Dazomet│Network Academic Resources of Pesticide

Dazomet

| 来源-本站收集整理 | 作者-本站 | 2012-05-23

Property		Value	Source/Quality Score/Other Information	Interpretation
Solubility - In water at 20^oC (mg l^-1)		3500	A5	High
Solubility - In organic solvents at 20^oC (mg l^-1)		89700	A5 - Acetone	-
		28500	A5 - Ethyl acetate	-
		21300	A5 - Methanol	-
		8600	A5 - Toluene	-
Melting Point (^oC)		105	A5	-
Boiling Point (^oC)		Decomposes before boiling	A4	-
Degradation point (^oC)		150	A5	-
Flashpoint (^oC)		Not highly flammable	A5	-
Octanol-water partition coefficient at pH 7, 20^oC	P	4.27 X 10⁰⁰	Calculated	-
Octanol-water partition coefficient at pH 7, 20^oC	Log P	0.63	A5	Low
Bulk density (g ml^-1)/Specific gravity		1.37	L3	-
Dissociation constant (pKa) at 25^oC		Not applicable	A5	-
Dissociation constant (pKa) at 25^oC		Note: No dissociation
Vapour pressure at 25^oC (mPa)		1.1	A5	Volatile
Henry's law constant at 25^oC (Pa m³ mol^-1)		5.10 X 10^-05	A5	Non-volatile
Henry's law constant at 20^oC (dimensionless)		1.20 X 10^-08	K3	Non-volatile
GUS leaching potential index		1.34	Calculated	Low leachability
SCI-GROW groundwater index (g l^-1) for a 1 kg ha^-1 or 1 l ha^-1 application rate	Value	9.98 X 10^-03	Calculated	-
	Note	-
Potential for particle bound transport index		-	Calculated	Low
Maximum UV-vis absorption L mol^-1 cm^-1		pH 6.2 solution: 208nm = 7308, 228.5nm = 4209, 246nm = 6209, 260nm = 4631, 283nm = 11378, 300nm = 3682	A5	-
Surface tension (mN m^-1)		64.9	A5 at 20^oC	-

Degradation:

Property		Value	Source/Quality Score/Other Information	Interpretation
Soil degradation (days) (aerobic)	DT50 (typical)	7	H4	Non-persistent
	DT50 (lab at 20^oC)	0.52	A5	Non-persistent
	DT50 (field)	1.2	A5	Non-persistent
	DT90 (lab at 20^oC)	4.4	A5	-
	DT90 (field)	3.8	A5	-
	Note	EU dossier lab studies DT50 range: 0.07-5.4 days, DT90 range 0.8-18.0 days; field studies DT50 0.9-1.6 days, DT90 range 2.6-4.6 days; Other sources: DT50 7 days (DW3)
Aqueous photolysis DT50 (days) at pH 7	Value	0.35	A5	Fast
Aqueous photolysis DT50 (days) at pH 7	Note	DT50: 4 hrs in daylight, 7.3 hours in dark
Aqueous hydrolysis DT50 (days) at 20^oC and pH 7	Value	0.2	A5	Non-persistent
Aqueous hydrolysis DT50 (days) at 20^oC and pH 7	Note	Slightly vaiable with pH: DT50 0.4 days at pH 5, 0.1 days at pH 9 all at 25 degC
Water-Sediment DT50 (days)		0.52	A5	Fast
Water phase only DT50 (days)		0.45	A3	Fast

Soil adsorption and mobility:

Property		Value	Source/Quality Score/Other Information	Interpretation
Linear	K_d	-	DW3	Very mobile
	K_oc	10
	Notes and range	-
Freundlich	K_f	1.13	A5	Moderately mobile
	K_foc	260
	¹/_n	0.838
	Notes and range	EU dossier Kf range 0.808-1.834, kfoc range 129-394 mL/g, 1/n range 0.805-0.889, Soils=4
pH sensitivity		No

Key metabolites:

Metabolite	Formation Medium	Estimated Maximum Occurrence Fraction	91/414 Relevancy
methyl isothiocyanate (Ref: SN-32866)	Soil	0.740	Major fraction, Relevant
formaldehyde	Soil	0.205	Major fraction, Relevant
methylamine	Soil	0.092	Minor fraction, Not relevant
2,4-dimethyl-1,2,4-thiadiazolidine-5-thione	Soil	0.450	Major fraction, Relevant

Other known metabolites:

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