Anhydrous ammonia – used in manufacturing, refrigeration and agriculture – is a pungent, colorless and toxic gas or liquid that, when concentrated, is corrosive to human tissue upon contact, according to NIOSH.
Breathing problems. Itchy skin, rashes and burns. Irritated eyes. For some workers, including maintenance workers, janitors and housekeepers, these symptoms may have a common factor: cleaning products.
Toluene – often used in paint, metal cleaners and adhesives – is a clear, colorless liquid that vaporizes when exposed to air at room temperature. According to OSHA, it also has a sharp and sweet smell, which is a sign of exposure.