A-101 Part A

SECTION 2: Hazards identification

EFFECTS OF SINGLE OVEREXPOSURE: SWALLOWING: Small amounts transferred to the mouth by fingers during use, etc., should not injure. Swallowing large amounts may cause digestive discomfort. SKIN ABSORPTION: No evidence of adverse effects from available information. INHALATION: Short term harmful health effects are not expected from vapor generated at ambient temperature. SKIN CONTACT: May cause skin irritation and reddening. EYE CONTACT: Direct contact may cause temporary discomfort with mild redness, swelling and irritation. A-101 A EFFECTS OF REPEATED OVEREXPOSURE: No injury from silica or dust should occur during reasonable use. If use creates respirable particles, some respiratory system injury may occur. However, since the silica in this product is compounded into the polymer matrix, it is not expected to present the same hazards as neat silica.

Medical Conditions Generally Aggravated by Exposure

OVEREXPOSURE A knowledge of the available toxicology information and of the physical and chemical properties of the material suggests that overexposure is unlikely to aggravate existing medical conditions. SIGNIFICANT LABORATORY DATA WITH POSSIBLE RELEVANCE TO HUMAN HEALTH HAZAPD EVALUATION: Diatomaceous earth may contain up to 75% crystalline silica, which is classified by the IARC as a class 2A carcinogen (probably carcinogenic to humans: limited human evidence sufficient evidence in experimental animals); and by the NTP as a class 2 carcinogen (reasonable anticipated to be a carcinogen: limited evidence from studies in humans or sufficient evidence from studies in experimental animals). The EPA has expressed concern regarding the possible adverse health effects resulting from the inhalation of alkoxylsilanes and has recommended that administrative and mechanical means be used to minimize exposures. n-Propanol (which is generated upon exposure to water and or moisture) has been demonstrated to be carcinogenic in lifetime exposure studies in rats when administered orally or subcutaneously. OTHER EFFECTS OF OVEREXPOSURE None currently known.