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tritosulfuron
** 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 tritosulfuron

Description: A herbicide used to control a wide range of broad-leaved weeds in cereals and other crops

Example pests controlled: Wild bishop; Milk thistle; Cocklebur; Nightshade; Annual dicots

Example applications: Cereals including wheat, barley, oat; Maize

Efficacy & activity: Efficacy deminstrated via field trials and extensive use

Availability status: Current

Introduction & key dates: 2002

EC Regulation 1107/2009 (repealing 91/414):
Status Approved
Dossier rapporteur/co-rapporteur Slovenia/Austria
Date inclusion expires 30/11/2019
EU Candidate for substitution (CfS) No
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

Chemical structure: Click here for further information on the general chemical status information used on this site
Isomerism -
Chemical formula C13H9F6N5O4S
Canonical SMILES COC1=NC(=NC(=N1)NC(=O)NS(=O)(=O)C2=CC=CC=C2C(F)(F)F)C(F)(F)F
Isomeric SMILES No data
International Chemical Identifier key (InChIKey) KVEQCVKVIFQSGC-UHFFFAOYSA-N
International Chemical Identifier (InChI) InChI=1S/C13H9F6N5O4S/c1-28-11-21-8(13(17,18)19)20-9(23-11)22-10(25)24-29(26,27)7-5-3-2-4-6(7)12(14,15)16/h2-5H,1H3,(H2,20,21,22,23,24,25)/f/h22,24H
2D 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 960 g/Kg
Known relevant impurities EU dossier: AMTT <0.2 g/Kg
Substance origin Synthetic
Mode of action Inhibits amino acid sysnthesis. Inhibits plant amino acid synthesis - acetohydroxyacid synthase AHAS
CAS RN 142469-14-5
EC number Not assigned
CIPAC number 735
US EPA chemical code -
PubChem CID 11657899
Molecular mass (g mol-1) 445.30
Chemical name N-((4-methoxy-6-(trifluoromethyl)-1,3,5-triazin-2-yl)carbamoyl)-2-(trifluoromethyl)benzene-1-sulfonamide
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 -
Physical state White crystalline solid
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
  • BASF
Example products using this active
  • Arrat
UK LERAP status No UK approval for use as a pesticide under EC Regulation 1107/2009
Formulation and application details -


ENVIRONMENTAL FATE

for tritosulfuron

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) 78.3 A4 - @ pH 10.2 Moderate
Solubility - In organic solvents at 20oC (mg l-1) 10000 A5 - Toluene -
25000 A5 - Dichloromethane -
23000 A5 - Methanol -
85000 A5 - Ethyl acetate -
Melting point (oC) 166.5 A5 -
Boiling point (oC) Decomposes before boiling A5 -
Degradation point (oC) 200 A5 -
Flashpoint (oC) Not expected to self ignite; Not highly flammable A5 -
Octanol-water partition coefficient at pH 7, 20oC P 4.17 X 1000 Calculated -
Log P 0.62 A5 Low
Bulk density (g ml-1)/Specific gravity 1.678 A5 -
Dissociation constant (pKa) at 25oC 4.69 A5 -
Note:
Vapour pressure at 20oC (mPa) 9.3 X 10-05 A5 Low volatility
Henry's law constant at 25oC (Pa m3 mol-1) 7.8 X 10-10 A5 Non-volatile
GUS leaching potential index Click here for a note on the limitations of the GUS index 4.27 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 9.56 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 Low
Maximum UV-vis absorption L mol-1 cm-1 pH 0.5: 202nm = 24440; 212nm = 21412; 226nm = 25172nm; 254nm = 7037; 303nm = 212
pH 6.7: 202nm = 18331; 215nm = 18515; 237nm = 21494; 260nm = 13021; 300nm = 144
pH 13.3: 219nm = 18151; 235nm = 15825; 260nm = 11908; 300nm = 1890
A5 -
Surface tension (mN m-1) 64.6 A5 20 oC, 1% aqueous solution -

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 Not readily biodegradable
Soil degradation (days) (aerobic) DT50 (typical) 25.1 A5 Non-persistent
DT50 (lab at 20oC) 25.1 A5 Non-persistent
DT50 (field) 8.2 A5 Non-persistent
DT90 (lab at 20oC) 153 A5 -
DT90 (field) 47.5 A5 -
DT50 modelling endpoint - - -
Note EU 2018 dossier Lab studies DT50 (normalised) range 10.3-199.4 days, DT90 (actual) range 48.4-584.4 days, Soils=7, Field studies DT50 (normalised) range 3.1-36.5 days, DT90 (actual) range 6.2-174.2 days, Soils=15
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 Stable at all environmentally relevant pHs
Aqueous hydrolysis DT50 (days) at 20oC and pH 7 Value 62 A5 Moderately persistent
Note pH sensitive: pH4: DT50 56 days, pH9: DT50 20 days
Water-sediment DT50 (days) 56.5 A5 Moderately fast
Water phase only DT50 (days) 49.5 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 - - -
Koc -
Notes and range -
Freundlich Kf 0.1 A5 Very mobile
Kfoc 8.9
1/n 0.94
Notes and range EU 2018 dossier Kf range 0.05-0.204 mL/g, Kfoc range 3.94-15.4 mL/g, 1/n range 0.86-0.99, Soils=5
pH sensitivity No

Key metabolites:
Metabolite Formation medium Estimated maximum occurrence fraction 1107/2009 relevancy Click here for further information on 1107/2009 relevancy
1-(carbamoylamidino)-3-(2-trifluoromethyl-benzenesulfonyl) urea (Ref: BH 635-4) This metabolite may cause environmental pollution, click here for further information Soil   0.564   Major fraction; Relevant
2-trifluoromethyl-benzenesulfonamide (Ref: BH 635-2) This metabolite may cause environmental pollution, click here for further information Soil   0.231   Major fraction; Relevant
1-amidino-3-(2-trifluoromethyl-benzenesulfonyl) urea (Ref: BH 635-3) This metabolite may cause environmental pollution, click here for further information Soil   0.148   Major fraction; Relevant
2-amino-4-methoxy-6-(trifluoromethyl)-1,3,5-triazine (Ref: BH 635-5) Soil   0.063   Minor fraction; Relevant

Other known metabolites:
Metabolite name and reference Aliases Formation medium / Rate Estimated maximum occurrence fraction Metabolising enzymes
3-hydoxy-6- trifluoromethylbenzenesulfonamide 635M06 Plant - -
5-(hexopyranosyloxy)-2-(trifluoromethyl)benzene-sulfonamide 635M07 Plant - -
N-(methoxycarbonyl)-2-trifluoromethyl-benzenesulfonamide 635M08 Rat - -
N-[4-methoxy-6-(trifluoromethyl)-1,3,5-triazin-2-yl]urea 635M09 Animal - -
amino{[amino(imino)methyl]amino}oxomethane 635M010 Plant - -
2-amino-4-hydroxy-6-trifluoromethyl- 635M11 Rat; Water - -
3-{[({[[(aminocarbonyl)amino]-(imino)methyl]amino}carbonyl)-amino]sulfonyl}-4-(trifluoromethyl)-phenyl hexopyranoside 635M12 Plant - -
3-{[({[4-methoxy-6-(trifluoro-methyl)-1,3,5-triazin-2-yl]amino}-carbonyl)amino]sulfonyl}-4-(trifluoromethyl)phenylhexopyranoside 635M13 Plant - -
3-{[({[4-methoxy-6-(trifluoro-methyl)-1,3,5-triazin-2-yl]amino}-carbonyl)amino]sulfonyl}-4-(trifluoromethyl)phenylhexopyranoside 635M15 Rat - -
1-{[({[[(aminocarbonyl)amino]-(imino)methyl]amino}carbonyl)-amino]sulfonyl}-4-hydroxy-2-(trifluoromethyl) benzene 635M16 Rat - -
1-[(4-methoxy-6-trifluoromethyl)-1,3,5-triazin-2-yl]-3-(5-hydroxy-2-trifluoromethyl-benzenesulfonyl) urea 635M17 Rat; Plant; water - -
1-{[(aminocarbonyl)amino]-sulfonyl}-2-(trifluoromethyl) benzene 635M18 Rat; Plant - -
2-hydroxy-4-(trifluoromethyl)-6-{[({[2(trifluoromethyl)phenyl]-sulfonyl}amino)carbonyl]amino}-1,3,5-triazine 635M19 Rat; Soil; Water - -
1-[(4-amino-6-trifluoromethyl)-1,3,5-triazin-2-yl]-3-(2-trifluoro-methylbenzenesulfonyl) 635M21 Rat - -
2-(trifluoromethyl)benzene sulfonic acid 635M23 Rat; Plant - -
- 635M24 Rat - -
- 635M25 Rat - -
[3-{[({[[(aminocarbonyl)amino](imino)methyl]amino}-carbonyl)amino]sulfonyl}-4-(trifluoromethyl)phenyl] cysteine 635M28 Rat - -
[3-{[({[4-methoxy-6-(trifluoromethyl)-1,3,5-triazin-2-yl]amino}carbonyl)amino]sulfonyl}-4-(trifluoromethyl)phenyl] cysteine 635M29 Rat - -
- 635M30 Rat - -
2-methoxy-4-{[({[4-methoxy-6-(trifluoromethyl)-1,3,5-triazin-2-yl]amino}carbonyl)amino]sulfonyl}-5-(trifluoromethyl)phenyl hydrogen sulfate 635M31 Rat - -
4-{[({[4-methoxy-6-(trifluoromethyl)-1,3,5-triazin-2-yl]amino}carbonyl)amino]sulfonyl}-3-(trifluoromethyl)phenyl hydrogen sulfate 635M32 Rat - -
- 635M34 Rat - -


ECOTOXICOLOGY

for tritosulfuron

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 A5 Based on LogP < 3 Low potential
CT50 (days) - -
Mammals - Acute oral LD50 (mg kg-1) 3870 A5 Rat Low
Mammals - Short term dietary NOEL (mg kg-1) - - -
(ppm diet) - -
Birds - Acute LD50 (mg kg-1) > 2000 A5 Anas platyrhynchos Low
Birds - Short term dietary (LC50/LD50) > 5000 mg kg diet-1 A5 Anas platyrhynchos -
Fish - Acute 96 hour LC50 (mg l-1) > 100 A5 Oncorhynchus mykiss Low
Fish - Chronic 21 day NOEC (mg l-1) 21.5 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) 100 A5 Daphnia magna Low
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) - - -
Sediment dwelling organisms - Chronic 28 day NOEC, sediment (mg kg-1) - - -
Aquatic plants - Acute 7 day EC50, biomass (mg l-1) 0.026 A5 Lemna gibba Moderate
Non-target plants 5.75 A5 Tomato
Vegetative vigour, ER50
as g/ha
-
12.4 A5 Tomato
Seedling emergence, ER50
as g/ha
-
Algae - Acute 72 hour EC50, growth (mg l-1) 0.23 A5 Pseudokirchneriella subcapitata Moderate
Algae - Chronic 96 hour NOEC, growth (mg l-1) - - -
Honeybees (Apis spp.) Contact acute LD50 (worst case from 24 , 48 and 72 hour values - μg bee-1) > 200 A5 Apis mellifera Low
Oral acute LD50 (worst case from 24 , 48 and 72 hour values - μg bee-1) 200 A5 Apis mellifera Low
Unknown mode acute LD50 (worst case from 24 , 48 and 72 hour values - μg bee-1) - - -
Bumblebees (Bombus spp.) Contact acute LD50 (worst case from 24 , 48 and 72 hour values - μg bee-1) - - -
-
Oral acute LD50 (worst case from 24 , 48 and 72 hour values - μg bee-1) - - -
-
Mason bees (Osmia spp.) Contact acute LD50 (worst case from 24 , 48 and 72 hour values - μg bee-1) - - -
Oral acute LD50 (worst case from 24 , 48 and 72 hour values - μg bee-1) - - -
Other pollinators (1) Acute LD50 (worst case from 24 , 48 and 72 hour values - μg insect-1) - - -
Mode of exposure -
Other pollinators (2) Acute LD50 (worst case from 24 , 48 and 72 hour values - μg insect-1) - - -
Mode of exposure -
Earthworms - Acute 14 day LC50 (mg kg-1) > 1000 A5 Eisenia foetida Low
Earthworms - Chronic 14 day NOEC, reproduction (mg kg-1) 7.5 A5 Eisenia foetida Moderate
Other soil macro-organisms - e.g. Collembola LR50 / EC50 / NOEC / % Effect - - -
Other arthropod (1) LR50 g ha-1 28.6 Mortality
A5 Typhlodromus pyri
-
% Effect - - -
Other arthropod (2) LR50 g ha-1 - - -
% Effect 10 Mortality
A5 Aphidius rhopalosiphi
-
Soil micro-organisms Nitrogen mineralisation: No significant adverse effect
Carbon mineralisation: No significant adverse effect
A5
Dose up to 0.35 kg BAS 635 00 H + 6.25 L BAS 152 00 S
-
Mesocosm study data NOEAEC mg l-1 - - -
NOEAEC mg l-1 - - -


HUMAN HEALTH AND PROTECTION

for tritosulfuron

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) 3870 A5 Rat Low
Mammals - Dermal LD50 (mg kg-1 body weight) > 2000 A5 Rat -
Mammals - Inhalation LC50 (mg l-1) > 5.4 A5 Rat, 4 hr (dust, aerosol) -
Other Mammal toxicity endpoints - -
ADI - Acceptable Daily Intake (mg kg-1bw day-1) 0.06 A5 -
ARfD - Acute Reference Dose (mg kg-1bw day-1) None allocated A4 -
AAOEL - Acute Acceptable Operator Exposure Level (mg kg-1 bw day-1) None allocated A5 -
AOEL - Acceptable Operator Exposure Level - Systemic (mg kg-1bw day-1) 0.15 A5 Rat, SF=100 -
Dermal penetration studies (%) - - -
Dangerous Substances Directive 76/464 List II - -
Exposure Routes Public Risks acceptable for intended uses
Occupational Risks acceptable for intended uses
European MRLs Click here for the EU MRL pesticide database
Drinking Water Standards - - -
Drinking Water MAC (μg l-1) - - -

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

A0; B0; C0; D0; E3

Respiratory tract irritant Skin irritant Skin sensitiser Eye irritant Phototoxicant

General human health issues Possible liver and kidney toxicant
Skin sensitiser
Key: Genotoxicity
A: Chromosome aberration (EFSA database)
B: DNA damage/repair (EFSA database)
C: Gene mutation (EFSA database)
D: Genome mutation (EFSA database)
E: Unspecified genotoxicity type (miscellaneous data source)
0: No data
1: Positive
2: Mixed/ambiguous results
3: Negative
Key: Other
: 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
CLP classification 2013 Health: H317
Environment: H400, H410
EC Risk Classification Click here to view information omn the EU risk phrases N - Dangerous for the environment: R51/53
EC Safety Classification Click here to view information omn the EU safety phrases S36/37, S61
WHO Classification NL - Not listed
UN Number -
Waste disposal & packaging Click here for a description of UN packaging marks -


TRANSLATIONS

for tritosulfuron

Language Name
English tritosulfuron
French tritosulfuron
German Tritosulfuron
Danish tritosulfuron
Italian tritosulfuron
Spanish tritosulfuron
Greek -
Slovenian tritosulfuron
Polish tritosulfuron
Swedish -
Hungarian -
Dutch -

Record last updated: Wednesday 08 May 2019
Contact: aeru@herts.ac.uk