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GET ADDITIONAL DATA HERE!

terbuthylazine
** bellacide ** 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 terbuthylazine

Description: A herbicide to control grass and broad-leaved weeds in a variety of situations including forestry and for control slime-forming algae, fungi, and bacteria in non-agricultural situations

Example pests controlled: Pigwed; Goosefoot; Bladder weed; Dwarf marigold; Blackjack; Starbur; Evening primrose

Example applications: Maize; Sorghum; Apples; Citrus; Bush vines; Non-crop sites including roads, railways, industrial sites

Efficacy & activity: -

Availability status: Current

Introduction & key dates: 1967

EC Regulation 1107/2009 (repealing 91/414):
Status Approved
Dossier rapporteur/co-rapporteur Spain/Hungary
Date inclusion expires 31/12/2021
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

Also used in: Australia, New Zealand

Chemical structure: Click here for further information on the general chemical status information used on this site
Isomerism -
Chemical formula C9H16ClN5
Canonical SMILES CCNC1=NC(=NC(=N1)Cl)NC(C)(C)C
Isomeric SMILES No data
International Chemical Identifier key (InChIKey) FZXISNSWEXTPMF-UHFFFAOYSA-N
International Chemical Identifier (InChI) InChI=1S/C9H16ClN5/c1-5-11-7-12-6(10)13-8(14-7)15-9(2,3)4/h5H2,1-4H3,(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, Microbiocide, Algicide
Substance group Triazine
Minimum active substance purity 930 g/kg, typically 960-980 g/kg
Known relevant impurities EU 2017 dossier - propazine, atrazine, simazine
Substance origin Synthetic
Mode of action Broad-spectrum with strong and rapid effects. Inhibits photosynthesis (photosystem II).
CAS RN 5915-41-3
EC number 227-637-9
CIPAC number 234
US EPA chemical code 080814
PubChem CID 22206
Molecular mass (g mol-1) 229.71
PIN (Preferred Identification Name) N2-tert-butyl-6-chloro-N4-ethyl-1,3,5-triazine-2,4-diamine
IUPAC name N2-tert-butyl-6-chloro-N4-ethyl-1,3,5-triazine-2,4-diamine
CAS name 6-chloro-N-(1,1-dimethylethyl)-N'-ethyl-1,3,5-triazine-2,4-diamine
Other status information -
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 crystalline 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
  • Makhteshim
  • Orion Crop Protection Ltd
  • Sipcam
  • Syngenta
Example products using this active
  • Calaris
  • Skirmish
  • Gardo Gold
UK LERAP status Buffer probably required in UK - see product label
Formulation and application details Usually supplied as a suspension concentrate or suspended emulsion formulation.


ENVIRONMENTAL FATE

for terbuthylazine

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) 6.6 A5 Low
Solubility - In organic solvents at 20oC (mg l-1) 41000 A5 - Acetone -
9800 A5 - Toluene -
12000 A5 - n-Octanol -
410 A5 - n-Hexane -
Melting point (oC) 175 A5 -
Boiling point (oC) Decomposes before boiling A5 -
Degradation point (oC) 224 A5 -
Flashpoint (oC) Not expected to self ignite; Not highly flammable A5 -
Octanol-water partition coefficient at pH 7, 20oC P 2.51 X 1003 Calculated -
Log P 3.4 A5 High
Bulk density (g ml-1)/Specific gravity 1.19 L3 -
Dissociation constant (pKa) at 25oC 1.9 A5 -
Note:
Vapour pressure at 20oC (mPa) 0.152 A5 Low volatility
Henry's law constant at 25oC (Pa m3 mol-1) 2.3 X 10-03 A5 Non-volatile
GUS leaching potential index Click here for a note on the limitations of the GUS index 3.04 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 3.33 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 Neutral solution: 222nm = 385386, 263nm = 3444; [Acidic solution: 223nm = 30103, 263nm=4468; [Basic solution, 223nm = 37426, 263nm = 3395 A5 -
Surface tension (mN m-1) 71.8 A5 at 20oC, 90% 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) 72.0 A5 Moderately persistent
DT50 (lab at 20oC) 72.0 A5 Moderately persistent
DT50 (field) 21.8 A5 Non-persistent
DT90 (lab at 20oC) 353 A5 -
DT90 (field) 72.6 A5 -
DT50 modelling endpoint - - -
Note EU 2017 dossier lab studies DT50 range 38.2-167 days, Soils = 12, Field studies DT50 range 6.43-149 days, DT90 range 1,6-497 days, Soils = 23; EU dossier 2007 lab studies DT90 range 196-837 days; field studies DT50 range 10.0-35.8 days, DT90 range 33.3-119 days
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 -
Aqueous hydrolysis DT50 (days) at 20oC and pH 7 Value Stable A5 -
Note pH variable: stable @ pH 7 and pH 9, 73 days @ pH 5, 50 degC
Water-sediment DT50 (days) 70 A5 Moderately fast
Water phase only DT50 (days) 6 A3 Moderately fast

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 5.1 A5 Moderately mobile
Kfoc 231
1/n 0.93
Notes and range EU dossier Kf range 2.1-10.49 mL/g, Kfoc range 151-333 mL/g, 1/n range 0.88-0.98, Soils=9
pH sensitivity No

Key metabolites:
Metabolite Formation medium Estimated maximum occurrence fraction 1107/2009 relevancy Click here for further information on 1107/2009 relevancy
desethyl-terbuthylazine (Ref: GS26379) This metabolite may cause environmental pollution, click here for further information Soil   0.251   Major fraction, Relevant
hydroxy-terbuthylazine (Ref: GS 23158) This metabolite may cause environmental pollution, click here for further information Soil   0.345   Major fraction, Relevant
2-hydroxy-desethyl-terbuthylazine (Ref: GS 28620) Soil   -   Relevant

Other known metabolites:
Metabolite name and reference Aliases Formation medium / Rate Estimated maximum occurrence fraction Metabolising enzymes
de-t-butyl-hydroxy terbuthylazine MT19 - - -
diamino-chlorotriazine MT20 Plant - -
de-t-butyl-terbuthylazine MT22 - - -
amino-dihydroxy triazine MT24 - - -
terbutryn
(Ref: GS 14260)
Note: Relevant
MT26 Sediment - -


ECOTOXICOLOGY

for terbuthylazine

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) 34 A5 Whole fish Low potential
CT50 (days) 0.8 -
Mammals - Acute oral LD50 (mg kg-1) > 1000 A5 Rat Moderate
Mammals - Short term dietary NOEL (mg kg-1) > 0.22 L2 Rat, 2 year High
(ppm diet) - -
Birds - Acute LD50 (mg kg-1) > 1236 A5 Colinus virginianus Moderate
Birds - Short term dietary (LC50/LD50) > 395 mg kg bw-1 day-1 A5 Anas platyrhynchos -
Fish - Acute 96 hour LC50 (mg l-1) 2.2 A5 Oncorhynchus mykiss Moderate
Fish - Chronic 21 day NOEC (mg l-1) 0.09 A5 Oncorhynchus mykiss Moderate
Aquatic invertebrates - Acute 48 hour EC50 (mg l-1) 21.2 J4 Daphnia magna Moderate
Aquatic invertebrates - Chronic 21 day NOEC (mg l-1) 0.019 A5 Daphnia magna Moderate
Aquatic crustaceans - Acute 96 hour LC50 (mg l-1) 0.167 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) 0.5 A5 Chironomus riparius Moderate
Sediment dwelling organisms - Chronic 28 day NOEC, sediment (mg kg-1) - - -
Aquatic plants - Acute 7 day EC50, biomass (mg l-1) 0.0128 A5 Lemna gibba Moderate
Non-target plants 321 A5 Lettuce
Pre-emergence, EC50
as mL product/ha (Gardoprim Plus Gold containing 187.5 g/l terbuthylazine)
-
439 A5 Lettuce
Post-emergence, EC50
as mL product/ha (Gardoprim Plus Gold containing 187.5 g/l terbuthylazine)
-
Algae - Acute 72 hour EC50, growth (mg l-1) 0.012 A5 Pseudokirchneriella subcapitata Moderate
Algae - Chronic 96 hour NOEC, growth (mg l-1) - - -
Honeybees Contact acute 48 hour LD50 (μg bee-1) > 32 A5 Moderate
Oral acute 48 hour LD50 (μg bee-1) > 22.6 A5 Moderate
Unknown mode acute 48 hour LD50 (μg bee-1) - - -
Earthworms - Acute 14 day LC50 (mg kg-1) > 141.7 A5 Eisenia foetida, corr 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-1 750 >, Mortality
A5 Typhlodromus pyri
-
% Effect - - -
Other arthropod (2) LR50 g ha-1 750 >, Mortality
A5 Aphidius rhopalosiphi
-
% Effect - - -
Soil micro-organisms Nitrogen mineralisation: No significant adverse effect
Carbon mineralisation: No significant adverse effect
A5
Dose: 10.9 mg kg-1 soil
-
Mesocosm study data NOEAEC mg l-1 - - -
NOEAEC mg l-1 - - -


HUMAN HEALTH AND PROTECTION

for terbuthylazine

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) > 1000 A5 Rat Moderate
Mammals - Dermal LD50 (mg kg-1 body weight) > 2000 A5 Rat -
Mammals - Inhalation LC50 (mg l-1) > 5.3 A5 Rat, 4 hr (nose only) -
Other Mammal toxicity endpoints - -
ADI - Acceptable Daily Intake (mg kg-1bw day-1) 0.004 A5 Dog, SF=100 -
ARfD - Acute Reference Dose (mg kg-1bw day-1) 0.008 A5 -
AAOEL - Acute Acceptable Operator Exposure Level (mg kg-1 bw day-1) None reported A1 -
AOEL - Acceptable Operator Exposure Level - Systemic (mg kg-1bw day-1) 0.0032 A5 -
Dermal penetration studies (%) 0.1-2.5 A5 concentration dependent -
Dangerous Substances Directive 76/464 - - -
Exposure Limits - - -
Exposure Routes Public Acceptable for proposed uses
Occupational Acceptable risk for authorised agricultural uses
European MRLs Click here for the EU MRL pesticide database
Drinking Water Standards Non-statutory WHO drinking water guideline 0.007 mg/L UK EA QS database, 2018 -
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 Toxic, may be fatal if inhaled, swallowed or absorbed through skin
Health effects may be delayed
Weak skin sensitiser

: 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
IMDG Transport Code is usually 6.1
CLP classification 2013 Health: H373, H302
EC Risk Classification Click here to view information omn the EU risk phrases Xn - Harmful: R22
EC Safety Classification Click here to view information omn the EU safety phrases S13, S36
WHO Classification III - Slightly hazardous
US EPA Classification (formulation) III - Caution - Slightly toxic
UN Number Usually 1230 or 2763
Waste disposal & packaging Click here for a description of UN packaging marks Packaging Group II (medium danger) or III (minor danger)


TRANSLATIONS

for terbuthylazine

Language Name
English terbuthylazine
French terbuthylazine
German Terbuthylazin
Danish terbutylazin
Italian terbutilazina
Spanish terbutilazina
Greek -
Slovenian terbutilazin
Polish terbutylazyna
Swedish -
Hungarian terbuthylazine
Dutch terbuthylazine

Record last updated: Thursday 23 August 2018
Contact: aeru@herts.ac.uk