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SECTION 2: Hazards identification

OSHA As defined in the

Principle Routes of Exposure

Occasional nuisance dust, Inhalation. SIGNS & SYMPTOMS OF EXPOSURE Eyes May cause irritation to the eyes. Skin May cause irritation to the skin. Ingestion This product is not intended to be ingested. If ingested, it may cause temporary irritation to the gastrointestinal (digestive) tract. Inhalation May cause irritation to the respiratory tract.

Acute Health Hazards

NIOSH has found that studies of workers exposed to asphalt fumes have repeatedly found irritation of the serous membranes of the conjunctivae (eye irritation) and the mucous membranes of the upper respiratory tract (nasal and throat irritation).

Health hazards

Studies in humans have found that exposure to respirable crystalline silica (quartz) can cause silicosis, a fibrosis (scarring) of the lungs. Silicosis is a serious and irreversible disease; it may be progressive even after exposure has ceased; it can lead to disability and death. IARC has determined that occupational exposure to oxidized CARCINOGENICITY: asphalt and its emissions is probably carcinogenic to humans (Group 2A). IARC has determined that respirable crystalline silica is carcinogenic to humans (Group 1), based on findings of sufficient evidence of carcinogenicity in both humans and experimental animals. NTP has classified respirable crystalline silica as a known human carcinogen based on sufficient evidence of carcinogenicity from studies in humans indicating a causal relationship between exposure to respirable crystalline silica and increased lung cancer rates in workers exposed to crystalline silica dust. NIOSH has determined that respirable crystalline silica is a potential occupational carcinogen.