American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 5 mg/m3 TWA, Inhalable Fraction and Vapor (see TLV Booklet); Appendix A5 - Not Suspected as a Human Carcinogen
National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 0.22 ppm, 1 mg/m3 TWA; 0.66 ppm, 3 mg/m3 STEL
Symptoms: Acute (short-term) exposure may result in irritation and burning of the eyes, nose, throat, and skin. Headaches, malaise, confusion, and nervous irritation after inhalation. Chronic (long-term) exposure may cause peeling of the hands and some eye, nose, and throat irritation.
Health Effects: Irritation-Eye, Nose, Throat, Skin---Moderate (HE15) CNS Effects (HE7)