Chlorothalonil

CAS Number: 1897-45-6

SERIOUS
health hazard

MODERATE
health hazard

FEW OR NO
health hazards

0 79

80 89

90 100

Sources of exposure:

Food

Industrial use

Agricultural fungicide: lawns and golf courses; treated plants; paints and building materials; contaminated water

Description:

Chlorothalonil is a broad-spectrum fungicide and antimicrobial agent. It is used in the United States on food crops, turf, and ornamental plants and as a mildewcide in materials such as paints, adhesives, plaster, lumber, and other building products. Its approval for use in plant-protection products was not renewed in the European Union because of concerns including groundwater contamination, possible genotoxicity, and risks to aquatic organisms.

Health concerns:

Cancer

Known or suspected to increase cancer risk in humans.

Organ System Toxicity

May cause organ damage and disease.

Immunotoxicity & Allergens

May impact immune system function or cause allergic reactions.

Irritant

May cause skin, eye, or respiratory irritation.

Ecotoxicity

May be toxic to ecosystems and wildlife.

Banned/restricted lists:

PAN International Highly Hazardous Pesticides (HHP) List

References

California Department of Public Health. California Safe Cosmetics Reportable Ingredients List. US National Library of Medicine. PubChem database.

HOW MILLION MARKER SCORES CHEMICALS

Million Marker's Ingredient Hazard Scoring uses multiple chemical databases and a science-backed scoring system to compute hazard scores for thousands of chemicals found in consumer products and listed on ingredient labels.

We identified key chemicals based on a database compiling dozens of authoritative sources, screening tools, and QSAR models.

Hazard scores within 11 different health categories (carcinogens, endocrine disruptors, reproductive toxicants, developmental toxicants, genotoxicity, neurotoxicity, organ system toxicity, immunotoxicity, respiratory toxicity, skin/eye/respiratory irritants, and ecotoxicity).

They are weighted based on several factors, including strength of evidence for adverse impacts in humans, severity, and potential contamination.