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methabenzthiazuron (Ref: BAY 74283 )
** methibenzuron ** S25128 ** 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 methabenzthiazuron

Description: A herbicide used to control a broad spectrum of weeds in cereals and other crops

Example pests controlled: Broad-leaved weeds; Grasses including black-grass, meadow rasses, wild oats

Example applications: Cereals; Legumes; Onions & garlic

Efficacy & activity: -

Availability status: Current

Introduction & key dates: 1968, Germany

EC Regulation 1107/2009 (repealing 91/414):
Status Not approved
Dossier rapporteur/co-rapporteur Sweden
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 C10H11N3OS
Canonical SMILES CNC(=O)N(C)C1=NC2=CC=CC=C2S1
Isomeric SMILES No data
International Chemical Identifier key (InChIKey) RRVIAQKBTUQODI-UHFFFAOYSA-N
International Chemical Identifier (InChI) InChI=1S/C10H11N3OS/c1-11-9(14)13(2)10-12-7-5-3-4-6-8(7)15-10/h3-6H,1-2H3,(H,11,14)
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 Urea
Minimum active substance purity -
Known relevant impurities -
Substance origin Synthetic
Mode of action Selective, absorbed through roots and leaves. Photosynthetic electron transport inhibitor at the photosystem II.
CAS RN 18691-97-9
EC number 242-505-0
CIPAC number 201
US EPA chemical code 281300
PubChem CID 29216
Molecular mass (g mol-1) 221.27
PIN (Preferred Identification Name) -
IUPAC name 1-(1,3-benzothiazol-2-yl)-1,3-dimethylurea
CAS name N-2-benzothiazolyl-N,N'-dimethylurea
Other status information -
Relevant Environmental Water Quality Standards -
Herbicide Resistance Classification (HRAC) C2
Herbicide Resistance Classification (WSSA) 7
Insecticide Resistance Classification (IRAC) Not applicable
Fungicide Resistance Classification (FRAC) Not applicable
Examples of recorded resistance -
Physical state Colourless crystals
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
  • Zagro Singapore Pte. Ltd.
  • Jiangsu Overseas Group Corp.
Example products using this active
  • Tribull
  • Trilixon
UK LERAP status No UK approval for use as a pesticide under EC Regulation 1107/2009
Formulation and application details Usually supplied as a wettable powder.


ENVIRONMENTAL FATE

for methabenzthiazuron

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) 60 K4 Moderate
Solubility - In organic solvents at 20oC (mg l-1) 115900 C4 - Acetone -
1500 C4 - Hexane -
75000 C4 - Toluene -
65900 C4 - Methanol -
Melting point (oC) 120 L3 -
Boiling point (oC) - - -
Degradation point (oC) - - -
Flashpoint (oC) - - -
Octanol-water partition coefficient at pH 7, 20oC P 4.37 X 1002 Calculated -
Log P 2.64 C4 Low
Bulk density (g ml-1)/Specific gravity 1.33 Q2 -
Dissociation constant (pKa) at 25oC - - -
Note:
Vapour pressure at 20oC (mPa) 5.90 X 10-03 L3 Low volatility
Henry's law constant at 25oC (Pa m3 mol-1) 5.10 X 10-03 C4 Non-volatile
GUS leaching potential index Click here for a note on the limitations of the GUS index 2.72 Calculated Transition state
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 2.25 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 - - -
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) 135 K4 Persistent
DT50 (lab at 20oC) 135 K4 Persistent
DT50 (field) - - -
DT90 (lab at 20oC) - - -
DT90 (field) - - -
DT50 modelling endpoint - - -
Note: -
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 L3 -
Note Very slow
Aqueous hydrolysis DT50 (days) at 20oC and pH 7 Value 365 K4 Very persistent
Note -
Water-sediment DT50 (days) 182 K4 Slow
Water phase only DT50 (days) 90 K4 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 - C3 Slightly mobile
Koc 527
Notes and range -
Freundlich Kf - - -
Kfoc -
1/n -
Notes and range -
pH sensitivity -


ECOTOXICOLOGY

for methabenzthiazuron

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) 75 Q2 Estimated Low potential
CT50 (days) Not available -
Mammals - Acute oral LD50 (mg kg-1) > 5000 L3 Rat Low
Mammals - Short term dietary NOEL (mg kg-1) - L2 Rat, 2 year -
(ppm diet) 150 -
Birds - Acute LD50 (mg kg-1) 1000 V3 Phasianidae Moderate
Birds - Short term dietary (LC50/LD50) - - -
Fish - Acute 96 hour LC50 (mg l-1) 15.9 L3 Oncorhynchus mykiss Moderate
Fish - Chronic 21 day NOEC (mg l-1) - - -
Aquatic invertebrates - Acute 48 hour EC50 (mg l-1) 30.6 L3 Daphnia magna Moderate
Aquatic invertebrates - Chronic 21 day NOEC (mg l-1) - - -
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) - - -
Non-target plants - - -
- - -
Algae - Acute 72 hour EC50, growth (mg l-1) 0.033 F4 Scenedesmus quadricauda Moderate
Algae - Chronic 96 hour NOEC, growth (mg l-1) 0.018 Q2 Unknown species Moderate
Honeybees Contact acute 48 hour LD50 (μg bee-1) 0.8 K4 High
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) 840 Q3 Moderate
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 Harmful AA2 Typhlodromus pyri -
Other arthropod (2) LR50 g ha-1 - - -
% Effect Harmful AA2 Chrysoperla carnea -
Soil micro-organisms - - -
Mesocosm study data NOEAEC mg l-1 - - -
NOEAEC mg l-1 - - -


HUMAN HEALTH AND PROTECTION

for methabenzthiazuron

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 L3 Rat Low
Mammals - Dermal LD50 (mg kg-1 body weight) > 5000 L3 Rat -
Mammals - Inhalation LC50 (mg l-1) 5.12 L3 Rat, 4 hr -
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 - - -
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 No further information available

: 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 No information available
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 III - Slightly hazardous
US EPA Classification (formulation) IV - Caution - Not acutely toxic
UN Number -
Waste disposal & packaging Click here for a description of UN packaging marks -


TRANSLATIONS

for methabenzthiazuron

Language Name
English methabenzthiazuron
French methabenzthiazuron
German Methabenzthiazuron
Danish methabenzthiazuron
Italian metabentiazuron
Spanish metabenztiazuron
Greek methabenzthiazuron
Slovenian metabenztiazuron
Polish metabenztiazuron
Swedish metabenstiazuron
Hungarian -
Dutch methabenzthiazuron

Record last updated: Wednesday 23 May 2018
Contact: aeru@herts.ac.uk