单词	Paris green
释义	Paris green /ˈparɪs / noun [mass noun] 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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