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Heptachlor

CAS Number: 76-44-8

SERIOUS
health hazard

MODERATE
health hazard

FEW OR NO
health hazards

0 79
80 89
90 100
37

Sources of exposure:

Food

Environmental pollution (water and soil), legacy contamination in older homes and buildings

Description:

Heptachlor is an organochlorine pesticide once used to control insects on crops and in buildings. It is classified as a Persistent Organic Pollutant (POP) under the Stockholm Convention. Its use is largely banned worldwide, with only limited exemptions remaining.

Health concerns:

Cancer

Known or suspected to increase cancer risk in humans.

Reproductive Toxicity

May alter hormone function and harm reproduction.

Developmental Toxicity

May impact fetal development and birth outcomes.

Neurotoxicity

May impact brain function or development.

Organ System Toxicity

May cause organ damage and disease.

Ecotoxicity

May be toxic to ecosystems and wildlife.

Banned/restricted lists:

  • Stockholm Convention on Persistent Organic Pollutants (POPs) Rotterdam Convention Prior Informed Consent Procedure for Certain Hazardous Chemicals and Pesticides in International Trade - Annex III

References

  1. US Environmental Protection Agency. Cheminformatics Modules, Computational Toxicology and Exposure Informatics (CompTox).
  2. California Department of Public Health. California Safe Cosmetics Reportable Ingredients List.
  3. UN Environment Programme. Stockholm Convention on Persistent Organic Pollutants (POPs).
  4. Available at https://chm.pops.int/TheConvention/ThePOPs/tabid/673/Default.aspx

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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.

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