Poisonous; capable of causing injury or death. Among toxic art materials are many solvents and adhesives; the paints flake white (white lead), whose dry pigment should POISONOUS!never be handled, and Naples yellow. If a material is toxic, the nature of this concern should be described on its Material Safety Data Sheet (MSDS). Whenever a person has been exposed to such hazardous substances immediately get medical assistance. The study of toxicity is called toxicology.See a questionable expert's advice to artists about diet and exercise.Also see ASTM International (American Society for Testing and Materials), caustic, cleaning art, clean up, flammable, solvent, toluene, volatile, and xylene.