Chemical Classifications (chemicals according to their structure, properties, or use)

Chemical classes are groupings that relate chemicals by similar features. Chemicals can be classified by their structure (e.g., hydrocarbons), uses (e.g., pesticides), physical properties (e.g., volatile organic compounds [VOCs]), radiological properties (e.g., radioactive materials), or other factors. The chemical classes identified below are ones used by the Agency for Toxic Substances and Disease Registry (ATSDR) to address hazardous substances.

Chemical Classification

• Benzidines/Aromatic amines

• Dioxins, Furans, PCBs (contain phenyl rings of carbon atoms)

• Halogenated pesticides and related compounds

• Hydrocarbons (contain hydrogen and carbon atoms)

• Inorganic substances

• Metals/Elements (the simplest forms of matter)

• Nitrosamines/ethers/alcohols

• Organophosphates and carbamates

• Pesticides (chemicals used for killing pests, such as rodents, insects, or plants)

• Phenols/phenoxy acids

• Phthalates

• Radionuclides (radioactive materials)

• Volatile organic compounds

• Warfare and Terrorism Agents (used in acts of war or terror)

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