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triasulfuron (Ref: CGA 131036 )
** triazsulfuron ** 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 triasulfuron

Description: A herbicide for annual broad-leaved weed control in cereals and for other weed clearing activities

Example pests controlled: Annual ryegrass; Paradoxa grass; Timothy; Wild radish; Deadnettles; Hedge mustard; Rough poppy; Wild turnip; Bermudagrass; Smooth brome

Example applications: Cereals including wheat, oats, barley; Non-crop areas including rangeland, roadsides, railways, industrial sites, paths, rights-of-way

Efficacy & activity: -

Availability status: Current

Introduction & key dates: circa 1985

EC Regulation 1107/2009 (repealing 91/414):
Status Not Approved
Dossier rapporteur/co-rapporteur France/Denmark
Date inclusion expires Expired
EU Candidate for substitution (CfS) Not applicable
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 C14H16ClN5O5S
Canonical SMILES CC1=NC(=NC(=N1)OC)NC(=O)NS(=O)(=O)C2=CC=CC=C2OCCCl
Isomeric SMILES No data
International Chemical Identifier key (InChIKey) XOPFESVZMSQIKC-UHFFFAOYSA-N
International Chemical Identifier (InChI) InChI=1S/C14H16ClN5O5S/c1-9-16-12(19-14(17-9)24-2)18-13(21)20-26(22,23)11-6-4-3-5-10(11)25-8-7-15/h3-6H,7-8H2,1-2H3,(H2,16,17,18,19,20,21)
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 Sulfonylurea
Minimum active substance purity 940 g/kg
Known relevant impurities EU dossier - None declared
Substance origin Synthetic
Mode of action Selective, absorbed by leaves and roots and translocated. Inhibits plant amino acid synthesis - acetohydroxyacid synthase AHAS
CAS RN 82097-50-5
EC number -
CIPAC number 480
US EPA chemical code 128969
PubChem CID 73282
Molecular mass (g mol-1) 401.8
PIN (Preferred Identification Name) 2-(2-chloroethoxy)-N-[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)carbamoyl]benzene-1-sulfonamide
IUPAC name 1-[2-(2-chloroethoxy)phenylsulfonyl]-3-(4-methoxy-6-methyl-1,3,5-triazin-2-yl)urea
CAS name 2-(2-chloroethoxy)-N-[[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino]carbonyl]benzenesulfonamide
Other status information -
Relevant Environmental Water Quality Standards -
Herbicide Resistance Classification (HRAC) B
Herbicide Resistance Classification (WSSA) 2
Insecticide Resistance Classification (IRAC) Not applicable
Fungicide Resistance Classification (FRAC) Not applicable
Examples of recorded resistance Lolium multiflorum
Lolium rigidum
Physical state White 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
  • Syngenta
  • Titan Ag
  • Logran
Example products using this active
  • Usually supplied as wettable granules for foliar application
UK LERAP status No UK approval for use as a pesticide under EC Regulation 1107/2009
Formulation and application details -


ENVIRONMENTAL FATE

for triasulfuron

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) 815 A5 High
Solubility - In organic solvents at 20oC (mg l-1) 40 A5 - n-Hexane -
300 A5 - Toluene -
14000 A5 - Acetone -
4300 A5 - Ethyl acetate -
Melting point (oC) 188.6 A5 -
Boiling point (oC) Decomposes before boiling A5 -
Degradation point (oC) 178.1 A5 -
Flashpoint (oC) Not expected to self ignite; Not highly flammable A5 -
Octanol-water partition coefficient at pH 7, 20oC P 2.57 X 10-01 Calculated -
Log P -0.59 A5 Low
Bulk density (g ml-1)/Specific gravity 1.47 A5 -
Dissociation constant (pKa) at 25oC 4.64 A5 -
Note: Weak acid
Vapour pressure at 20oC (mPa) 0.0021 A5 Low volatility
Henry's law constant at 25oC (Pa m3 mol-1) 8.00 X 10-05 A5 Non-volatile
GUS leaching potential index Click here for a note on the limitations of the GUS index 5.12 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 4.13 X 10+00 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-1 223.4nm = 26051, 282.8nm = 3415, shoulder between 240-250nm, no absorption after 340nm A5 -
Surface tension (mN m-1) 63.9 A5 -

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) 59.1 A5 Moderately persistent
DT50 (lab at 20oC) 59.1 A5 Moderately persistent
DT50 (field) 38.5 A5 Moderately persistent
DT90 (lab at 20oC) 178.5 A5 -
DT90 (field) 112.2 A5 -
DT50 modelling endpoint - - -
Note EU dossier lab studies DT50 range 20.7-118 days, DT90 range 68.8-243.3 days, field studies DT50 range 16.1-92.4 days, DT90 range 53.5-198 days; Other sources: 60 days (DW4)
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 A5 -
Note Not a significant degradation route, light has little effect
Aqueous hydrolysis DT50 (days) at 20oC and pH 7 Value Stable A5 -
Note pH sensitive: DT50 23 days at pH 5, stable at pH 7 and pH 9, all at 22 degC
Water-sediment DT50 (days) 217 A5 Slow
Water phase only DT50 (days) 217 A5 Stable

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 - DW4 Mobile
Koc 60
Notes and range -
Freundlich Kf 0.49 A5 Very mobile
Kfoc 12.8
1/n 0.850
Notes and range EU dossier 2014 Kf=0.05-2.65 mL/g, Kfoc range 7-25 mL/g; Literature data: Kf range 0.46-6.34 mL/g, Kfoc range 43.5-171 mL/g, 1/n range 0.68-0.88, soils = 3 (R4)
pH sensitivity No

Key metabolites:
Metabolite Formation medium Estimated maximum occurrence fraction 1107/2009 relevancy Click here for further information on 1107/2009 relevancy
2-amino-4-methoxy-6-methyl-1,3,5-triazine (Ref: IN-A4098) This metabolite may cause environmental pollution, click here for further information Soil   0.267   Major fraction, Relevant
O-demethyl triasulfuron (Ref: CGA 195660) This metabolite may cause environmental pollution, click here for further information Soil   0.227   Major fraction, Relevant
N-((N-carbamoylcarbamimidoyl)carbamoyl)-2-(2-chloroethoxy)benzenesulfonamide (Ref: SYN546702) This metabolite may cause environmental pollution, click here for further information Soil   0.169   Major fraction, Relevant

Other known metabolites:
Metabolite name and reference Aliases Formation medium / Rate Estimated maximum occurrence fraction Metabolising enzymes
chlorosulfonamide - Soil (Photolysis); Water - -
hydroxy chlorosulfonamide - Soil (Photolysis) - -


ECOTOXICOLOGY

for triasulfuron

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) 1.3 A5 Whole fish Low potential
CT50 (days) Not available -
Mammals - Acute oral LD50 (mg kg-1) > 5000 A5 Rat Low
Mammals - Short term dietary NOEL (mg kg-1) - A5 Rat -
(ppm diet) > 1000 -
Birds - Acute LD50 (mg kg-1) > 2150 A5 Colinus virginianus Low
Birds - Short term dietary (LC50/LD50) > 5000 mg kg feed-1 A5 Colinus virginianus -
Fish - Acute 96 hour LC50 (mg l-1) > 100 A5 Oncorhynchus mykiss Low
Fish - Chronic 21 day NOEC (mg l-1) 36.6 A5 Oncorhynchus mykiss Low
Aquatic invertebrates - Acute 48 hour EC50 (mg l-1) > 100 A5 Daphnia magna Low
Aquatic invertebrates - Chronic 21 day NOEC (mg l-1) 10 A5 Daphnia magna Moderate
Aquatic crustaceans - Acute 96 hour LC50 (mg l-1) 17.2 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) 0.000068 A5 Lemna gibba High
Non-target plants - - -
- - -
Algae - Acute 72 hour EC50, growth (mg l-1) 0.035 A3 Raphidocelis subcapitata, 12 day Moderate
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) 100 A4 Moderate
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 26.2 Beneficial capacity
Dose: 0.025 kg ha-1
A5 Aphidius rhopalosiphi
-
Other arthropod (2) LR50 g ha-1 - - -
% Effect 3.1 Beneficial effect
Dose: 0.025kg ha-1
A5 Typhlodromus pyri
-
Soil micro-organisms Nitrogen mineralisation: No significant adverse effect
Carbon mineralisation: No significant adverse effect
A5
Dose: 0.25 kg ha-1
-
Mesocosm study data NOEAEC mg l-1 - - -
NOEAEC mg l-1 - - -


HUMAN HEALTH AND PROTECTION

for triasulfuron

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) > 5000 A5 Rat Low
Mammals - Dermal LD50 (mg kg-1 body weight) > 2000 A5 Rat -
Mammals - Inhalation LC50 (mg l-1) > 5.2 A5 Rat -
Other Mammal toxicity endpoints - -
ADI - Acceptable Daily Intake (mg kg-1bw day-1) 0.01 A5 Mouse, 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) 0.3 A4 Dog, 1 year, SF=100 -
Dermal penetration studies (%) 0.03-3.0 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 Possible blood and liver 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 IMDG Transport Code is usually 9
CLP classification 2013 Environment: H400, H410
EC Risk Classification Click here to view information omn the EU risk phrases N - Dangerous for the environment: R50, R53
EC Safety Classification Click here to view information omn the EU safety phrases S60, S61
WHO Classification U - Unlikely to present an acute hazard
US EPA Classification (formulation) III - Caution - Slightly toxic
UN Number Usually 3077
Waste disposal & packaging Click here for a description of UN packaging marks Packaging Group III (minor danger)


TRANSLATIONS

for triasulfuron

Language Name
English triasulfuron
French triasulfuron
German Triasulfuron
Danish triasulfuron
Italian triasulfuron
Spanish triasulfuron
Greek triasulfuron
Slovenian triasulfuron
Polish triasulfuron
Swedish -
Hungarian triaszulfuron
Dutch triasulfuron

Record last updated: Wednesday 30 May 2018
Contact: aeru@herts.ac.uk