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oxadiargyl (Ref: RP 020630 )
** Translations

Environmental Fate - Ecotoxicology - Human Health - A to Z Index - Home

GENERAL INFORMATION Click here for an explantaion of the general chemical status information
for oxadiargyl

Description: A pre-emergence oxadiazolone herbicide for grass and broad-leaved weed control

Example pests controlled: Annual grasses including crabgrass, Echinochloa; Sedges; Broad-leaved weeds including Phyllanthus; Solanaceae weeds

Example applications: Rice; Sugarcane; Sunflower; Transplanted vegetables; Potatoes; Capsiums

Efficacy & activity: -

Availability status: Current

Introduction & key dates: 1996, Introduced South America

EC Regulation 1107/2009 (repealing 91/414):
Status Not approved
Dossier rapporteur/co-rapporteur Italy
Date inclusion expires Expired
EU Candidate for substitution (CfS) -
Listed in EU database Yes

Approved for use () or known to be used () in the following European countries: Click to access a note on the approvals information on this site

AT

BE

BG

CY

CZ

DE

DK

EE

EL

ES

FI

FR

HR

HU

IE

IT

LT

LU

LV

MT

NL

PL

PT

RO

SE

SI

SK

UK

Also used in: Australia

Chemical structure: Click here for further information on the general chemical status information used on this site
Isomerism -
Chemical formula C15H14Cl2N2O3
Canonical SMILES CC(C)(C)C1=NN(C(=O)O1)C2=CC(=C(C=C2Cl)Cl)OCC#C
Isomeric SMILES No data
International Chemical Identifier key (InChIKey) DVOODWOZJVJKQR-UHFFFAOYSA-N
International Chemical Identifier (InChI) InChI=1S/C15H14Cl2N2O3/c1-5-6-21-12-8-11(9(16)7-10(12)17)19-14(20)22-13(18-19)15(2,3)4/h1,7-8H,6H2,2-4H3
Structure diagram/image available? Yes

General status: Click here for further information on the general chemical status information used on this site
Pesticide type Herbicide
Substance group Oxidiazole
Minimum active substance purity 980 g/Kg
Known relevant impurities EU dossier - None declared
Substance origin Synthetic
Mode of action Selective. Inhibition of protoporphyrinogen oxidase (PPO).
CAS RN 39807-15-3
EC number 254-637-6
CIPAC number 604
US EPA chemical code -
PubChem CID 94498
Molecular mass (g mol-1) 341.2
PIN (Preferred Identification Name) -
IUPAC name 5-tert-butyl-3-[2,4-dichloro-5-(prop-2-ynyloxy)phenyl]-1,3,4-oxadiazol-2(3H)-one
CAS name 3-[2,4-dichloro-5-(2-propynyloxy)phenyl]-5-(1,1-dimethylethyl)-1,3,4-oxadiazol-2(3H)-one
Other status information Chemical subject to PIC regulations; PAN listed Highly Hazardous Chemical
Relevant Environmental Water Quality Standards -
Herbicide Resistance Classification (HRAC) E
Herbicide Resistance Classification (WSSA) 14
Insecticide Resistance Classification (IRAC) Not applicable
Fungicide Resistance Classification (FRAC) Not applicable
Examples of recorded resistance -
Physical state White to beige powder
Related substances & organisms -

Formulations:
Property Click here for information on the general product and branding information used on this site Value
Example manufacturers & suppliers of products using this active now or historically
  • Bayer CropScience
  • Lianyungang Liben Agro-Chemical Co. Ltd.
Example products using this active
  • Raft
  • Fenax
  • Topstar
UK LERAP status No UK approval for use as a pesticide under EC Regulation 1107/2009
Formulation and application details Available in a wide range of formulations including emulsifiable concentrates, suspension concentrates, water dispersible granules and wettable powders.


ENVIRONMENTAL FATE

for oxadiargyl

Property Click here for information on the parameters used to describe environmental fate on this site Value Source/Quality Score/Other Information Click here for information on the primary data sources used to populate this database with fate data Interpretation Click here for information on the way in which we interpret environmental fate data
Solubility - In water at 20oC (mg l-1) 0.37 A5 Low
Solubility - In organic solvents at 20oC (mg l-1) 250000 A5 - Acetone -
121600 A5 - Ethyl acetate -
77600 A5 - Toluene -
14700 A5 - Methanol -
Melting point (oC) 131 A5 -
Boiling point (oC) Decomposes before boiling A5 -
Degradation point (oC) - - -
Flashpoint (oC) - - -
Octanol-water partition coefficient at pH 7, 20oC P 8.91 X 1003 Calculated -
Log P 3.95 A5 High
Bulk density (g ml-1)/Specific gravity 1.41 A5 -
Dissociation constant (pKa) at 25oC Not applicable A5 -
Note: No dissociation
Vapour pressure at 20oC (mPa) 0.0025 A5 Low volatility
Henry's law constant at 25oC (Pa m3 mol-1) 9.10 X 10-04 A5 Non-volatile
GUS leaching potential index Click here for a note on the limitations of the GUS index 1.11 Calculated Low leachability
SCI-GROW groundwater index (μg l-1) for a 1 kg ha-1 or 1 l ha-1 application rate Click here for a note on the limitations of the SCI-GROW index Value 2.27 X 10-02 Calculated -
Note -
Potential for particle bound transport index Click here for a note on the limitations of the potential for particle bound transport index - Calculated Medium
Maximum UV-vis absorption L mol-1 cm-1 295nm = 2930 A5 -
Surface tension (mN m-1) - - -

Degradation:
Property Click here for information on the parameters used to describe substance degradation Value Source/Quality Score/Other Information Click here for information on the primary data sources used to populate this database with degradation data Interpretation Click here for information on the way in which we interpret substance degradation data
General biodegradability -
Soil degradation (days) (aerobic) DT50 (typical) 25 A5 Non-persistent
DT50 (lab at 20oC) 35 A5 Moderately persistent
DT50 (field) 19 A5 Non-persistent
DT90 (lab at 20oC) 333 A5 -
DT90 (field) 90 A5 -
DT50 modelling endpoint - - -
Note Lab studies DT50 range 15-72 days, DT90 range 85-363 days, field study DT50 range 9-25 days (EU), DT90 range 42-162 days
Dissipation rate RL50 on plant matrix Value - - -
Note -
Dissipation rate RL50 on and in plant matrix Value - - -
Note -
Aqueous photolysis DT50 (days) at pH 7 Value 1 A5 Moderately fast
Note -
Aqueous hydrolysis DT50 (days) at 20oC and pH 7 Value Stable A5 -
Note Stable pH 4 to pH 7, DT50 7.3 days at pH 9, all at 25 degC
Water-sediment DT50 (days) 63 A5 Moderately fast
Water phase only DT50 (days) 0.1 A5 Fast

Soil adsorption and mobility:
Property Click here for information on the parameters used to describe substance adsorption and mobility Value Source/Quality Score/Other Information Click here for information on the primary data sources used to populate this database with adsorption and mobility data Interpretation Click here for information on the way in which we interpret substance adsorption and mobility
Linear Kd - A5 Slightly mobile
Koc 1915
Notes and range EU dossier Koc range 1138-3093 mL/g
Freundlich Kf - - -
Kfoc -
1/n -
Notes and range -
pH sensitivity No

Key metabolites:
Metabolite Formation medium Estimated maximum occurrence fraction 1107/2009 relevancy Click here for further information on 1107/2009 relevancy
Ref: RP-017272 This metabolite may cause environmental pollution, click here for further information Soil   0.320   Major fraction, Relevancy unknwon
Ref: RP-025496 This metabolite may cause environmental pollution, click here for further information Soil   0.100   Major, Relevancy unknown

Other known metabolites:
Metabolite name and reference Aliases Formation medium / Rate Estimated maximum occurrence fraction Metabolising enzymes
(Ref: RP-040522) - Water (Hydrolsyis@ pH9) - -


ECOTOXICOLOGY

for oxadiargyl

Property Click here for information on the parameters used to describe substance ecotoxicology Value Source/Quality Score/Other Information Click here for information on the primary data sources used to populate this database with ecotoxicology data Interpretation Click here for information on the way in which we interpret substance ecotoxicology
Bio-concentration factor BCF (l kg-1) 658 A5 Threshold for concern
CT50 (days) 1.5 -
Mammals - Acute oral LD50 (mg kg-1) > 802 A5 Rat Moderate
Mammals - Short term dietary NOEL (mg kg-1) > 19.7 A5 Rat High
(ppm diet) > 150 -
Birds - Acute LD50 (mg kg-1) > 2000 A5 Colinus virginianus Low
Birds - Short term dietary (LC50/LD50) > 5200 mg kg feed-1 A5 Anas platyrhynchos -
Fish - Acute 96 hour LC50 (mg l-1) > 0.201 A5 Oncorhynchus mykiss Moderate
Fish - Chronic 21 day NOEC (mg l-1) 0.024 A4 Pimephales promelas, 35 day Moderate
Aquatic invertebrates - Acute 48 hour EC50 (mg l-1) > 0.352 A5 Daphnia magna Moderate
Aquatic invertebrates - Chronic 21 day NOEC (mg l-1) 0.027 A5 Daphnia magna Moderate
Aquatic crustaceans - Acute 96 hour LC50 (mg l-1) - - -
Sediment dwelling organisms - Acute 96 hour LC50 (mg l-1) - - -
Sediment dwelling organisms - Chronic 28 day NOEC, static, water (mg l-1) 0.050 A5 Chironomus riparius Moderate
Sediment dwelling organisms - Chronic 28 day NOEC, sediment (mg kg-1) - - -
Aquatic plants - Acute 7 day EC50, biomass (mg l-1) 0.0015 A5 Lemna minor High
Non-target plants - - -
- - -
Algae - Acute 72 hour EC50, growth (mg l-1) 0.001 A5 Scenedesmus subspicatus High
Algae - Chronic 96 hour NOEC, growth (mg l-1) - - -
Honeybees Contact acute 48 hour LD50 (μg bee-1) - - -
Oral acute 48 hour LD50 (μg bee-1) > 200 A5 Low
Unknown mode acute 48 hour LD50 (μg bee-1) - - -
Earthworms - Acute 14 day LC50 (mg kg-1) > 1000 A5 Low
Earthworms - Chronic 14 day NOEC, reproduction (mg kg-1) - - -
Other soil macro-organisms - e.g. Collembola LR50 / EC50 / NOEC / % Effect - - -
Other arthropod (1) LR50 g ha-1 - - -
% Effect 0 Mortality
Dose: 0.4 kg ha-1
A5 Aphidius rhopalosiphi
-
Other arthropod (2) LR50 g ha-1 - - -
% Effect 37 Mortality
Dose: 0.4 kg ha-1
A5 Typhlodromus pyri
-
Soil micro-organisms Nitrogen mineralisation: >-15% Transient effect
Carbon mineralisation: No significant adverse effect
A5
Dose: 5 x field rate, 60 days
-
Mesocosm study data NOEAEC mg l-1 - - -
NOEAEC mg l-1 - - -


HUMAN HEALTH AND PROTECTION

for oxadiargyl

General:
Property Click here for information on the parameters used to describe human health and protection issues Value Source/Quality Score/Other Information Click here for information on the primary data sources used to populate this database with human health and protection data Interpretation Click here for information on the way in which we interpret human health and protection data
Threshold of Toxicological Concern (Cramer Class) Click here for a note on the limitations of the Cramer class High (class III) - -
Mammals - Acute oral LD50 (mg kg-1) > 802 A5 Rat Moderate
Mammals - Dermal LD50 (mg kg-1 body weight) > 2000 A5 Rat -
Mammals - Inhalation LC50 (mg l-1) 5.16 A5 Rat (nose only) -
Other Mammal toxicity endpoints - -
ADI - Acceptable Daily Intake (mg kg-1bw day-1) 0.008 A5 Rat, SF=100 -
ARfD - Acute Reference Dose (mg kg-1bw day-1) None allocated A5 -
AAOEL - Acute Acceptable Operator Exposure Level (mg kg-1 bw day-1) - - -
AOEL - Acceptable Operator Exposure Level - Systemic (mg kg-1bw day-1) 0.006 A5 Rat, 90 day, SF=100 -
Dermal penetration studies (%) 0.5-10.8 A5 concentration dependent -
Dangerous Substances Directive 76/464 - - -
Exposure Limits - - -
Exposure Routes Public No unacceptable risks to bystanders identified
Occupational No unacceptable risks to operators or other workers identified
European MRLs Click here for the EU MRL pesticide database
Drinking Water Standards - - -
Drinking Water MAC (μg l-1) - - -

Health issues:
Carcinogen Mutagen Endocrine disrupter Reproduction / development effects Cholinesterase inhibitor Neurotoxicant

Respiratory tract irritant Skin irritant Skin sensitiser Eye irritant Phototoxicant

-

-

General human health issues Toxic if swallowed

: Yes, known to cause a problem
: No, known not to cause a problem
: Possibly, status not identified
- : No data found

Handling issues:
Property Click here for information on the parameters used to describe substance handling issues Value Source/Quality Score/Other Information Click here for information on the primary data sources used to populate this database with data on handling issues Interpretation Click here for information on the way in which we interpret data on handling issues
General Click here for a description of the International Maritime Dangerous Goods (IMDG) codes Not explosive or oxidising
IMDG Transport Code is usually 9
CLP classification 2013 Health: H361d, H373
Environment: H400, H410
EC Risk Classification Click here to view information omn the EU risk phrases Reproduction risk category 3: R63
Xn - Harmful: R48/22
N - Dangerous for the environment: R50, R53
EC Safety Classification Click here to view information omn the EU safety phrases S2, S36/37, S46, S60, S61
WHO Classification NL - Not listed
US EPA Classification (formulation) No consensus across products or no products available - -
UN Number Usually 3077
Waste disposal & packaging Click here for a description of UN packaging marks Packaging Group III (minor danger)


TRANSLATIONS

for oxadiargyl

Language Name
English oxadiargyl
French oxadiargyl
German Oxadiargyl
Danish oxadiargyl
Italian oxadiargyl
Spanish oxadiargil
Greek oxadiargyl
Slovenian oksadiargil
Polish oksadiargil
Swedish -
Hungarian -
Dutch oxadiargyl

Record last updated: Thursday 24 May 2018
Contact: aeru@herts.ac.uk