Propiconazole (Ref: CGA 64250)

Propiconazole (Ref: CGA 64250)	Last updated: 17/08/2025
(Also known as: binghuanzuo)

SUMMARY

Hazard alerts

The following alerts are based on the data in the tables below. An absence of an alert does not imply the substance has no implications for human health, biodiversity or the environment but just that we do not have the data to form a judgement. These hazard alerts do not take account of usage patterns or exposure, thus do not represent risk.

Environmental fate	Ecotoxicity	Human health
Environmental fate Moderate alert: Moderately persistent; Drainflow: Slightly mobile; Potential for particle bound transport: Medium	Ecotoxicity Moderate alert: Birds chronic ecotoxicity: Moderate; Fish acute ecotoxicity: Moderate; Fish chronic ecotoxicity: Moderate; Daphnia acute ecotoxicity: Moderate; Daphnia chronic ecotoxicity: Moderate; Earthworms acute ecotoxicity: Moderate; Earthworms chronic ecotoxicity: Moderate	Human health High alert: Endocrine disrupter; Reproduction/development effects

GENERAL INFORMATION

Description

A systemic fungicide with a broad range of activity and a wide range of agricultural cropping applications

Example pests controlled

Diseases caused by Erysiphe graminis; Leptosphaeria nodorum; Pseudocerosporella herpotrichoides; Puccinia spp.; Pyrenophora teres; Rhynchosporium secalis; Septoria spp.

Example applications

Mushrooms; Corn; Wild rice; Peanuts; Amonds; Sorghum; Oats; Pecan; Fruit including apricots, bananas, plums, prunes, peaches & nectarines

Efficacy & activity

Wheat/Eyespot=Low; Wheat/Mildew=Low; Wheat/Septoria=Low; Wheat/Rust=Low; Barley/Rust=Low; Corn/Northern Leaf blight=Moderate; Corn/Rust=Moderate; Corn/Eyespot=High; Soybean/Blight=Low; Soybean/Anthracnose=High; Soybean/Brown spot=Moderate; Soybean/Rust=High

GB regulatory status

GB COPR regulatory status

Not approved

Date COPR inclusion expires

Expired

GB LERAP status

No UK approval for use as a plant protection agent

EC Regulation 1107/2009 (repealing 91/414)

EC Regulation 1107/2009 status

Not approved

Dossier rapporteur/co-rapporteur

Finland/UK

Date EC 1107/2009 inclusion expires

Expired

EU Candidate for substitution (CfS)

Not applicable

Listed in EU database

Yes

Approved for use (✓) under EC 1107/2009 in the following EU Member States

ATAustria	BEBelgium	BGBulgaria	CYCyprus	CZCzech Republic	DEGermany	DKDenmark	EEEstonia	ELGreece

ESSpain	FIFinland	FRFrance	HRCroatia	HUHungary	IEIreland	ITItaly	LTLithuania	LULuxembourg

LVLatvia	MTMalta	NLNetherlands	PLPoland	PTPortugal	RORomania	SESweden	SISlovenia	SKSlovakia

Approved for use (✓) under EC 1107/2009 by Mutual Recognition of Authorisation and/or national regulations in the following EEA countries

ISIceland	NONorway

Additional information

Also used in

Australia; Egypt

Chemical structure

Isomerism

Propiconazole exhibits stereoisomerism due to its chiral molecular structure, resulting in a racemic mixture of four stereoisomers. These include two pairs of enantiomers, which are further classified into cis- and trans-diastereomers.

Chemical formula

C₁₅H₁₇Cl₂N₃O₂

Canonical SMILES

CCCC1COC(O1)(CN2C=NC=N2)C3=C(C=C(C=C3)Cl)Cl

Isomeric SMILES

No data

International Chemical Identifier key (InChIKey)

STJLVHWMYQXCPB-UHFFFAOYSA-N

International Chemical Identifier (InChI)

InChI=1S/C15H17Cl2N3O2/c1-2-3-12-7-21-15(22-12,8-20-10-18-9-19-20)13-5-4-11(16)6-14(13)17/h4-6,9-10,12H,2-3,7-8H2,1H3

2D structure diagram/image available?

Yes

Cambridge Crystallographic Data Centre diagrams

Common Name	Relationship	Link
propiconazole	Unstated isomer

General status

Pesticide type

Fungicide; Other substance

Other bioactivity & uses

Biocide; Slimicide; Wood preservative; Disinfectant

Substance groups

Triazole fungicide; Conazole fungicide

Minimum active substance purity

930 g kg⁻¹

Known relevant impurities

EU dossier - None declared

Substance origin

Synthetic

Mode of action

Systemic with curative and protective action, works via the demethylation of C-14 during ergosterol biosynthesis

CAS RN

60207-90-1

EC number

262-104-4

CIPAC number

408

US EPA chemical code

122101

PubChem CID

43234

CLP index number

613-205-00-0

Molecular mass

342.22

PIN (Preferred Identification Name)

IUPAC name

(2RS,4RS;2RS,4SR)-1-[2-(2,4-dichlorophenyl)-4-propyl-1,3-dioxolan-2-ylmethyl]-1H-1,2,4-triazole

CAS name

1-((2-(2,4-dichlorophenyl)-4-propyl-1,3-dioxolan-2-yl)methyl)-1H-1,2,4-triazole

Forever chemical

Other status information

Some applications may be approved under GB Biocides Products Regulations

Relevant Environmental Water Quality Standards

Herbicide Resistance Class (HRAC MoA class)

Not applicable

Herbicide Resistance Class (WSSA MoA class)

Not applicable

Insecticide Resistance Class (IRAC MoA class)

Not applicable

Fungicide Resistance Class (FRAC MOA class)

Examples of recorded resistance

Physical state

Clear to pale yellow viscous liquid depending on the ratio of isomers

Related substances & organisms

cis-propiconazole

trans-propiconazole

Commercial

Property

Value

Availability status

Current

Introduction & key dates

1980, introduced; 2019, withdrawn UK

Example manufacturers & suppliers of products using this active now or historically

Greencrop
Makhteshim-Agan
Syngenta
Ciba Geigy
Zhejiang Heben Pesticide & Chemicals Co.
Ltd

Example products using this active

Bumper 250EC
Cherokee
Menara
Tilt
Mantis
Banner Maxx
Heben Propiconazole 550EC

Formulation and application details

Often supplied as emulsifiable concentrates or wettable powder

Commercial production

The commercial production of propiconazole involves a multi-step chemical synthesis that typically begins with ethanone-1-(2,4-dichlorophenyl), which undergoes condensation with 1,2-pentanediol to form a dioxolane intermediate. This intermediate is then brominated in dichloromethane to produce a bromomethyl derivative, which finally undergoes nucleophilic substitution with a sodium triazole salt in dimethyl sulfoxide at elevated temperatures to yield propiconazole.

Impact on climate of production and use

Data for the amount of life cycle GHGs produced by propconazole are not available in the public domain. However, whilst estimates vary, more general data suggests that between 11 and 30 kilograms of CO₂e is emitted per kilogram of fungicide produced.

ENVIRONMENTAL FATE

Property

Value

Source; quality score; and other information

Interpretation

Solubility - In water at 20 °C (mg l⁻¹)

150

Moderate

Solubility - In organic solvents at 20 °C (mg l⁻¹)

1585

n-Heptane

Miscible

Acetone

Miscible

Methanol

Miscible

Xylene

Melting point (°C)

-23

Boiling point (°C)

Decomposes before boiling

Degradation point (°C)

355

Flashpoint (°C)

Octanol-water partition coefficient at pH 7, 20 °C

5.25 X 10⁰³

Calculated

Log P

3.72

High

Fat solubility of residues

Solubility

Soluble

Data type

Regulatory data - observed in metabolism and farm animal feeding studies

Density (g ml⁻¹)

1.09

Dissociation constant pKa) at 25 °C

1.09

Very weak base

Vapour pressure at 20 °C (mPa)

0.056

Low volatility

Henry's law constant at 25 °C (Pa m³ mol⁻¹)

9.20 X 10^-05

Non-volatile

Volatilisation as max % of applied dose lost

From plant surface

24 hr

Volatilisation is potentially a concern for short and long range air transport

From soil surface

Negligible

24 hr

Maximum UV-vis absorption L mol⁻¹ cm⁻¹

220 nm = 11666

Surface tension (mN m⁻¹)

55.0

at 20 °C 90%

Degradation

Property

Value

Source; quality score; and other information

Interpretation

General biodegradability

Soil degradation (days) (aerobic)

DT₅₀ (typical)

71.8

Moderately persistent

DT₅₀ (lab at 20 °C)

71.8

Moderately persistent

DT₅₀ (field)

35.2

Moderately persistent

DT₉₀ (lab at 20 °C)

344.8

Persistent

DT₉₀ (field)

478

DT₅₀ modelling endpoint

Note

EU 2016 dossier lab studies DT₅₀ range 26.6-115 days, DT₉₀ range 107-1000 days, Soils=12; field studies DT₅₀ range 15.3-96.3 days, DT₉₀ range 108-525 days, Soils=6

Dissipation rate RL₅₀ (days) on plant matrix

Value

6.4

Note

Published literature RL₅₀ range 4.6-8.2 days, 2 field crops, various matrices, n=2

Dissipation rate RL₅₀ (days) on and in plant matrix

Value

7.4

Note

Published literature RL₅₀ range 1.0-16.9 days, 7 field crops, various matrices, n=10

Aqueous photolysis DT₅₀ (days) at pH 7

Value

Stable

Note

Not a significant degradation route

Aqueous hydrolysis DT₅₀ (days) at 20 °C and pH 7

Value

53.5

Moderately persistent

Note

Water-sediment DT₅₀ (days)

561

Stable

Water phase only DT₅₀ (days)

Moderately fast

Sediment phase only DT₅₀ (days)

Air degradation

As this parameter is not normally measured directly, a surrogate measure is used: ‘Photochemical oxidative DT₅₀’. Where data is available, this can be found in the Fate Indices section below.

Decay in stored produce DT₅₀

[Malt: 325 days @ 20-22 DegC, dark conditions; Field study]

Soil adsorption and mobility

Property

Value

Source; quality score; and other information

Interpretation

Linear

K_d (mL g⁻¹)

33.7

Slightly mobile

K_oc (mL g⁻¹)

1086

Notes and range

EU 2003 dossier K_oc range 382-1789, Soils=9

Freundlich

K_f (mL g⁻¹)

15.0

Slightly mobile

K_foc (mL g⁻¹)

955

¹/_n

0.86

Notes and range

EU 2016 dossier: K_f range 1.20-59.0 mL g⁻¹, K_foc range 387-1817 mL g⁻¹, ¹/_n range 0.81-0.89, Soils=9; Literature data: K_f range 27-1277 mL g⁻¹, K_foc range 1440-3387 mL g⁻¹, ¹/_n range 0.75-0.88, Soils=3 (R4)

pH sensitivity

Fate indices

Property

Value

Source; quality score; and other information

Interpretation

GUS leaching potential index

1.58

Calculated

Low leachability

SCI-GROW groundwater index (μg l⁻¹) for a 1 kg ha⁻¹ or 1 l ha⁻¹ application rate

Value

4.25 X 10^-02

Calculated

Note

Potential for particle bound transport index

Medium

Calculated

Potential for loss via drain flow

Slightly mobile

Calculated

Photochemical oxidative DT₅₀ (hrs) as indicator of long-range air transport risk

11.1

Calculated using the Atkinson method. Assumed 1.5E+06 OH/cm³, 12 hr

Below the level of concern for long-range air transport

Bio-concentration factor

BCF (l kg⁻¹)

116

Whole fish

Threshold for concern

CT₅₀ (days)

Known soil metabolites

Metabolite

Major/Minor fraction

$Click here for further information on Major/Minor fraction$

Estimated maximum occurrence fraction

Notes

1,2,4-triazole (Ref: CGA 71019)

Major fraction

0.430

(2S,4S-2R,4R)-2-(2,4-dichlorophenyl)-2-(1H-1,2,4-triazol-1-ylmethyl)-1,3-dioxolane-4-carboxylic acid (Ref: SYN 547889)

Major fraction

0.154

1H-1,2,4-triazole-1-ethanol, alpha-(2,4-dichlorophenyl)- 2-(1,2,4) triazol-1-yl-ethanol (Ref: CGA 91305)

Minor fraction

0.08

(2S,4R)-2-(2,4-dichlorophenyl)-2-(1H-1,2,4-triazol-1-ylmethyl)-1,3-dioxolane-4-carboxylic acid (Ref: NOA 436613)

Major fractio

0.123

Known groundwater metabolites

Metabolite

EC SANCO/221/2000 relevancy

ADI (mg kg⁻¹ bodyweight day⁻¹)

WHO drinking water guidance value (μg L⁻¹ day⁻¹)

(2S,4S-2R,4R)-2-(2,4-dichlorophenyl)-2-(1H-1,2,4-triazol-1-ylmethyl)-1,3-dioxolane-4-carboxylic acid (Ref: SYN 547889)

Relevant

(2S,4R)-2-(2,4-dichlorophenyl)-2-(1H-1,2,4-triazol-1-ylmethyl)-1,3-dioxolane-4-carboxylic acid (Ref: NOA 436613)

Relevant

Other known metabolites

Metabolite name and reference

Aliases

Formation medium / Rate

Estimated maximum occurrence fraction

1,3-dioxolane-4-ethanol, 2-(2,4-dichlorophenyl)-á-methyl-2-(1H-1,2,4-triazol-1-ylmethyl)-
Note: CAS Number 104390-57-0

CGA118244; CSAA107724

Plant; Rat; Livestock

3-[2-(2,4-dichlorophenyl)-2-[1,2,4]triazol-1-ylmethyl-[1,3]dioxolan-4-yl]-2-hydroxy-propionic acid

SYN542636

Lactating goat

3-[2-(2,4-dichlorophenyl)-2-[1,2,4]triazol-1-yl-methyl-[1,3]dioxolan-4-yl]-propan-1-ol

CGA118245

Wheat; Lactating goat

2-(2,4-dichlorophenyl)-á-ethyl-2-(1H-1,2,4-riazol-1-yl-methyl)-1,3-dioxolane-4-methanol
Note: CAS Number:119725-85-8

CGA136735

Plant

3-chloro-4-(4-propyl-2-[1,2,4]triazol-1-ylmethyl-[1,3]dioxolan-2-yl)-phenol

GB-XLIII-42-1

Plant

ECOTOXICOLOGY

Terrestrial ecotoxicology

Property

Value

Source; quality score; and other information

Interpretation

Mammals - Acute oral LD₅₀ (mg kg⁻¹)

550

Rat

Moderate

Mammals - Short term dietary NOEL

(mg kg⁻¹)

2.7

Mice

High

(ppm diet)

Mammals - Chronic 21d NOAEL (mg kg⁻¹ bw d⁻¹)

43.7

Rat Reproductive NOAEL

Moderate

Birds - Acute LD₅₀ (mg kg⁻¹)

> 2510

Anas platyrhynchos

Low

Birds - Short term dietary (LC₅₀/LD₅₀)

> 5620 mg kg feed⁻¹

Anas platyrhynchos

Birds - Chronic 21d NOEL (mg kg⁻¹ bw d⁻¹)

25.5

Anas platyrhynchos NOAEL

Moderate

Earthworms - Acute 14 day LC₅₀ (mg kg⁻¹)

686

Eisenia foetida

Moderate

Earthworms - Chronic NOEC, reproduction (mg kg⁻¹)

6.47

Eisenia foetida

Moderate

Soil micro-organisms

Nitrogen mineralisation: No significant adverse effect
Carbon mineralisation: No significant adverse effect

Dose: 6.7 mg kg⁻¹ soil 28 Day

Collembola

Acute LC₅₀ (mg kg⁻¹)

Chronic NOEC (mg kg⁻¹)

25.4

Folsomia candida

Non-target plants

Vegetative vigour ER₅₀ (g ha⁻¹)

> 125

6 plant species tested

Seedling emergence ER₅₀ (g ha⁻¹)

> 125

6 plant species tested

Honeybees (Apis spp.)

Contact acute LD₅₀ (worst case from 24, 48 and 72 hour values - μg bee⁻¹)

> 100

Apis mellifera

Low

Oral acute LD₅₀ (worst case from 24, 48 and 72 hour values - μg bee⁻¹)

> 100

Apis mellifera

Low

Unknown mode acute LD₅₀ (worst case from 24, 48 and 72 hour values - μg bee⁻¹)

Chronic as 10-day LC₅₀ µg bee⁻¹ day⁻¹

70.4

Apis mellifera

Notes

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)

33.3

Osmia lignaria

Moderate

Other bee species (1)

Acute LD₅₀ (worst case from 24, 48 and 72 hour values - μg insect⁻¹)

Mode of exposure

Other bee species (2)

Acute LD₅₀ (worst case from 24, 48 and 72 hour values - μg insect⁻¹)

Mode of exposure

Beneficial insects (Ladybirds) as Mortality LR₅₀ g ha⁻¹, Std lab test

125

Coccinella septempunctata

Low

Beneficial insects (Lacewings) as Mortality LD₅₀ g ha⁻¹, Std lab test

> 250

Chrysoperla carnea

Low

Beneficial insects (Parasitic wasps) as Mortality LD₅₀ g ha⁻¹, Std lab test

> 250

Aphidius rhopalosiphi

Low

Beneficial insects (Predatory mites) as Mortality LD₅₀ g ha⁻¹, Std lab test

18.8

Typhlodromus pyri

Moderate

Beneficial insects (Ground beetles) as Mortality LR₅₀ g ha⁻¹, Std lab test

> 250

Poecilus cupreus

Low

Aquatic ecotoxicology

Property

Value

Source; quality score; and other information

Interpretation

Temperate Freshwater Fish - Acute 96 hour LC₅₀ (mg l⁻¹)

2.6

Leiostomus xanthurus

Moderate

Temperate Freshwater Fish - Chronic 21 day NOEC (mg l⁻¹)

0.068

Oncorhynchus mykiss

Moderate

Tropical Freshwater Fish - Acute 96 hour LC₅₀ (mg l⁻¹)

> 5.16

Danio rerio Embryo

Moderate

Temperate Freshwater Aquatic invertebrates - Acute 48 hour EC₅₀ (mg l⁻¹)

10.2

Daphnia magna

Moderate

Temperate Freshwater Aquatic invertebrates - Chronic 21 day NOEC (mg l⁻¹)

0.31

Daphnia magna

Moderate

Tropical Freshwater Aquatic invertebrates - Acute 48 hour EC₅₀ (mg l⁻¹)

Aquatic crustaceans - Acute 96 hour LC₅₀ (mg l⁻¹)

0.37

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)

4.0

Chironomus riparius

Moderate

Sediment dwelling organisms - Chronic 28 day NOEC, sediment (mg kg⁻¹)

25.0

Chironomus riparius

Moderate

Aquatic Plants (free-floating, fonds growth, fresh) - 7 day (mg l⁻¹) (EC₅₀)

4.9

Lemna gibba

Moderate

Aquatic plants (rooted, growth rate, fresh) - 14 day (mg l⁻¹) (ErC₅₀)

0.55

Myriophyllum aquaticum

Moderate

Algae - Acute (growth rate, fresh; mg l⁻¹) (72 hr ErC₅₀, Static)

9.0

Raphidocelis subcapitata

Moderate

Algae - Chronic (growth rate, fresh; mg l⁻¹) (72 hr NOEC, Static)

0.46

Raphidocelis subcapitata

Moderate

Mesocosm study data

NOEAEC mg l⁻¹

Marine bivalves

HUMAN HEALTH AND PROTECTION

General

Property

Value

Source; quality score; and other information

Interpretation

Threshold of Toxicological Concern (Cramer Class)

High (class III)

Mammals - Acute oral LD₅₀ (mg kg⁻¹)

550

Rat

Moderate

Mammals - Dermal LD₅₀ (mg kg⁻¹ body weight)

4000

Rat

Mammals - Inhalation LC₅₀ (mg l⁻¹)

> 5.8

Rat 4 hr (nose only)

Other Mammal toxicity endpoints

ADI - Acceptable Daily Intake (mg kg⁻¹ bw day⁻¹)

0.04

ARfD - Acute Reference Dose (mg kg⁻¹ bw day⁻¹)

0.1

AAOEL - Acute Acceptable Operator Exposure Level (mg kg⁻¹ bw day⁻¹)

AOEL - Acceptable Operator Exposure Level - Systemic (mg kg⁻¹ bw day⁻¹)

0.1

Dermal penetration studies (%)

0.9-2.4

concentration dependent

Dangerous Substances Directive 76/464

Exposure Routes

Public

No unacceptable risks to bystanders identified

Occupational

No unacceptable risks to operators or other workers identified

MRLs

European

EU MRL pesticide database

Great Britain

GB MRL Register

Notes

New GB MRL in place from 24 April 2023

Drinking Water Standards

Drinking Water MAC (μg l⁻¹)

Mammalian dose elimination route and rate

Health issues

Specific human health issues

Carcinogen

Genotoxic

Endocrine disruptor

; ; ; ;

Reproduction / development effects

Acetyl cholinesterase inhibitor

Neurotoxicant

No data found

Respiratory tract irritant

Skin irritant

Skin sensitiser

Eye irritant

Phototoxicant

No data found

General human health issues

US EPA - possible human carcinogen, EU - unlikely to pose a hazard to humans
Possible liver toxicant
Endocrine issues - Weak estrogen and aromatase activity inhibition

Handling issues

Property

Value and interpretation

General

Not explosive or oxidising
IMDG Transport Hazard Class 9
Not expected to auto-ignite; Not highly flammable

CLP classification 2013

Health: H302, H317, H360D
Environment: H400, H410

WHO Classification

II (Moderately hazardous)

UN Number

UN3082

Waste disposal & packaging

Packaging Group III (minor danger)

Shelf-life, storage, stability and reactivity

TRANSLATIONS

Language

Name

English

propiconazole

French

propiconazol

German

Propiconazol

Danish

propiconazol

Italian

propiconazolo

Spanish

propiconazol

Greek

Polish

propikonazol

Swedish

propikonazol

Hungarian

propikonazol

Dutch

propiconazool

Norwegian

Record last updated:	17/08/2025
Contact:	aeru@herts.ac.uk
Please cite as:	Lewis, K.A., Tzilivakis, J., Warner, D. and Green, A. (2016) An international database for pesticide risk assessments and management. Human and Ecological Risk Assessment: An International Journal, 22(4), 1050-1064. DOI: 10.1080/10807039.2015.1133242