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EC number: 206-354-4
CAS number: 330-54-1
Results of the analysis show that Diuron
remained stable for the test duration and that no adsorption to the
surface of the test vessels occured
kinetics showed that equilibrium conditions were achieved after 48 h.
indicate that Diuron has a low potential to adsorb to soil considering
the log Koc is < 3 (determined value 2.5)
The desorption coefficients were higher
than the adsorption coefficents.
The Koc Values are summarised
in the Tables below.
regression analysis of the adsorption data of Diuron (Freundlich
Correlation coefficient R2
Intercept of y-axis (log KFads)
Adsorption coefficient KFads
Content of org. carbon Corg[%]
Normalized adsorption coeff. Kocads
Mean Koc = 395 (log Koc 2.5)
Linear regression analysis of the adsorption data of Diuron (Freundlich
Intercept of y-axis (log KFdes)
Desorption coefficient KFdes
Normalized desorption coeff. Kocdes
Mean Koc = 593
An absorption/desorption test is available for this
substance in accordance with the prevailing OECD guidelines (OECD 106),
with GLP. The adsorption/desorption characteristics of 5 soils were
investigated. The adsorption Koc values ranged from 293 to
504 (Mean Koc = 395 corresponding to a log Koc = 2.5).
The desorption Koc values ranged from 370 to 934 (Mean Koc
= 593). The log Koc of < 3 indicates that Diuron has a low potential
to adsorb to soils as per the TGD.
The low log Koc value of diuron is 2.5.
absorption/desorption test is available for this substance in accordance
with the prevailing OECD guidelines (OECD 106), with GLP. The
adsorption/desorption characteristics of 5 soils were investigated. The
adsorption Koc values ranged from 293 to 504 (Mean Koc =
395, corresponding to log Koc of 2.5). The desorption Koc
values ranged from 370 to 934 (Mean Koc = 593) (Derz, 2009).
The log Koc value of 2.5 indicates that Diuron has a minor
tendecy to leach.
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