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MATERIAL SAFETY DATA SHEET <br /> Product Name: Base Seal® (Component `A', Isocyanate) <br /> MSDS-AO04 <br /> monitored regularly because of the possibility of blockage. Avoid <br /> breathing aerosols, mists and vapours. (See Section 8— Exposure <br /> Control for details). <br /> Storage: Keep containers properly sealed and when stored indoors, in a well- <br /> ventilated area. Keep contents away from moisture. Due to reaction <br /> with water, and producing CO2 gas, a hazardous buildup of pressure <br /> could result if contaminated containers are re-sealed. Do not reseal <br /> contaminated containers. Uncontaminated containers, free of <br /> moisture, may be resealed only after placing under a nitrogen blanket. <br /> Do not store in containers made of copper, copper alloy or galvanized <br /> surfaces. <br /> Ideal storage temperature is ,6-3181 v (60U-i vV or) <br /> Keep stocks of decontaminant (See Section 6) readily available. <br /> Section 8: Exposure Controls and Personal Protection <br /> Ingredient: ACGIH TLV(8-hr.TWA) ppm U.S. OSHA PEL <br /> (8 hr. TWA) <br /> mg/m3 <br /> Methylene bisphenyl 0.005 ppm TWA 0.02 ppm Ceiling <br /> isocyanate (MDI): <br /> PEL's are in accord with those recommended by OSHA. <br /> Preventive Measures: Conditions of use, adequacy of engineering or other control measures, <br /> and actual exposures will dictate the need for specific protective <br /> devices at your workplace. <br /> Engineering Controls: Use local exhaust ventilation to maintain airborne concentrations <br /> below the TLV. Suitable respiratory equipment should be used in <br /> cases of insufficient ventilation or where operational procedures <br /> demand it. For guidance on engineering control measures, refer to <br /> publications such as the ACGIH current edition of`Industrial <br /> Ventilation, a manual of Recommended Practice." <br /> Personal Protection: <br /> Eves: Chemical Safety goggles. If there is a potential for splashing, use a <br /> full face shield. <br /> Body and Hands: The following protective materials are recommended: Gloves <br /> (neoprene, nitril rubber or butyl rubber). Thin latex disposable gloves <br /> should be avoided for repeated or long term use. Protective clothing <br /> should be selected and used in accordance with "Guidelines for the <br /> Selection of Chemical Protective Clothing" published by ACGIH. <br /> Respiratory: When the product is sprayed or heated without adequate ventilation, <br /> an approved MSHA/NIOSH positive-pressure, supplied air respirator <br /> may be required. Air purifying respirators equipped with organic <br /> vapour cartridges and a HEPA (P100) particulate filter may be used <br /> under certain conditions when a cartridge change-out schedule has <br /> been developed in accordance with the OSHA respiratory protection <br /> Page 4 of 9 (A) <br />