Skip to main content
CosIng Checker
CosIng Checker
EU cosmetic ingredients, restrictions and safety
Login
Annex II Entry 1748 18/06/2025

difenoconazole (ISO); 1-({2-[2-chloro-4-(4-chlorophenoxy)phenyl]-4-methyl-1,3-dioxolan-2-yl}methyl)-1H-1,2,4-triazole; 3-chloro-4-[(2RS,4RS;2RS,4SR)-4-methyl-2-(1H-1,2,4-triazol-1-ylmethyl)-1,3-dioxolan-2-yl]phenyl 4-chlorophenyl ether

difenoconazole (ISO); 1-({2-[2-chloro-4-(4-chlorophenoxy)phenyl]-4-methyl-1,3-dioxolan-2-yl}methyl)-1H-1,2,4-triazole; 3-chloro-4-[(2RS,4RS;2RS,4SR)-4-methyl-2-(1H-1,2,4-triazol-1-ylmethyl)-1,3-dioxolan-2-yl]phenyl 4-chlorophenyl ether is listed in Annex II as a prohibited substance for cosmetic products placed on the EU market.

Search similar Back to annex Compare
Prohibited substance— Annex II, EU Regulation 1223/2009
Entry: 1748

Chemical identity and properties

PubChem 2D chemical structure for CAS 119446-68-3
CAS 119446-68-3PubChem CID 86173

Difenoconazole

Difenoconazole is a member of the class of dioxolanes that is 1,3-dioxolane substituted at position 2 by 2-chloro-4-(4-chlorophenoxy)phenyl and 1,2,4-triazol-1-ylmethyl groups. A broad spectrum fungicide with novel broad-range activity used as a spray or seed treatment. It is moderately toxic to humans, mammals, birds and most aquatic organisms. It has a role as a xenobiotic, an EC 1.14.13.70 (sterol 14alpha-demethylase) inhibitor, an environmental contaminant and an antifungal agrochemical. It is an aromatic ether, a member of triazoles, a dioxolane, a cyclic ketal, a conazole fungicide and a triazole fungicide. — ChEBI

IUPAC name
1-[[2-[2-chloro-4-(4-chlorophenoxy)phenyl]-4-methyl-1,3-dioxolan-2-yl]methyl]-1,2,4-triazole
Molecular formula
C19H17Cl2N3O3
Molecular weight
406.3 g/mol
Exact mass
405.0646968 Da
XLogP3
4.0
Topological polar surface area
58.4 Ų
Hydrogen-bond donors
0
Hydrogen-bond acceptors
5
Covalent units
1
Defined stereocentres
0

Also known as

ScoreBardos NeuDividendPlover1-((2-(2-Chloro-4-(4-chlorophenoxy)phenyl)-4-methyl-1,3-dioxolan-2-yl)methyl)-1H-1,2,4-triazoleScore EC 250CGA 1693741H-1,2,4-Triazole, 1-[[2-[2-chloro-4-(4-chlorophenoxy)phenyl]-4-methyl-1,3-dioxolan-2-yl]methyl]-
16 more reported names
1-({2-[2-chloro-4-(4-chlorophenoxy)phenyl]-4-methyl-1,3-dioxolan-2-yl}methyl)-1H-1,2,4-triazole1-[[2-[2-chloro-4-(4-chlorophenoxy)phenyl]-4-methyl-1,3-dioxolan-2-yl]methyl]-1h-1,2,4-triazoleD9612XCH4P1H-1,2,4-Triazole, 1-((2-(2-chloro-4-(4-chlorophenoxy)phenyl)-4-methyl-1,3-dioxolan-2-yl)methyl)-DifenoconazolCHEBI:817601h-1,2,4-triazole,1-((2-(2-chloro-4(4-chlorophenoxy)phenyl)-4-methyl-1,3-dioxolan-2-yl)methyl)-PLANDOMSPECTRORefChem:5752CGA-169374C19H17Cl2N3O3DifenconazoleDividend (fungicide)Difenoconazole [ISO]UNII-D9612XCH4P
Open full PubChem recordPubChem annotations3D structure image
External database identifiers

Evidence from additional scientific databases

NIH PubChem PUG-View
Exact identifier match86173

Attributed physical-property, hazard, environmental and use annotations.

  • Signal: Warning Source: Regulation (EC) No 1272/2008 of the European Parliament and of the Council
  • GHS Hazard Statements: H302: Harmful if swallowed [Warning Acute toxicity, oral]; H319: Causes serious eye irritation [Warning Serious eye damage/eye irritation]; H351: Suspected of causing cancer [Warning Carcinogenicity]; H400: Very toxic to aquatic life [Warning Hazardous to the aquatic environment, acute hazard]; H410: Very toxic to aquatic life with long lasting effects [Warning Hazardous to the aquatic environment, long-term hazard] Source: Regulation (EC) No 1272/2008 of the European Parliament and of the Council
  • Precautionary Statement Codes: P203, P264, P264+P265, P270, P273, P280, P301+P317, P305+P351+P338, P318, P330, P337+P317, P391, P405, and P501 (click each P-code to see the statement) Source: Regulation (EC) No 1272/2008 of the European Parliament and of the Council
  • Signal: Warning Source: European Chemicals Agency (ECHA)
  • GHS Hazard Statements: H302+H332 (29.5%): Harmful if swallowed or if inhaled [Warning Acute toxicity, oral; acute toxicity, inhalation]; H302 (100%): Harmful if swallowed [Warning Acute toxicity, oral]; H319 (52.7%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]; H332 (31%): Harmful if inhaled [Warning Acute toxicity, inhalation]; H400 (96.9%): Very toxic to aquatic life [Warning Hazardous to the aquatic environment, acute hazard]; H410 (96.9%): Very toxic to aquatic life with long lasting effects [Warning Hazardous to the aquatic environment, long-term hazard] Source: European Chemicals Agency (ECHA)
  • Precautionary Statement Codes: P261, P264, P264+P265, P270, P271, P273, P280, P301+P317, P304+P340, P305+P351+P338, P317, P330, P337+P317, P391, and P501 (click each P-code to see the statement) Source: European Chemicals Agency (ECHA)
  • ECHA C&L Notifications Summary: Aggregated GHS information provided per 129 reports by companies from 16 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.; Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website. Source: European Chemicals Agency (ECHA)
  • Signal: Warning Source: NITE-CMC
  • GHS Hazard Statements: H302: Harmful if swallowed [Warning Acute toxicity, oral]; H320: Causes eye irritation [Warning Serious eye damage/eye irritation]; H351: Suspected of causing cancer [Warning Carcinogenicity]; H371: May cause damage to organs [Warning Specific target organ toxicity, single exposure]; H373: May causes damage to organs through prolonged or repeated exposure [Warning Specific target organ toxicity, repeated exposure]; H400: Very toxic to aquatic life [Warning Hazardous to the aquatic environment, acute hazard]; H410: Very toxic to aquatic life with long lasting effects [Warning Hazardous to the aquatic environment, long-term hazard] Source: NITE-CMC
  • Precautionary Statement Codes: P203, P260, P264, P264+P265, P270, P273, P280, P301+P317, P305+P351+P338, P308+P316, P318, P319, P330, P337+P317, P391, P405, and P501 (click each P-code to see the statement) Source: NITE-CMC
  • GHS Hazard Statements: H302: Harmful if swallowed [Warning Acute toxicity, oral]; H320: Causes eye irritation [Warning Serious eye damage/eye irritation]; H332: Harmful if inhaled [Warning Acute toxicity, inhalation] Source: NITE-CMC
  • Precautionary Statement Codes: P261, P264, P264+P265, P270, P271, P301+P317, P304+P340, P305+P351+P338, P317, P330, P337+P317, and P501 (click each P-code to see the statement) Source: NITE-CMC
  • Toxicity Summary: IDENTIFICATION AND USE: Difenoconazole is a white crystalline solid. It is used as fungicide, insecticide, seed treatment/protectant. HUMAN EXPOSURE AND TOXICITY: Harmful if inhaled or absorbed through skin. Causes moderate eye irritation. It did not cause chromosomal aberrations in human lymphocytes. One case of allergic reaction to a formulated product was reported. ANIMAL STUDIES: Difenoconazole was moderately and transiently irritating to the eyes of rabbits. It was very slightly and transiently irritating to the skin of rabbits. Difenoconazole was considered to be essentially non-toxic when applied topically under occlusion to intact rabbit skin. In rats treated dermally for 28 days there was an increased incidence of minimal centrilobular hepatocellular hypertrophy in males and females at 1000 mg/kg bw. In the thyroid, the incidence of minimal to moderate severity grades of hypertrophy of the follicular epithelium was slightly increased in the group of rats at 1000 mg/kg bw. The liver appeared to be the target organ for toxicity. There was no evidence for carcinogenicity or oncogenicity in rats. There were no indications of embryotoxicity, fetotoxicity or teratogenicity at a Source: Hazardous Substances Data Bank (HSDB)
  • Environmental Bioconcentration: Following an EPA guideline study, a whole body BCF of 330 was reported for difenoconazole in bluegill fish (Lepomic macrochirus) exposed for 28 days(1), this BCF suggests that bioconcentration in aquatic organisms is high(SRC). Source: Hazardous Substances Data Bank (HSDB)
  • Environmental Fate: TERRESTRIAL FATE: Based on a classification scheme(1), reported Koc values ranging from 3200 to 7734(2,3) indicate that difenoconazole is expected to be slightly mobile to immobile in soil(SRC). Volatilization of difenoconazole from moist soil surfaces is not expected to be an important fate process(SRC) given an estimated Henry's Law constant of 8.9X10-12 atm-cu m/mole(SRC), based upon its vapor pressure, 2.5X10-10 mm Hg(4), and water solubility, 15 mg/L(4). Difenoconazole is not expected to volatilize from dry soil surfaces(SRC) based upon its vapor pressure(4). Slow biodegradation of difenoconazole may occur under certain conditions; however, may be limited by its bioavailability(4,5). Source: Hazardous Substances Data Bank (HSDB)
  • Environmental Fate: AQUATIC FATE: Based on a classification scheme(1), reported Koc values ranging from 3200 to 7734(2,3) indicate that difenoconazole is not expected to adsorb to suspended solids and sediment(SRC). Volatilization from water surfaces is not expected(4) based upon an estimated Henry's Law constant of 8.9X10-12 atm-cu m/mole(SRC) derived from its vapor pressure, 2.5X10-10 mm Hg(5), and water solubility, 15 mg/L(5). According to a classification scheme(6), a BCF of 330(7), suggests that bioconcentration in aquatic organisms is high(SRC). Slow biodegradation of difenoconazole may occur under certain conditions; however, may be limited by its bioavailability(5,8). Source: Hazardous Substances Data Bank (HSDB)
  • Environmental Fate: ATMOSPHERIC FATE: According to a model of gas/particle partitioning of semivolatile organic compounds in the atmosphere(1), difenoconazole, which has a vapor pressure of 2.5X10-10 mm Hg at 25 °C(2), is expected to exist solely in the particulate phase in the ambient atmosphere. Particulate-phase difenoconazole may be removed from the air by wet and dry deposition(SRC). Difenoconazole contains chromophores that absorb at wavelengths >290 nm(3) and, therefore, may be susceptible to direct photolysis by sunlight(SRC). Source: Hazardous Substances Data Bank (HSDB)
  • Uses: For difenoconazole (USEPA/OPP Pesticide Code: 128847) ACTIVE products with label matches. /SRP: Registered for use in the USA but approved pesticide uses may change periodically and so federal, state and local authorities must be consulted for currently approved uses./[ Source: Hazardous Substances Data Bank (HSDB)
  • Uses: Difenoconazole... is a systemic triazole fungicide that controls a broad spectrum of foliar, seed and soil-borne diseases caused by Ascomycetes, Basidiomycetes and Deuteromycetes in cereals, soya, rice, grapes, pome fruit, stone fruit, potatoes, sugar beet and several vegetable and ornamental crops. Source: Hazardous Substances Data Bank (HSDB)
  • Uses: Fungicide, insecticide, seed treatment/protectant. Source: Hazardous Substances Data Bank (HSDB)
  • Uses: This is a man-made compound that is used as a pesticide. Source: Toxin and Toxin Target Database (T3DB)

Mapped by: Existing checksum-valid CAS to unique PubChem CID match. Retrieved: 2026-08-31. Open source record

Scientific classifications and hazard annotations provide context and do not replace the market-specific regulatory decision shown above.

Additional source coverage and match status
SourceResultChecked
NIH PubChem PUG-ViewExact match2026-08-31

A recorded no-match is useful evidence that the source was checked; it is not a claim that the substance does not exist elsewhere.

Retrieved from NIH PubChem on 2026-09-02 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Record details

Chemical name

difenoconazole (ISO); 1-({2-[2-chloro-4-(4-chlorophenoxy)phenyl]-4-methyl-1,3-dioxolan-2-yl}methyl)-1H-1,2,4-triazole; 3-chloro-4-[(2RS,4RS;2RS,4SR)-4-methyl-2-(1H-1,2,4-triazol-1-ylmethyl)-1,3-dioxolan-2-yl]phenyl 4-chlorophenyl ether

Regulatory information

Regulation

(EU) 2025/877

See every entry this act set

Key data

CAS
119446-68-3
EC
—
Annex
II
Entry number
1748

Direct matches are limited for this record, so nearby entries from Annex II are shown as well.

Annex II 1754
Nearby record in the same annex

Acetone oxime

CAS: 127-06-0
EC: 204-820-1

What Annex II means for difenoconazole (ISO); 1-({2-[2-chloro-4-(4-chlorophenoxy)phenyl]-4-methyl-1,3-dioxolan-2-yl}methyl)-1H-1,2,4-triazole; 3-chloro-4-[(2RS,4RS;2RS,4SR)-4-methyl-2-(1H-1,2,4-triazol-1-ylmethyl)-1,3-dioxolan-2-yl]phenyl 4-chlorophenyl ether

difenoconazole (ISO); 1-({2-[2-chloro-4-(4-chlorophenoxy)phenyl]-4-methyl-1,3-dioxolan-2-yl}methyl)-1H-1,2,4-triazole; 3-chloro-4-[(2RS,4RS;2RS,4SR)-4-methyl-2-(1H-1,2,4-triazol-1-ylmethyl)-1,3-dioxolan-2-yl]phenyl 4-chlorophenyl ether is listed as a prohibited substance under Annex II of EU Cosmetics Regulation 1223/2009 and must not be intentionally added. Article 17 separately addresses unintended small quantities that are technically unavoidable under good manufacturing practice and compatible with the Article 3 safety requirement.

Formulators must screen their ingredients and raw materials to ensure none contain this substance. Suppliers should provide documentation confirming absence when requested.

The page also surfaces 12 related annex records with overlapping identifiers, annex logic or naming patterns.

Compliance checklist

  • Verify this substance is absent from all raw materials and finished formulations.
  • Request absence confirmation or CoA from raw material suppliers.
  • Document the screening result in the Product Information File (PIF).

Frequently asked questions

Yes. difenoconazole (ISO); 1-({2-[2-chloro-4-(4-chlorophenoxy)phenyl]-4-methyl-1,3-dioxolan-2-yl}methyl)-1H-1,2,4-triazole; 3-chloro-4-[(2RS,4RS;2RS,4SR)-4-methyl-2-(1H-1,2,4-triazol-1-ylmethyl)-1,3-dioxolan-2-yl]phenyl 4-chlorophenyl ether is listed in Annex II of EU Cosmetics Regulation 1223/2009 and is prohibited as an intentionally added cosmetic ingredient. Article 17 provides a narrow exception for unintended small quantities that are technically unavoidable under good manufacturing practice, provided the product remains safe under Article 3.

CAS 119446-68-3 is the unique numerical identifier assigned to difenoconazole (ISO); 1-({2-[2-chloro-4-(4-chlorophenoxy)phenyl]-4-methyl-1,3-dioxolan-2-yl}methyl)-1H-1,2,4-triazole; 3-chloro-4-[(2RS,4RS;2RS,4SR)-4-methyl-2-(1H-1,2,4-triazol-1-ylmethyl)-1,3-dioxolan-2-yl]phenyl 4-chlorophenyl ether by the Chemical Abstracts Service. In cosmetic compliance work, the CAS number is used to cross-reference the substance across regulatory databases, raw material specifications and safety assessment reports. Multiple EU annex entries may share the same CAS number if the same substance appears under different conditions or in different annexes.

Use the INCI Checker tool on this site to paste your full ingredient list (INCI) and scan it against all Annex II–VI entries. The tool highlights any ingredients that match restricted, prohibited or allergen-flagged records. This is useful for rapid compliance screening of finished product formulas or raw material declarations.
Open INCI Checker

Source note for Annex II record difenoconazole (ISO); 1-({2-[2-chloro-4-(4-chlorophenoxy)phenyl]-4-methyl-1,3-dioxolan-2-yl}methyl)-1H-1,2,4-triazole; 3-chloro-4-[(2RS,4RS;2RS,4SR)-4-methyl-2-(1H-1,2,4-triazol-1-ylmethyl)-1,3-dioxolan-2-yl]phenyl 4-chlorophenyl ether

This page summarizes one Annex II record for difenoconazole (ISO); 1-({2-[2-chloro-4-(4-chlorophenoxy)phenyl]-4-methyl-1,3-dioxolan-2-yl}methyl)-1H-1,2,4-triazole; 3-chloro-4-[(2RS,4RS;2RS,4SR)-4-methyl-2-(1H-1,2,4-triazol-1-ylmethyl)-1,3-dioxolan-2-yl]phenyl 4-chlorophenyl ether from public European Commission cosmetic materials and adds linked inventory or identifier matches when available.

Use this record page to review Annex II conditions for difenoconazole (ISO); 1-({2-[2-chloro-4-(4-chlorophenoxy)phenyl]-4-methyl-1,3-dioxolan-2-yl}methyl)-1H-1,2,4-triazole; 3-chloro-4-[(2RS,4RS;2RS,4SR)-4-methyl-2-(1H-1,2,4-triazol-1-ylmethyl)-1,3-dioxolan-2-yl]phenyl 4-chlorophenyl ether, but confirm any final regulatory decision against the current official annex wording and source files.

View sourcesView updates

Tools & next steps

Check your formula

Paste a full INCI list to detect difenoconazole (ISO); 1-({2-[2-chloro-4-(4-chlorophenoxy)phenyl]-4-methyl-1,3-dioxolan-2-yl}methyl)-1H-1,2,4-triazole; 3-chloro-4-[(2RS,4RS;2RS,4SR)-4-methyl-2-(1H-1,2,4-triazol-1-ylmethyl)-1,3-dioxolan-2-yl]phenyl 4-chlorophenyl ether and other flagged EU annex records in one pass.

INCI Checker

Compare entries

Compare difenoconazole (ISO); 1-({2-[2-chloro-4-(4-chlorophenoxy)phenyl]-4-methyl-1,3-dioxolan-2-yl}methyl)-1H-1,2,4-triazole; 3-chloro-4-[(2RS,4RS;2RS,4SR)-4-methyl-2-(1H-1,2,4-triazol-1-ylmethyl)-1,3-dioxolan-2-yl]phenyl 4-chlorophenyl ether side by side with another annex record to review differences in restrictions, concentrations and annex placement.

Compare

Browse the annex

See all records in Annex II and compare regulatory conditions across substances in this annex.

Open Annex II