A vivid green toxic crystalline salt of copper and arsenic, used as a preservative, pigment, and insecticide.
- Beautifully named chemicals like Paris green (copper acetoarsenite), calomel (mercurous chloride), and realgar (arsenic sulfide), proved to be hazardous to the pyrotechnician's health.
- In the past, farmers have used toxic chemicals such as calcium arsenate, Paris green, dichlorodiphenyltrichloroethane, and toxaphene to rid their cotton crops of insects.
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