Select Option
Home
A to Z
Search
Terms & Conditions
Support Information
Purchasing & Other Services
Video User Guides
GET ADDITIONAL DATA HERE!

terbutryn (Ref: GS 14260)
** terbutryne ** 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 terbutryn

Description: A pre-emergence herbicide used to control some grasses and broad-leaved weeds. Also used to control aquatic algae. Also a pesticide transformation product.

Example pests controlled: Chickweed; Poppies; Blackgrass; Annual meadow grass; Deadnettle; Capeweed; Hedge mustard; Shepherd's purse; Bindweed; Lupins

Example applications: Cereals including wheat, barley, oats, triticale; Sorghum; Sugarcane; Sunflowers; Peas; potatoes

Efficacy & activity: -

Availability status: Current

Introduction & key dates: 1966

EC Regulation 1107/2009 (repealing 91/414):
Status Not approved
Dossier rapporteur/co-rapporteur Not applicable
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 None
Chemical formula C10H19N5S
Canonical SMILES CCNC1=NC(=NC(=N1)SC)NC(C)(C)C
Isomeric SMILES No data
International Chemical Identifier key (InChIKey) IROINLKCQGIITA-UHFFFAOYSA-N
International Chemical Identifier (InChI) InChI=1S/C10H19N5S/c1-6-11-7-12-8(15-10(2,3)4)14-9(13-7)16-5/h6H2,1-5H3,(H2,11,12,13,14,15
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, Metabolite
Metabolite Type Soil
Substance group Triazine
Minimum active substance purity -
Known relevant impurities -
Substance origin Synthetic
Mode of action Selective, absorbed through roots and foliage and translocated. Inhibits photosynthesis (photosystem II).
CAS RN 886-50-0
EC number 212-950-5
CIPAC number 212
US EPA chemical code 080813
PubChem CID 13450
Molecular mass (g mol-1) 241.36
PIN (Preferred Identification Name) N2-tert-butyl-N4-ethyl-6-(methylsulfanyl)-1,3,5-triazine-2,4-diamine
IUPAC name N2-tert-butyl-N4-ethyl-6-methylthio-1,3,5-triazine-2,4-diamine
CAS name N-(1,1-dimethylethyl)-N'-ethyl-6-(methylthio)-1,3,5-triazine-2,4-diamine
Other status information Potential groundwater contaminant
Relevant Environmental Water Quality Standards -
Herbicide Resistance Classification (HRAC) C1
Herbicide Resistance Classification (WSSA) 5
Insecticide Resistance Classification (IRAC) Not applicable
Fungicide Resistance Classification (FRAC) Not applicable
Examples of recorded resistance -
Physical state White or colourless crystalline powder
Related substances & organisms -

Can be a metabolite of:
Parent Formation medium Estimated maximum occurrence fraction 1107/2009 relevancy Click here for further information on 1107/2009 relevancy

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
  • Agan
  • Scotts
  • Ciba Geigy
  • Makhteshim Agan
Example products using this active
  • Igran
  • Shortstop
  • Plantonit
  • Senate
  • Terbutrex
UK LERAP status No UK approval for use as a pesticide under EC Regulation 1107/2009
Formulation and application details Usually formulated as a suspension concentrate, granules or wettable powder.


ENVIRONMENTAL FATE

for terbutryn

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) 25 A5 Low
Solubility - In organic solvents at 20oC (mg l-1) 220000 L3 - Acetone -
9000 L3 - Hexane -
130000 L3 - n-Octanol -
220000 L3 - Methanol -
Melting point (oC) 104 L3 -
Boiling point (oC) - - -
Degradation point (oC) - - -
Flashpoint (oC) - - -
Octanol-water partition coefficient at pH 7, 20oC P 4.57 X 1003 Calculated -
Log P 3.66 A5 High
Bulk density (g ml-1)/Specific gravity 1.12 L3 -
Dissociation constant (pKa) at 25oC 4.3 L3 -
Note: Weak base
Vapour pressure at 20oC (mPa) 0.13 A5 Low volatility
Henry's law constant at 25oC (Pa m3 mol-1) 1.50 X 10-03 L3 Non-volatile
GUS leaching potential index Click here for a note on the limitations of the GUS index 2.40 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 1.04 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) 74 K4 Moderately persistent
DT50 (lab at 20oC) 74 K4 Moderately persistent
DT50 (field) 52 H4 Moderately persistent
DT90 (lab at 20oC) - - -
DT90 (field) - - -
DT50 modelling endpoint - - -
Note Other sources: DT50 42 days (DW4); 14-50 days (Q3 lab aerobic)
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 0.5 Q2 Fast
Note -
Aqueous hydrolysis DT50 (days) at 20oC and pH 7 Value Stable A5 -
Note Stable pH 5 to pH 9
Water-sediment DT50 (days) 60 Q2 Moderately fast
Water phase only DT50 (days) 27 K3 Slow

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 2432
Notes and range EU dossier, 2 values 2000 & 2863 mL/g
Freundlich Kf 30.7 A5 Slightly mobile
Kfoc 518
1/n 1.10
Notes and range EU dossier Kf range 4.3-109.9 mL/g, Kfoc range 392-605 mL/g, 1/n range 1.01-1.35, Soils=5
pH sensitivity -


ECOTOXICOLOGY

for terbutryn

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) 72.4 Q3 (Other literature Log BCF range 1.1-1.7 (R3)) Low potential
CT50 (days) 0.5 -
Mammals - Acute oral LD50 (mg kg-1) > 2500 L3 Rat Low
Mammals - Short term dietary NOEL (mg kg-1) - L2 Rat, 2 year -
(ppm diet) 300 -
Birds - Acute LD50 (mg kg-1) > 4640 L3 Anas platyrhynchos Low
Birds - Short term dietary (LC50/LD50) - - -
Fish - Acute 96 hour LC50 (mg l-1) > 1.1 L3 Oncorhynchus mykiss Moderate
Fish - Chronic 21 day NOEC (mg l-1) - - -
Aquatic invertebrates - Acute 48 hour EC50 (mg l-1) > 2.66 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) 0.0024 F4 Pseudokirchneriella subcapitata High
Algae - Chronic 96 hour NOEC, growth (mg l-1) 0.0016 P3 Chlorella fusca Moderate
Honeybees (Apis spp.) Contact acute LD50 (worst case from 24 , 48 and 72 hour values - μg bee-1) > 225 L3 Low
Oral acute LD50 (worst case from 24 , 48 and 72 hour values - μg bee-1) - - -
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) > 170 K4 Eisenia foetida Moderate
Earthworms - Chronic NOEC, reproduction (mg kg-1) - - -
Other soil macro-organisms Acute LC50 (mg kg-1) - - -
Chronic NOEC (mg kg-1) - - -
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 terbutryn

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) > 2500 L3 Rat Low
Mammals - Dermal LD50 (mg kg-1 body weight) > 2000 L3 Rat -
Mammals - Inhalation LC50 (mg l-1) 2.2 L3 Rat -
Other Mammal toxicity endpoints - -
ADI - Acceptable Daily Intake (mg kg-1bw day-1) 0.027 L3 -
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 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 Genotoxic Endocrine disrupter Reproduction / development effects Cholinesterase inhibitor Neurotoxicant

A3; B0; C0; D0; E3

-

Respiratory tract irritant Skin irritant Skin sensitiser Eye irritant Phototoxicant

-

General human health issues USEPA - possible human carcinogen
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 No information available
CLP classification 2013 Health: H302, H317, H319, H332
Environment: H400, H410, H413
EC Risk Classification Click here to view information omn the EU risk phrases N - Dangerous for the environment: R52/53
EC Safety Classification Click here to view information omn the EU safety phrases S2, S29, S36/37, S46
WHO Classification III - Slightly hazardous
UN Number -
Waste disposal & packaging Click here for a description of UN packaging marks -


TRANSLATIONS

for terbutryn

Language Name
English terbutryn
French terbutryne
German Terbutryn
Danish terbutryn
Italian terbutrina
Spanish terbutrina
Greek -
Slovenian terbutrin
Polish terbutryn
Swedish -
Hungarian terbutrin
Dutch -

Record last updated: Wednesday 27 November 2019
Contact: aeru@herts.ac.uk