Fumes from this product may cause transitory irritation to eyes and upper respiratory passages. Carcinogenicity No data for this product as a whole. Chronic Toxicity Skin contact may result in temporary irritation. Due to product form, exposures to dusts or fumes is not expected to occur. This product contains crystalline silica and asphalt.
Crystalline silica is considered a hazard by inhalation.
Excessive exposure to crystalline silica can cause silicosis, a non-cancerous lung disease. Animal studies in which high concentrations of asphalt fumes were breathed for extended periods of time did not indicate any cancer effects. Bronchitis and pneumonitis were observed. Two studies where condensed fractions of certain asphalt fume condensates were repeatedly applied to the skin of laboratory animals reported the induction of skin cancers. This is not typical of any asphalt application.