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1,2,4-triazole (Ref: CGA 71019)
** 1H-1,2,4-triazole ** BF 480-16 ** RH-0118 ** 1,2,4-T ** AE C500859 ** Translations

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

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

Description: Chemical transformation product that shos some pesticidal activity

Availability status: Not applicable

Introduction & key dates: Not applicable

EC Regulation 1107/2009 (repealing 91/414):
Status Not applicable
Dossier rapporteur/co-rapporteur Not applicable
Date inclusion expires Not applicable
EU Candidate for substitution (CfS) Not applicable
Listed in EU database No

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

Chemical structure: Click here for further information on the general chemical status information used on this site
Isomerism -
Chemical formula C2H3N3
Canonical SMILES C1=NC=NN1
Isomeric SMILES No data
International Chemical Identifier key (InChIKey) NSPMIYGKQJPBQR-UHFFFAOYSA-N
International Chemical Identifier (InChI) InChI=1S/C2H3N3/c1-3-2-5-4-1/h1-2H,(H,3,4,5)
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 Metabolite
Metabolite Type Soil, Groundwater, Plants, Animals
Substance group Triazole
Minimum active substance purity N/a
Known relevant impurities Not applicable
Substance origin Synthetic
Mode of action Not applicable
CAS RN 288-88-0
EC number 206-022-9
CIPAC number -
US EPA chemical code Not applicable
PubChem CID -
Molecular mass (g mol-1) 69.03
PIN (Preferred Identification Name) -
IUPAC name 1H-1,2,4-triazole
CAS name 1,2,4-triazole
Other status information -
Relevant Environmental Water Quality Standards -
Herbicide Resistance Classification (HRAC) Not applicable
Herbicide Resistance Classification (WSSA) Not applicable
Insecticide Resistance Classification (IRAC) Not applicable
Fungicide Resistance Classification (FRAC) Not applicable
Examples of recorded resistance -
Physical state -
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
hexaconazole Soil     Not relevant
myclobutanil Soil     Minor fraction
penconazole Soil   0.386   Major fraction, Relevant
amitrole Soil     Major fraction
cyproconazole Soil   0.170   Major fraction, Not relevant
fenbuconazole Soil   0.124   Major fraction, Relevant
epoxiconazole Soil   0.066   Minor fraction, Relevant
triadimenol Soil   0.21   Major fraction, Relevant
ipconazole Soil   0.237   Relevant, Major fraction
propiconazole Soil   0.430   Major fraction, Relevant
bitertanol Soil   0.44   Major fraction, Relevant
tebuconazole Soil   0.09   Minor fraction, Relevant
mefentrifluconazole Soil   0.051   Minor fraction; Relevant
metconazole Soil   0.091   Minor fraction, Relevant
fluquinconazole Soil   0.189   Major fraction, Relevant
difenoconazole Soil   0.23   Major fraction, Relevancy unknown
paclobutrazol Soil   0.03   Minor fraction, Relevant

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
  • Not applicable
Example products using this active -
UK LERAP status Not applicable
Formulation and application details -


ENVIRONMENTAL FATE

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) 730000 A5 High
Solubility - In organic solvents at 20oC (mg l-1) - - -
Melting point (oC) 121 Q2 -
Boiling point (oC) - - -
Degradation point (oC) - - -
Flashpoint (oC) - - -
Octanol-water partition coefficient at pH 7, 20oC P 1.00 X 10-01 Calculated -
Log P -1.0 A4 Low
Bulk density (g ml-1)/Specific gravity - - -
Dissociation constant (pKa) at 25oC 2.2 Q3 -
Note: Strong acid
Vapour pressure at 20oC (mPa) 0.022 A4 Low volatility
Henry's law constant at 25oC (Pa m3 mol-1) 0.155 V3 Moderately volatile
GUS leaching potential index Click here for a note on the limitations of the GUS index 1.78 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 2.02 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) 10 A5 Non-persistent
DT50 (lab at 20oC) 8.2 A5 Non-persistent
DT50 (field) - - -
DT90 (lab at 20oC) 31 A5 -
DT90 (field) - - -
DT50 modelling endpoint - - -
Note EU dossiers of the various parents give Lab values DT50 range 5.0-9.9 days, DT90 range 21-41 days; Focus studies DT50 7.0-13.3 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 A3 -
Note -
Aqueous hydrolysis DT50 (days) at 20oC and pH 7 Value Stable A5 -
Note Stable pH 5 to pH 9, 25 degC
Water-sediment DT50 (days) 300 A4 Slow
Water phase only DT50 (days) 300 A4 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 - - -
Koc -
Notes and range -
Freundlich Kf 0.719 A4 Moderately mobile
Kfoc 112
1/n 0.91
Notes and range EU dossier kf range 0.234-0.833, kfoc range 43-202 mL/g, 1/n range 0.827-1.016, Soils=5
pH sensitivity No


ECOTOXICOLOGY

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) - - -
CT50 (days) - -
Mammals - Acute oral LD50 (mg kg-1) > 1650 A5 Rat Moderate
Mammals - Short term dietary NOEL (mg kg-1) - - -
(ppm diet) - -
Birds - Acute LD50 (mg kg-1) 316 V3 Phasianidae Moderate
Birds - Short term dietary (LC50/LD50) - - -
Fish - Acute 96 hour LC50 (mg l-1) 498 A5 Oncorhynchus mykiss Low
Fish - Chronic 21 day NOEC (mg l-1) 3.2 A5 Oncorhynchus mykiss Moderate
Aquatic invertebrates - Acute 48 hour EC50 (mg l-1) > 100 A5 Daphnia magna Low
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) 8.2 A5 Pseudokirchneriella subcapitata Moderate
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) - - -
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) > 1000 A5 Eisenia foetida Low
Earthworms - Chronic 14 day NOEC, reproduction (mg kg-1) 0.071 A5 Eisenia foetida High
Other soil macro-organisms - e.g. Collembola LR50 / EC50 / NOEC / % Effect 1.8 A4 Folsomia candida, 28 day NOEC mg kg-1 -
Other arthropod (1) LR50 g ha-1 - - -
% Effect - - -
Other arthropod (2) LR50 g ha-1 - - -
% Effect - - -
Soil micro-organisms Nitrogen mineralisation: No significant adverse effect
Carbon mineralisation: No significant adverse effect
A5
Dose: 0.353 mg kg-1 soil, 28 days
-
Mesocosm study data NOEAEC mg l-1 - - -
NOEAEC mg l-1 - - -


HUMAN HEALTH AND PROTECTION

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) > 1650 A5 Rat Moderate
Mammals - Dermal LD50 (mg kg-1 body weight) - - -
Mammals - Inhalation LC50 (mg l-1) - - -
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 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

-

A0; B0; C3; D0; E0

-

-

-

Respiratory tract irritant Skin irritant Skin sensitiser Eye irritant Phototoxicant

-

-

General human health issues No further information available
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, H319, H361d
EC Risk Classification Click here to view information omn the EU risk phrases Reproduction risk category 3: R63
Xn - Harmful: R22
Xi - Irritant: R36
EC Safety Classification Click here to view information omn the EU safety phrases S2, S36/37
WHO Classification NL - Not listed
UN Number -
Waste disposal & packaging Click here for a description of UN packaging marks -


TRANSLATIONS

Language Name
English 1,2,4-triazole
French -
German -
Danish -
Italian -
Spanish -
Greek -
Slovenian 1,2,4-triazol
Polish 1,2,4-triazol
Swedish -
Hungarian -
Dutch -

Record last updated: Tuesday 02 July 2019
Contact: aeru@herts.ac.uk