Toxno Substance Profile
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Substance Name

Prochloraz
Identification Number: CASRN | 67747-09-5

  Substance Attributes


  • Known Human Carcinogen

    This is a serious nasty substance. Exposure to this substance leads to cancer in Humans. Exercise extreme caution with this substance, explore your exposure routes and very seriously consider complete avoidance. See further details under Toxins.

  • Metabolic Interference or Disruption

    Interferes with human metabolism. This can be a very serious thing. Some of these interference mechanics are well established. However, often long term effects and health consequences remain largely unknown. Additionally an emerging area of concern and one that is not currently studied, is the combined synergistic effects these metabolically disrupting chemicals have on human health.


    Metabolic interference happens when the substance produces highly reactive and often damaging intermediates during detoxification or when the substance binds to specific enzymes, important structural groups on molecules, receptors and membranes or targets DNA or mimics key nutrients.

  • Toxic to Wildlife

    May kill plants, fish, birds or other animals and insects or may be very toxic to aquatic life with long lasting effects. This then effects delicate environmental ecology and food supply in ways we don't fully understand yet.

These attributes are ONLY based on peer-reviewed evidence. See link to Data Sources below. Everyone benefits from knowing this stuff. Please Share.



  • CATEGORIES: Pesticide | Synthetic Toxin | PESTICIDE active ingredient | organic | fungicide | Pesticide or Plant Growth Regulator Approved in Australia | Pesticide approved or pending approval in EU | A Hazardous Substance that may be found in the Australian Workplace
  • SUBSTANCE LINEAGE: Organic Compounds | Benzenoids | Benzene and Substituted Derivatives | Phenol Ethers | Pyridinecarboxylic Acids
  • SYNONYMS: N-Propyl-N-[2-(2,4,6-trichlorophenoxy)ethyl]-1H-pyrazole-1-carboxamide
  • DESCRIPTION: Prochloraz is an imidazole fungicide that is widely used in Europe, Australia, Asia and South America for gardening and agriculture. It can be used alone or in combination with other agents in case of fungal infestation of cereals. It is frequently used in the seed dressing to prevent fungal diseases of many crops, including oilseed rape, sugar beet, vegetables, rice and coffee, as well as for the protection of citrus fruits during storage and transport. Screening studies have shown that prochloraz elicits multiple mechanisms of action in vitro, as it antagonizes the androgen and the oestrogen receptor, agonizes the Ah receptor and inhibits aromatase activity. In vivo prochloraz acts as an antiandrogen
  • COMMENTS: Residues of this pesticide are tested for on Australian Foods | Pesticide approved in Australia

    From Safe Work Australia and the Hazardous Substances Information System (HSIS) in Australia:

    Harmful if swallowed. Very toxic to aquatic life with long lasting effects | Environmental Hazard General Health Hazard | A Hazardous Substance that may be found in the Australian Workplace. Check with your employer or health and safety officer. Stay informed and become aware of the dangers that surround you. This chemical is included on the list of recognised hazardous chemicals from the Safe Work Australia - Hazardous Substances Information System (HSIS) that is based on the Globally Harmonised System of Classification and Labelling of Chemicals (GHS)

    Work Health and Safety (WHS) Regulations are the basis for hazardous chemicals regulations in Commonwealth, State and Territory jurisdictions in Australia. Under the model WHS Regulations, manufacturers and importers of substances, mixtures and articles supplied for use in workplaces are required to determine whether they are hazardous to health and safety before supply. The model WHS Regulations mandate that the hazards of a chemical as determined by the Globally Harmonised System of Classification and Labelling of Chemicals (GHS) must be included in safety data sheets and on labels. There are transitional arrangements in place for moving to the GHS-based system.

    The GHS Hazardous Chemical Information List contains chemicals classified by an authoritative source (such as the European Commission or NICNAS) in accordance with the Globally Harmonized System of Classification and Labelling of Chemicals (the GHS). This list contains the vast majority of chemicals currently in HSIS. This list and its detail are regularly updated by Work Safe Australia. The model Work Health and Safety (WHS) Regulations require chemicals to be classified in accordance with the Globally Harmonised System of Classification and Labelling of Chemicals (GHS). However transitional arrangements allow use of classification information in HSIS derived from the Approved Criteria until the 31 December 2016.
  • toxin chemical structure pubchem
  • FORMULA: C15H16Cl3N3O2
  • DATA SOURCES: DATA SOURCES: T3DB | PubChem | EPA_IRIS | Consolidated Pesticide Information Dataset (CPI) from the USA EPA | Compendium of Pesticide Common Names | APVMA | EU Pesticides | Safe Work Australia - Hazardous Substances Information System (HSIS)
  • LAST UPDATE: 28/04/2018

  Health Associations

Mostly focused on Health Implications of Long Term Exposure to this substance

  • SYMPTOMS:
  • POSSIBLE HEALTH CONSEQUENCES: Suspected endocrine disruptor (A15203). |
  • ACTION OF TOXIN: Prochloraz acts in vitro as a an aromatase inhibitor, aryl hydrocarbon receptor agonist, androgen receptor antagonist, and estrogen receptor antagonist. (A15203) |
  • TOXIN SITES OF ACTION IN CELL: "Membrane"
  • Additional Exposure Routes: Prochloraz is a non-systemic imidazole fungicide, an ergosterol biosynthesis inhibitor with contact and translaminar, protectant and eradicant activity. It is used in agriculture and horticulture against various plant diseases, especially Ascomycetes and Fungi Imperfecti. It is used to control foliar diseases of cereals (Pseudocercosporella, Pyrenophora, Rhynchosporium and Septoria spp.), field crops (such as Alternaria, Botrytis, Pyrenopeziza and Sclerotinia in oilseed rape, Ascochyta and Botrytis in legumes, Pyricularia in rice), fruit (blossom blight) and vegetables (anthracnose). (L2082)

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  Exposure Routes

These are the Exposure Routes we have so far for this substance. There are almost certainly more. We update this section regularly. The number of chemicals with 2 or more nastiness attributes in an exposure route is shown in orange. They grey badge shows the total amount of chemicals within the exposure route.


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