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cyanazine
** WL 19805 ** DW 3418 ** Translations

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

SUMMARY

Cyanazine is a triazine herbicide approved for use in the EU and many other countries. It is moderately soluble in water and many organic solvents and it is relatively volatile. It is not persistent in soil systems but can often be persistent in water. It is moderately toxic to mammals and may have serious adverse health effects if ingested as it is a neurotoxin, a suspected endocrine disrupter and a development/reproduction toxin. Cyanazine is moderately toxic to most fauna and flora.

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

Description: A pre-emergence herbicide used for general weed control includings grasses and broad-leaved weeds in a range of crops

Example pests controlled: Nightshade; Bindweed; Chickweed; Clover; Crowsfoot; Docks; Plantain; Sorrel; Sowthistle; Stinging nettle; Deadnettle

Example applications: Vegetables including peas, chickpeas, beans, lentils, onions; Potatoes; Sweetcorn

Efficacy & activity: -

Availability status: Current

Introduction & key dates: circa 1967

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 C9H13ClN6
Canonical SMILES CCNC1=NC(=NC(=N1)Cl)NC(C)(C)C#N
Isomeric SMILES No data
International Chemical Identifier key (InChIKey) MZZBPDKVEFVLFF-UHFFFAOYSA-N
International Chemical Identifier (InChI) InChI=1S/C9H13ClN6/c1-4-12-7-13-6(10)14-8(15-7)16-9(2,3)5-11/h4H2,1-3H3,(H2,12,13,14,15,16)
2D structure diagram/image available? Yes

Click to access the Cambridge Crystallographic Data Centre (CCDC) website
Cambridge Crystallographic Data Centre diagrams:
Common Name Relationship Link
Cyanazine - Click here for the CCDC structure diagram

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 -
Known relevant impurities -
Substance origin Synthetic
Mode of action Selective, systemic with contact and residual action. Inhibits photosynthesis (photosystem II).
CAS RN 21725-46-2
EC number 244-544-9
CIPAC number 230
US EPA chemical code 100101
PubChem CID 30773
Molecular mass (g mol-1) 240.69
PIN (Preferred Identification Name) 2-{[4-chloro-6-(ethylamino)-1,3,5-triazin-2-yl]amino}-2-methylpropanenitrile
IUPAC name 2-(4-chloro-6-ethylamino-1,3,5-triazin-2-ylamino)-2-methylpropiononitrile
CAS name 2-((4-chloro-6-(ethylamino)-1,3,5-triazin-2-yl)amino)-2-methylpropanenitrile
Other status information Potential groundwater contaminant; 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 Kochia scoparia
Physical state White 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
  • Syngenta
  • Shell Chemical Co
  • DuPont
  • BASF
Example products using this active
  • Fortrol
  • Bladex
  • Payze
  • Blanchol
UK LERAP status No UK approval for use as a pesticide under EC Regulation 1107/2009
Formulation and application details Supplied in a wide range of formulations including suspension concentrates, wettable powders, granules & water-dispersible powders.


ENVIRONMENTAL FATE

for cyanazine

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) 171 K4 Moderate
Solubility - In organic solvents at 20oC (mg l-1) 195000 L3 - Acetone -
45000 L3 - Ethanol -
15000 L3 - Benzene -
15000 L3 - Hexane -
Melting point (oC) 168 L3 -
Boiling point (oC) - - -
Degradation point (oC) - - -
Flashpoint (oC) - - -
Octanol-water partition coefficient at pH 7, 20oC P 1.26 X 1002 Calculated -
Log P 2.1 H4 Low
Bulk density (g ml-1)/Specific gravity 1.29 L3 -
Dissociation constant (pKa) at 25oC 12.9 DW4 -
Note: Very weak acid
Vapour pressure at 20oC (mPa) 0.000213 H4 Low volatility
Henry's law constant at 25oC (Pa m3 mol-1) 6.60 X 10-06 H4 Non-volatile
GUS leaching potential index Click here for a note on the limitations of the GUS index 2.07 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 6.25 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 Low
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) 16 K4 Non-persistent
DT50 (lab at 20oC) 16 K4 Non-persistent
DT50 (field) - - -
DT90 (lab at 20oC) - - -
DT90 (field) - - -
DT50 modelling endpoint - - -
Note Other sources: DT50 12-25 days (R3)
Dissipation rate RL50 on plant matrix Value - - -
Note -
Dissipation rate RL50 on and in plant matrix Value 4.0 R4 -
Note Various grasses, n=3
Aqueous photolysis DT50 (days) at pH 7 Value Stable L3 -
Note -
Aqueous hydrolysis DT50 (days) at 20oC and pH 7 Value Stable L3 -
Note Stable pH 5 to pH 9, hydrolysed by strong acids and alkalis
Water-sediment DT50 (days) 84 K4 Moderately fast
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 - G3 Moderately mobile
Koc 190
Notes and range Other sources: 30-427 mL/g (R3)
Freundlich Kf - - -
Kfoc -
1/n -
Notes and range -
pH sensitivity -


ECOTOXICOLOGY

for cyanazine

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) 157 P4 (Other literature Log BCF range 2.3-4.1 (R3)) Threshold for concern
CT50 (days) Not available -
Mammals - Acute oral LD50 (mg kg-1) 288 F4 Rat Moderate
Mammals - Short term dietary NOEL (mg kg-1) - L2 Rat, 2 year -
(ppm diet) 12 -
Birds - Acute LD50 (mg kg-1) 400 L3 Phasianidae Moderate
Birds - Short term dietary (LC50/LD50) - - -
Fish - Acute 96 hour LC50 (mg l-1) 10 L2 Rasbora heteromorpha Moderate
Fish - Chronic 21 day NOEC (mg l-1) - - -
Aquatic invertebrates - Acute 48 hour EC50 (mg l-1) 49 J4 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) 0.051 F3 Lemna gibba Moderate
Non-target plants - - -
- - -
Algae - Acute 72 hour EC50, growth (mg l-1) 0.2 F4 Scenedesmus quadricauda Moderate
Algae - Chronic 96 hour NOEC, growth (mg l-1) 0.009 J4 Green algae Moderate
Honeybees Contact acute 48 hour LD50 (μg bee-1) 100 L3 Moderate
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) 600 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 - - -
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 cyanazine

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) 288 F4 Rat Moderate
Mammals - Dermal LD50 (mg kg-1 body weight) > 2000 L3 Rabbit -
Mammals - Inhalation LC50 (mg l-1) 2.46 L3 Rat -
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 Non-statutory WHO drinking water guideline 0.0006 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 USEPA - possible human carcinogen

: 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 Prevent generation of spray mists
CLP classification 2013 -
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, S37, S60, S61
WHO Classification II - Moderately hazardous
US EPA Classification (formulation) II, III - Warning - Moderately toxic, Caution - Slightly toxic
UN Number -
Waste disposal & packaging Click here for a description of UN packaging marks -


TRANSLATIONS

for cyanazine

Language Name
English cyanazine
French cyanazine
German Cyanazin
Danish cyanazin
Italian cianazina
Spanish cianazina
Greek cyanazine
Slovenian cianazin
Polish cyjanazyna
Swedish cyanazin
Hungarian cianazin
Dutch cyanazin

Record last updated: Tuesday 30 October 2018
Contact: aeru@herts.ac.uk