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sulfentrazone (Ref: FMC 97285)
** F6285 ** Translations

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

SUMMARY

Sulfentrazone is a herbicide without EU regulatory approval for use. It has a high aqueous solubility, is volatile and, based on its chemical properties, is mobile with a high potential to leach to groundwater. It can be very persistent in soil and aquatic systems. It is not susceptible to hydrolysis but may degrade via photolysis in aquatic systems. It has a relatively low mammalian toxicity but may bioaccumulate. Whilst its toxicity to birds is relatively low there is greater risk to aquatic species and honey bees.

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

Description: A herbicide for control of broad-leaved weed and some grasses

Example pests controlled: Carpetweed; Crabgrass; Daisy; Dock; Lambsquarter; Morning glory; Pigweed; Thistles; Waterhemp

Example applications: Soybeans; Chickpeas; Tobacco; Sugarcane; Non-agricultrual areas including highways, roads, fence rows, storage areas, industrial sites

Efficacy & activity: -

Availability status: Current

Introduction & key dates: 1991

EC Regulation 1107/2009 (repealing 91/414):
Status Not approved
Dossier rapporteur/co-rapporteur Not applicable
Date inclusion expires Not applicable
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: USA

Chemical structure: Click here for further information on the general chemical status information used on this site
Isomerism -
Chemical formula C11H10Cl2F2N4O3S
Canonical SMILES CC1=NN(C(=O)N1C(F)F)C2=CC(=C(C=C2Cl)Cl)NS(=O)(=O)C
Isomeric SMILES No data
International Chemical Identifier key (InChIKey) OORLZFUTLGXMEF-UHFFFAOYSA-N
International Chemical Identifier (InChI) InChI=1S/C11H10Cl2F2N4O3S/c1-5-16-19(11(20)18(5)10(14)15)9-4-8(17-23(2,21)22)6(12)3-7(9)13/h3-4,10,17H,1-2H3
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 Aryl triazolinone
Minimum active substance purity >92.55%
Known relevant impurities -
Substance origin Synthetic
Mode of action Absorbed by roots and foliage and translocated. Cell membrane disruption - PPO inhibitor.
CAS RN 122836-35-5
EC number -
CIPAC number None allocated
US EPA chemical code 129081
PubChem CID 86369
Molecular mass (g mol-1) 387.19
PIN (Preferred Identification Name) N-{2,4-dichloro-5-[4-(difluoromethyl)-3-methyl-5-oxo-4,5-dihydro-1H-1,2,4-triazol-1-yl]phenyl}methanesulfonamide
IUPAC name 2',4'-dichloro-5'-(4-difluoromethyl-4,5-dihydro-3-methyl-5-oxo-1H-1,2,4-triazol-1-yl)methanesulfonanilide
CAS name N-[2,4-dichloro-5-[4-(difluoromethyl)-4,5-dihydro-3-methyl-5-oxo-1H-1,2,4-triazol-1-yl]phenyl]methanesulfonamide
Other status information Possible groundwater contaminant
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 Light tan coloured solid forumated as an off-white liquid with faint odour
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
  • DuPont
  • FMC Corps
Example products using this active
  • Authority 480
  • Sulfentrazone 4F Row
UK LERAP status No UK approval for use as a pesticide under EC Regulation 1107/2009
Formulation and application details Available in a variety of formulations including flowable liquid end-use products and water dispersible granules.


ENVIRONMENTAL FATE

for sulfentrazone

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) 780 F4 High
Solubility - In organic solvents at 20oC (mg l-1) 640000 P4 - Acetone -
186000 P4 - Acetonitrile -
66600 P4 - Toluene -
110 P4 - Hexane -
Melting point (oC) 122 F4 -
Boiling point (oC) - - -
Degradation point (oC) - - -
Flashpoint (oC) - - -
Octanol-water partition coefficient at pH 7, 20oC P 9.79 X 1000 Calculated -
Log P 0.991 F4 Low
Bulk density (g ml-1)/Specific gravity 0.53 F4 -
Dissociation constant (pKa) at 25oC 6.56 F4 -
Note: Weak acid
Vapour pressure at 20oC (mPa) 1.30 X 10-04 L3 Low volatility
Henry's law constant at 25oC (Pa m3 mol-1) - - -
GUS leaching potential index Click here for a note on the limitations of the GUS index 6.16 Calculated High 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 2.41 X 10+01 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 Max @ 110nm P4 -
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) 541 F4 Very persistent
DT50 (lab at 20oC) 400 F3 Very persistent
DT50 (field) - - -
DT90 (lab at 20oC) - - -
DT90 (field) - - -
DT50 modelling endpoint - - -
Note Other sources: DT50 circa 18 months (L3); Other literature 121-302 days (Q3)
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 Stable F4 -
Note Unstable in UV light
Aqueous hydrolysis DT50 (days) at 20oC and pH 7 Value Stable L3 -
Note Stable under normal environmental conditions
Water-sediment DT50 (days) - - -
Water phase only DT50 (days) - - -

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 - F3 Mobile
Koc 43
Notes and range Other sources: 104 mL/g (US3, DW3)
Freundlich Kf - - -
Kfoc -
1/n -
Notes and range -
pH sensitivity -

Key metabolites:
Metabolite Formation medium Estimated maximum occurrence fraction 1107/2009 relevancy Click here for further information on 1107/2009 relevancy
3-hydroxymethyl sulfentrazone (N-(2,4-dichloro-5-(4-(difluoromethyl)-yl)pheny)methanesulfonamide Soil   -   -


ECOTOXICOLOGY

for sulfentrazone

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) Low risk F4 Based on LogP < 3 Low potential
CT50 (days) - -
Mammals - Acute oral LD50 (mg kg-1) > 2855 F4 Rat Low
Mammals - Short term dietary NOEL (mg kg-1) 10 L3 Rat High
(ppm diet) - -
Birds - Acute LD50 (mg kg-1) > 2250 F4 Anas platyrhynchos Low
Birds - Short term dietary (LC50/LD50) - - -
Fish - Acute 96 hour LC50 (mg l-1) 93.8 F4 Lepomis macrochirus Moderate
Fish - Chronic 21 day NOEC (mg l-1) - - -
Aquatic invertebrates - Acute 48 hour EC50 (mg l-1) > 60.4 F4 Daphnia magna Moderate
Aquatic invertebrates - Chronic 21 day NOEC (mg l-1) - - -
Aquatic crustaceans - Acute 96 hour LC50 (mg l-1) 0.800 F3 Americamysis bahia Moderate
Sediment dwelling organisms - Acute 96 hour LC50 (mg l-1) - - -
Sediment dwelling organisms - Chronic 28 day NOEC, static, water (mg l-1) - - -
Sediment dwelling organisms - Chronic 28 day NOEC, sediment (mg kg-1) - - -
Aquatic plants - Acute 7 day EC50, biomass (mg l-1) 0.29 F4 Lemna gibba Moderate
Non-target plants - - -
- - -
Algae - Acute 72 hour EC50, growth (mg l-1) 32.8 F4 Anabaena flos-aqua Low
Algae - Chronic 96 hour NOEC, growth (mg l-1) - - -
Honeybees Contact acute 48 hour LD50 (μg bee-1) > 25.1 F4 Moderate
Oral acute 48 hour LD50 (μg bee-1) - - -
Unknown mode acute 48 hour LD50 (μg bee-1) - - -
Earthworms - Acute 14 day LC50 (mg kg-1) - - -
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 - - -
Other arthropod (2) LR50 g ha-1 - - -
% Effect - - -
Soil micro-organisms - - -
Mesocosm study data NOEAEC mg l-1 - - -
NOEAEC mg l-1 - - -


HUMAN HEALTH AND PROTECTION

for sulfentrazone

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) > 2855 F4 Rat Low
Mammals - Dermal LD50 (mg kg-1 body weight) > 2000 F4 Rat -
Mammals - Inhalation LC50 (mg l-1) > 4.13 F4 Rat -
Other Mammal toxicity endpoints - -
ADI - Acceptable Daily Intake (mg kg-1bw day-1) - - -
ARfD - Acute Reference Dose (mg kg-1bw day-1) - - -
AAOEL - Acute Acceptable Operator Exposure Level (mg kg-1 bw day-1) - - -
AOEL - Acceptable Operator Exposure Level - Systemic (mg kg-1bw day-1) - - -
Dermal penetration studies (%) - - -
Dangerous Substances Directive 76/464 List II - -
Exposure Limits - - -
Exposure Routes Public -
Occupational -
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 Moderately toxic through the oral route, less so via dermal exposure
Possible liver and kideny toxicant

: 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 Thermal decomposition and burning may form toxic by-products
Slightly combustible
CLP classification 2013 None allocated at this time
EC Risk Classification Click here to view information omn the EU risk phrases Not classified: Obsolete
EC Safety Classification Click here to view information omn the EU safety phrases Not classified: Obsolete
WHO Classification NL - Not listed
US EPA Classification (formulation) III - Caution - Slightly toxic
UN Number -
Waste disposal & packaging Click here for a description of UN packaging marks -


TRANSLATIONS

for sulfentrazone

Language Name
English sulfentrazone
French sulfentrazone
German Sulfentrazon
Danish sulfentrazon
Italian sulfentrazone
Spanish sulfentrazona
Greek -
Slovenian sulfentrazon
Polish sulfentrazon
Swedish -
Hungarian -
Dutch -

Record last updated: Friday 25 May 2018
Contact: aeru@herts.ac.uk