High Strength Concrete Mix

SECTION 2: Hazards identification

Potential health effects

NOTE may vary depending upon the duration and degree of exposure. To reduce or eliminate health hazards associated with this product use exposure controls or MSDS C-1 Page 2 of 6 personal protection methods as described in Section 12, (Acute/Chromic) Exposure to aitborne dust may cause immediate — EYE CONTACT: delayed irritation or inflammation of the cornea. Eye contact by or larger amounts of dry powder or splashes of wet material may cause effects ranging from moderate eye irritation to chemical burns and blindness. Expostire may cause drying of the skin with consequent SKIN CONTACT: (Acute) mild irritation or more significant effects attributable to aggravation of other conditions. Discomfort or pain cannot be relicd upon to alert a person to a hazardous skin exposure. (Chronic) Dry material coming in contact with wet skin or exposure to wet material may cause more severe skin effects, including thickening, cracking or fissuring of the skin. Prolonged exposure can cause severe skin damage in the form of chemical (caustic) bums, (Acute/Chronic) Some individuals may exhibit an allergic response upon exposure. The response may appear in a variety of forms ranging from a mild rash to severe skin ulcers. INHALATION (Acute) Exposure may cause irritation to the moist mucous membranes of the nose, throat and upper respiratory system. Pre- existing upper respiratory and lung diseases may be aggravated by inhalation. (Chronic) Inhalation exposure to free crystalline silica may cause delayed hing injury including silicosis, a disabling and potentially fatal lung disease, and/or cause or aggravate other lung diseases or conditions. INGESTION (Acute/Chronic) Internal discomfort or ill effects are possible if large quantities are swallowed, CARCINOGENIC POTENTIAL

Appearance/Odor

= Gray, odorless STATE: Solid (Powder mixed with sand PHYSICAL and rock.) BOILING POINT: > 1000°C POINT: > 1000°C MELTING VAPOR PRESSURE: Not applicable Not applicable VAPOR DENSITY: pEI (IN WATER) 12 to 13 (ASTM D 1293-95) SOLUBILITY IN WATER: Slightly soluble (0,1% to 1.0%) SPECIFIC GRAVITY =. 2.5+2.8 (H,0 = 1.0) None EVAPORATION RATE: 8. FIRE AND EXPLOSION FLASH POINT: None EXPLOSIVE LIMIT: None LOWER AUTO IGNITION Not combustible TEMPERATURE UPPER EXPLOSIVE LIMIT: None None