Silica Sol formulation

SECTION 2: Hazards identification

Emergency Overview Contains alkaline material. May cause irritation. Avoid contact with eyes, skin, and clothing.

Principle Routes of Exposure

Signs & Symptoms Single, Repeated, Severity (Mild, Acute and Target or Lifetime Moderate, Chronic Health Organ(s) Exposure Severe) Effect(s) Eye Irritation Skin May tend to dry out skin. Inhalation Ingestion Other

Medical Conditions Generally Aggravated by Exposure

None known Carcinogenicity (IARC, NTP) In the shipped form, this product was not evaluated by the IARC, not listed by NTP, and not regulated by OSHA. Although amorphous silica is not a carcinogen as purchased in this product, portions of it may convert to crystalline silica (cristobalite) when subjected to higher temperatures (e.g. 1700° F), such as when used in a mold for ferrous and other high temperature alloy castings. The exposure to crystalline silica is highest at the mold knockout stage of the casting process. The specifics on carcinogenicity of respirable crystalline silica follow: The exposure limits for respirable crystalline silica; specifically cristobalite, established by OSHA-PEL = 0.05 mg/m3. The IARC and NTP report the following on the carcinogenicity of respirable crystalline silica: The National Toxicology Program (NTP) published its Ninth Annual Report on Carcinogens which concludes that "silica, crystalline (respirable)" is known to be a human carcinogen. The NTP conclusion is based on experimental animals and limited evidence in humans. IARC Monograph Volume 68: Silica, silicates, coal dust, and para-aramid fibrils states that there is sufficient evidence in humans for the carcinogenicity of inhaled crystalline silica in the forms of quartz and cristobalite from occupational sources. Crystalline silica is categorized in the "Group 1" category which the IARC defines as the agent is carcinogenic to humans. For more detailed information on the effects of crystalline silica, contact the manufacturer.