MC-30, MC-70, MC-250, MC-800, MC-3000

SECTION 2: Hazards identification

Eye Hazards Contact with hot cutback asphalt can cause thermal burns to the eyes. Prolonged exposure to vapors, fumes, or mists may cause irritation, redness, and tearing. Skin Hazards Contact with hot cutback asphalt can cause thermal burns. Prolonged exposure to vapors, fumes, or mists may cause irritation and redness. Continued Ingestion Hazards Ingestion is not likely. Ingestion may cause thermal burns. If ingestion of molten material occurs, keep victim's head below their hips to prevent asphalt from reaching the lungs. Take the victim to obtain medical assistance immediately. Inhalation Hazards Breathing vapors, fumes, or mists may cause irritation to nasal and respiratory tract and central nervous system effects. Symptoms may include labored breathing, sore throat, coughing, wheezing, headache, and nausea. Some asphalts may contain sulfur compounds which may form Hydrogen Sulfide when heating. Hydrogen Sulfide is irritating to the eyes and respiratory tract at low concentrations. 0.02 ppm odor threshold 10 ppm eye irritation 100 ppm headache, dizziness, vomiting, coughing 200-300 ppm eye inflammation, respiratory tract irritation after 1 hour exposure 700-900 ppm rapid loss of consciousness; death can result. >1000 ppm unconsciousness in seconds; death in minutes unless victim is removed from contaminated area and breathing is restored. Do not depend on sense of smell for warning. Hydrogen Sulfide causes rapid olfactory fatigue (deadens sense of smell). There is no evidence that hydrogen sulfide will accumulate in body tissue after repeated exposure.