day):
0.099* SOIL(0.7%OM 25 6.4 M 9DUPON
0.016* WATER 25 7.0 M 9DUPON
Vapor pressure (mPa):
2.13E-04* 20 H 9HERBH,5TH ED.,p.119,1983
1.33E-3 30 H 9HERBH,5TH ED.,p.119,1983
7.86E-03 40 H 9HERBH,5TH ED.,p.119,1983
Water solubility (ppm): -temp- -source- -reference-
155 25 M 9DUPON
Organic solubility (ppm):
2.1E+5* METHYLCYCLOHEXANOL 25 H 9ACHB2,2ND ED.,1987
2.1E+5* CHLOROFORM 25 H 9ACHB2,2ND ED.,1987
1.9E+5* ACETONE 25 H 9ACHB2,2ND ED.,1987
4.5E+4* ETHANOL 25 H 9ACHB2,2ND ED.,1987
1.5E+4* BENZENE 25 H 9ACHB2,2ND ED.,1987
1.5E+4* HEXANE 25 H 9ACHB2,2ND ED.,1987
Henrys law (Pa m3/mol):
6,6E-6 25 M 9DUPON,1999
Octanol/water partitioning (log Kow): -pH-
2.1* 25 7 M 9DUPON
2.02 E ESTHAG, 22(3):273,1988
2.24 E JEVQAA, 10(3):384,1981
Acid dissociation (pKa):
0.63 E PSSCBG, 17(4):376,1986
1.1 E ADCSAJ, 111:73,1972
0.87*
Soil sorption:
soiltype temp. Kd Koc %om pH source reference
218*
SAND(CA) 25 0.52 235 0.38 ND M 9DUPON,1999
SNDY LOAM(CA) 25 1.36 213 1.1 7.3 M 9DUPON,1999
SLTY CLY LM(IA) 25 2.53 218 2.0 5.3 M 9DUPON,1999
SNDY CLY LM(GA) 25 0.64 73 1.5 6.4 M 9DUPON,1999
SILT LOAM(NC) 25 2.3 85 4.7 6.5 M 9DUPON,1999
CLAY LOAM(TX) 25 0.28 40 1.2 8.3 M 9DUPON,1999
SANDY LOAM(CA) 25 0.38 50 1.3 6.6 M 9DUPON,1999
LOAMY SAND(MI) 25 0.28 60 0.8 5.7 M 9DUPON,1999
Field Dissipation halflife(days):
value test area pH source reference
13 SILT LOAM(DE) M 9DUPON,1999
20 SANDY LOAM(CA) MM 9DUPON,1999
6 SILTY CLAY(IL) M 9DUPON,1999
Halflife in soil:
Soiltype aerobic anaerobic source reference
SNDY LOAM(CA) 17 M 9DUPON
Comments:
OCTANOL WATER VALUE 2.1=PH7; SOIL SORPTION KOC=218(73-500)