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8.2 Respiratory Protection <br /> Avoid actions that caus st to become airborne. Use local or general ilation to control exposures below <br /> applicable exposure limits. Use NIOSH/MSHA-approved respirators in poony ventilated areas when dust causes <br /> discomfort or irritation, or where there is an applicable exposure limit(Advisory: Respirators and filters purchased <br /> after July 10, 1998 must be certified under 42 CFR 84). <br /> 8.3 Ventilation <br /> Use local exhaust or general dilution ventilation to control exposure below applicable limits. <br /> 8.4 Eve Protection <br /> When engaged in activities where cement dust or wet cement or concrete could contact the eye, wear safety glasses <br /> with side shields or goggles. In extremely dusty environments and unpredictable environments, wear unvented or <br /> indirectly vented goggles to avoid eye irritation or injury. Contact lenses should not be worn when working with <br /> Portland cement or fresh cement products. <br /> 9 PHYSICAL AND CHEMICAL PROPERTIES <br /> Appearance Gray or White powder <br /> Odor No distinct odor <br /> Physical state Solid(powder) <br /> pH(in water)(ASTM D 1293-95) 12 to 13 <br /> Solubility in water Slightly soluble(0.1 to 1.0%) <br /> Vapor pressure Not applicable <br /> Vapor density Not applicable <br /> Boiling point Not applicable(i.e.> 1000BC) <br /> Melting point Not applicable <br /> Specific gravity(1-120= 1.0) 3.15 <br /> Evaporation rate Not applicable <br /> VOC None <br /> 10 STABILITY AND REACTIVITY <br /> 10.1 Stability <br /> Stable when properly stored(dry).Contact with incompatible materials such as acids,ammonia salts or aluminum <br /> should be avoided as flammable hydrogen can be released. <br /> 10.2 Conditions to Avoid <br /> Unintentional contact with water. <br /> 10.3 Incomoatibility <br /> Wet Portland cement is alkaline.As such it is incompatible with acids,ammonium salts and aluminum metal. <br /> 10.4 Hazardous Decomposition <br /> Will not spontaneously occur.Adding water results in hydration and produces(caustic)calcium hydroxide. <br /> 10.5 Hazardous Polymerization <br /> Will not occur. <br /> 11 TOXICOLOGICAL INFORMATION-See Section.3 <br /> 12 ECOLOGICAL INFORMATION <br /> 12.1 Eco toxicity <br /> No recognized unusual toxicity to plants or animals. <br /> 12.2 Relevant Physical and Chemical Properties <br /> (See Sections 9 and 10). <br /> 13 DISPOSAL <br /> Dispose of waste material,including bags,according to local,state,and federal regulations. <br /> Page 4 of 5 <br />