ARS PESTICIDE PROPERTIES last update May 1995


name:MANCOZEB                                  CASRN: 8018-01-7

molecular formula: (C4H6MnN2S4)X(Zn)Y
molecular weight : 
physical state   : S
(L=liquid; G=gas; S=solid)
reference:

_________________________________________________________________________
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):
192    -    194                                   H       9PME10    

Decomposition point(deg C):
       -    150                                   M       6ROHMH, AD
       -    172                                   M       6ROHMH, EEC
Heat of vaporization(deg C):


--RATE CONSTANTS--

Hydrolysis (per day):
0.46                                    5         M       6ROHMH, EEC
0.30                                    7         M       6ROHMH, EEC
1.04                                    9         M       6ROHMH, EEC


Photolysis (per day):
STABLE               SOIL        25               M       9DUPON
>5.5*                WATER       25               M       9DUPON
STABLE               WATER                        M       6ROHMH, EEC

Vapor pressure (mPa):
1E-5                             20               H       9ACHB2 1983 ED.
1.76E-5*                         25               M       9DUPON
1.3E-2                           25               M       6ROHMH, AD

Water solubility (ppm):        -temp-         -source-    -reference-
6.2* (pH7.5)                     25               M       9DUPON
6                                25               M       9DUPON

Organic solubility (ppm):
ESSENTIALLY INSOLUBLE                             M       6ROHMH, AD


Henrys law (Pa m3/mol):
<5.9E-4                                           M       6ROHMH, EEC

Octanol/water partitioning (log Kow):
1.33                                              M       6ROHMH, EEC

Acid dissociation (pKa):


Soil sorption:
soiltype        temp.   Kd     Koc      %om   pH          reference
                               >2000                      9DUPON
                               10000                      8GLEAM
                               6000*
SILT LOAM                      363-892            M       6ROHMH, AD
SAND                           2334               M       6ROHMH, AD
SAND                           20726              M       6ROHMH, AD
SANDY LOAM                     618                M       6ROHMH, EEC
CLAY LOAM                      675                M       6ROHMH, EEC


Field Dissipation halflife(days):
value           test area        pH        source     reference
35                                           C        8GLEAM
36-139                                       R        8FULLE
7                                            M        9DUPON
43(7-139)*
6                                            M        6ROHMH, AD
C.A.5                                        M        6ROHMH, AD
STABLE          LMY SOILS                    M        6ROHMH, EEC

Halflife in soil:
Soiltype           aerobic      anaerobic   source    reference
SILT LM(PA)         <2*                      M        9DUPON


Comments:
WATER SOLUBILITY VALUE 6.2=PH7.5; AEROBIC <2=PH6.1