To formulate a compliant solvent-based material, coating manufacturers must remove solvents, such as Xylene and Toluene, which are on the HAPS (hazardous air pollutant) list and VOC list. Acetone is not listed as a VOC and, therefore, is an exempt solvent that can be used to replace noncompliant solvents. Some areas in California require coating manufacturers to formulate finishes that contain less than 2.75 lbs. per gal. of VOC per gallon.
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