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ametryn (Ref: G 34162 )
** ametryne ** Translations

Environmental Fate - Ecotoxicology - Human Health - A to Z Index - Home

SUMMARY

Ametyn is a triazine herbicide that no longer has EU regulatory approval for use. It is moderately soluble in water but much more so in organic solvents. It is quite volatile and not expected to leach to groundwater. It is moderately persistant in soils and can persist for a long time in water under certain conditions. It is moderately toxic to mammals and a recognised irritant. Ametryn is moderately toxic to most aquatic organisms, honey bees and earthworms but less so to birds.

GENERAL INFORMATION Click here for an explantaion of the general chemical status information
for ametryn

Description: A triazine herbicide used to control most annual and broad-leaved weeds

Example pests controlled: Burmuda grass, wiregrass, goosegrass, crabgrass and other grass weeds; Broad-leaved weeds including dallisgrass, thistle, purslane, pigweed, cocklebur, lambsquarters, morning glory and foxtail

Example applications: Fruit including citrus, bananas; Corn; Potatoes; Sugarbeet

Efficacy & activity: -

Availability status: Current

Introduction & key dates: 1964, first registered USA

EC Regulation 1107/2009 (repealing 91/414):
Status Not approved
Dossier rapporteur/co-rapporteur -
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 C9H17N5S
Canonical SMILES CCNC1=NC(=NC(=N1)SC)NC(C)C
Isomeric SMILES No data
International Chemical Identifier key (InChIKey) RQVYBGPQFYCBGX-UHFFFAOYSA-N
International Chemical Identifier (InChI) InChI=1S/C9H17N5S/c1-5-10-7-12-8(11-6(2)3)14-9(13-7)15-4/h6H,5H2,1-4H3,(H2,10,11,12,13,14)
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 Triazine
Minimum active substance purity 96%
Known relevant impurities -
Substance origin Synthetic
Mode of action Selective, systemic absorbed through foliage and roots. Inhibits photosynthesis (photosystem II).
CAS RN 834-12-8
EC number 212-634-7
CIPAC number 133
US EPA chemical code 080801
PubChem CID 13263
Molecular mass (g mol-1) 227.12
PIN (Preferred Identification Name) N2-ethyl-6-(methylsulfanyl)-N4-(propan-2-yl)-1,3,5-triazine-2,4-diamine
IUPAC name N2-ethyl-N4-isopropyl-6-methylthio-1,3,5-triazine-2,4-diamine
CAS name N-ethyl-N'-(1-methylethyl)-6-(methylthio)-1,3,5-triazine-2,4-diamine
Other status information Chemical subject to PIC regulations
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 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 Crop Protection
  • FCC
  • King Tech Corp
  • Ciba-Geigy
  • Makhteshim-Agan
Example products using this active
  • Ametrex
  • Evik
  • Gesapax
  • Almulex
  • Duroplant
UK LERAP status No UK approval for use as a pesticide under EC Regulation 1107/2009
Formulation and application details Available in a range of formulations including emulsifiable concentrates, flowable concentrates and wettable powders.


ENVIRONMENTAL FATE

for ametryn

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) 200 H4 Moderate
Solubility - In organic solvents at 20oC (mg l-1) 56900 R3 - Acetone -
1400 R3 - n-Hexane -
4600 R3 - Toluene -
Melting point (oC) 86.7 E3 -
Boiling point (oC) 337 E3 -
Degradation point (oC) - - -
Flashpoint (oC) Not expected to self ignite; Not highly flammable V3 -
Octanol-water partition coefficient at pH 7, 20oC P 4.27 X 1002 Calculated -
Log P 2.63 H4 Low
Bulk density (g ml-1)/Specific gravity 1.18 L3 -
Dissociation constant (pKa) at 25oC 10.07 DW4 -
Note: Very weak acid
Vapour pressure at 20oC (mPa) 0.365 L3 Low volatility
Henry's law constant at 25oC (Pa m3 mol-1) 4.10 X 10-04 H4 Non-volatile
GUS leaching potential index Click here for a note on the limitations of the GUS index 0.52 Calculated Low 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 1.04 X 10-02 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) 37 H4 Moderately persistent
DT50 (lab at 20oC) 60 Q3 Moderately persistent
DT50 (field) 37 H4 Moderately persistent
DT90 (lab at 20oC) - - -
DT90 (field) - - -
DT50 modelling endpoint - - -
Note Other sources: DT50 70-120 days (R3)
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 - W4 -
Note Slow degradation in UV light
Aqueous hydrolysis DT50 (days) at 20oC and pH 7 Value Stable W4 -
Note Stable to hydrolysis except at extreme pH values e.g. pH 0-1 and pH 13-14.
Water-sediment DT50 (days) - - -
Water phase only DT50 (days) - - -

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 - H3 Moderately mobile
Koc 316
Notes and range General literature Koc range 170-390 mL/g
Freundlich Kf 76.81 R4 Non-mobile
Kfoc 5115
1/n 0.86
Notes and range Kf range 1.35-194.6 mL/g, Kfoc range 38.6-14969 mL/g, 1/n range 0.60-1.22, Soils=3
pH sensitivity -

Key metabolites:
Metabolite Formation medium Estimated maximum occurrence fraction 1107/2009 relevancy Click here for further information on 1107/2009 relevancy
deethyl ametryne Soil   -   -


ECOTOXICOLOGY

for ametryn

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) 33 F3 Low potential
CT50 (days) Not available -
Mammals - Acute oral LD50 (mg kg-1) 1009 F4 Rat Moderate
Mammals - Short term dietary NOEL (mg kg-1) - L2 Rat -
(ppm diet) 50 -
Birds - Acute LD50 (mg kg-1) > 5620 L3 Anas platyrhynchos Low
Birds - Short term dietary (LC50/LD50) - - -
Fish - Acute 96 hour LC50 (mg l-1) 5 L3 Oncorhynchus mykiss Moderate
Fish - Chronic 21 day NOEC (mg l-1) - - -
Aquatic invertebrates - Acute 48 hour EC50 (mg l-1) 28 L3 Daphnia magna Moderate
Aquatic invertebrates - Chronic 21 day NOEC (mg l-1) 0.32 F3 Daphnia magna, LOEC Moderate
Aquatic crustaceans - Acute 96 hour LC50 (mg l-1) 1.7 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) 0.01 F2 Lemna perpusilla, 7 day Moderate
Non-target plants - - -
- - -
Algae - Acute 72 hour EC50, growth (mg l-1) 0.0036 L3 Raphidocelis subcapitata High
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) - - -
Oral acute LD50 (worst case from 24 , 48 and 72 hour values - μg bee-1) > 100 L3 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) 166 L3 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 - - -
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 ametryn

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) 1009 F4 Rat Moderate
Mammals - Dermal LD50 (mg kg-1 body weight) > 2020 E3 Rabbit -
Mammals - Inhalation LC50 (mg l-1) > 5.03 E3 Rat -
Other Mammal toxicity endpoints - -
ADI - Acceptable Daily Intake (mg kg-1bw day-1) 0.015 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 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 Slightly toxic

: 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
Environment: H400, H410
EC Risk Classification Click here to view information omn the EU risk phrases Xn - Harmful: R22
N - Dangerous for the environment: R50, R53
EC Safety Classification Click here to view information omn the EU safety phrases S2, S36, S61, S60
WHO Classification II - Moderately hazardous
US EPA Classification (formulation) III - Caution - Slightly toxic
UN Number -
Waste disposal & packaging Click here for a description of UN packaging marks -


TRANSLATIONS

for ametryn

Language Name
English ametryn
French ametryne
German Ametryn
Danish ametryn
Italian ametrina
Spanish ametrina
Greek ametryn
Slovenian ametrin
Polish ametryna
Swedish -
Hungarian -
Dutch ametryn

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