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CALCIUM HYDROXIDE <br />• <br />Not considered to be a fire hazard. <br />Explosion: <br />Not considered to be an explosion hazazd. <br />Fire Extinguishing Media: <br />Use any means suitable for extinguishing surrounding fire. <br />• <br />http://wW w.jtbaker.com/msds/c0407.htm <br />Special Information: <br />In the event of a fire, weaz full protective clothing and NIO5H-approved self-cohtained <br />breathing apparatus with full facepiece operated in the pressure demand or other positive <br />pressure mode. <br />6. Accidental Release Measures <br />Ventilate area of leak or spill. Keep unnecessary and unprotected people away from area of <br />spill. Wear appropriate personal protective equipment as specified in Section 8. spills: Pick <br />up and place in a suitable container for reclamation or disposal, using a method that does <br />not generate dust. Do not flush caustic residues to the sewer. Residues from spills can be <br />diluted with water, neutralized with dilute acid such as acetic, hydrochloric or sulfuric. <br />Absorb neutralized caustic residue on clay, vermiculite or other inert substance and package <br />in a suitable container for disposal. <br />7. Handling and Storage <br />Keep in a tightly closed container, stored in a cool, dry, ventilated azea. Protect against <br />phystcal damage. Isolate from incompatible substances. Containers of this material may be <br />hazardous when empty since they retain product residues (dust, solids); observe all <br />warnings and precautions listed for the product. <br />8. Exposure ControlslPersonal Protection <br />Airborne Exposure Limits: <br />-OSHA Permissible Exposure Limit (PEL): 15 mg/m3 (total dust), 5 mg/m3 (reslpirable <br />fraction) -ACGIH Threshold Limit Value (TLV): 5 mg/m3 <br />Ventilation System: <br />A system of local andlor general exhaust is recommended to keep employee exposures <br />below the Airborne Exposure Limits. Local exhaust ventilation is generally prefetred <br />because it can control the emissions of the contaminant at its source, preventing dispersion <br />of it into the general work azea. Please refer to the ACGIH document, Industrial 1'entilation, <br />A Manual of Recommended Practices, most recent edition, for details. <br />Personal Respirators (NIOSH Approved): <br />If the exposure limit is exceeded, a full facepiece respirator with dust/mist filter may be <br />worn up to 50 times the exposure limit or the maximum use concentration specified by the <br />appropriate regulatory agency or respirator supplier, whichever is lowest. For emergencies <br />or tnstances where the exposure levels are not known, use a full-facepiece positive-pressure, <br />air-supplied respirator. WARNING: Air purifying respirators do not protect workers in <br />oxygen-deficient atmospheres. <br />3 of 7 10/19/99 10:39 AM <br />