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(Excerpts from ART HARDWARE: The Definitive Guide to Artists’ Materials, by Steven Saitzyk © 1987) The polymer emulsion itself has hazards of its own that must be considered. Although most major manufacturers have replaced the highly toxic ethylene glycol (wet-edge agent) and toxic preservatives with less hazardous ones in their polymer emulsions, they cannot be considered safe. Some of the polymers evaporate with the water and can be inhaled. Although the amounts are not significant in most painting situations, there are many painters who still do stain painting and color field painting, which involve the use of large amounts of acrylics, and the artist stands directly over the drying paint without any protection. There are painters and small manufacturers making polymer paints who are not aware of the hazards involved in the manufacturing process and how they can be passed along to other users of their paints. For example, the raw acrylic polymer emulsion used in the manufacture of paint contains significant levels of highly toxic and volatile monomers that must be reduced or eliminated for safe use before handling. Not only can the vapors be hazardous, but mural painters should know about the experience of a well-known mural painter who was hospitalized for acrylic and heavy metal poisoning. She was working outdoors on a mural for the Olympics. The heat of the day apparently opened the pores of her skin, allowing a significant amount of acrylic polymer and pigment to be absorbed. Although polymer paints are not especially dangerous, they are not as safe as the prevailing opinion, and appropriate precautions are necessary.
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