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APPENDIX B-1: MSDS DEFINITIONS (TLV-TWA) <br /> e. o d V e- e W ' ec! Average. The time-weighted average concentrations for a <br /> normal 8-hour workday and a 40-hour work week, to which nearly all workers may be repeatedly <br /> exposed without adverse effect. <br /> .3 <br /> (PEL) Time weighted average concentrations similar to (and in many cases derived from) the <br /> Threshold Limit Values. <br /> (REL) a led x sore ' 't as defined by NIOSH similar to the Threshold Limit Values. <br /> (IDH e ' is to a colt -Any atmospheric condition that poses an immediate <br /> threat to life,or which is likely.to result in acute orimmediate severe health effects, Oxygen <br /> deficiency is IDLH. <br /> i. <br /> ion of va r in air below which propagation <br /> EL we x osive imi <br /> The minimum concentrat po <br /> of a flame will not occur in the presence of an ignition source. <br /> (UEL) Upper Exnl'osivo LijIlj -The n minium concentration of vapor in air above which propagation <br /> of a flame,will not occur in the presence of an ignition source. <br /> Flash Point(F.P.) The lowest temperature at which the vapor of a combustible liquid can be made to ignite <br /> momentarily in air. <br /> Vapor Pressure (V.P.) The pressure characteristic at any given temperature of a vapor in equilibrium with its liquid <br /> or solid form, often expressed in millimeters of mercury (mm Hg). <br /> Odor Threshold A property displayed by a particular compound. Low detection indicates a physiological <br /> sensation due to molecular contact with the olfactory nervous system(based on 50% of the <br /> population). <br /> Ionization Potential The amount'of ionization characteristic a particular chemical compound displays. <br /> i' <br /> I CONTAMINANTS PROFILE <br /> Chemical Expo ure Route Symptoms of Overexposure Incompatibilities <br /> Gasoline Inhalation + Intense burning of mucous membranes,throat,and Oxidizing agents such as <br /> respiratory tract;Bushing of face,staggering gait, hydrogen peroxide,nitric acid. <br /> slurred speech,mental confusion <br /> Ingestion • Inebriation,drowsiness,blurred vision,dizziness, <br /> confusion,-vonuting,cyanosis. <br /> Skin Contact • Prolonged skin contact may cause dermatitis <br /> Diesel Fuel Inhalation • Irritation to respiratory passages,headache,dizziness Oxidizing agents such as <br /> C Jet Fuel and/or and nausea,vomiting,loss of coordination hydrogen peroxide,nitric acid <br /> Fuel Oils Ingestion <br /> • Chemical pneumonitis(when oil is aspirated in the <br /> lungs) <br /> Skin Contact • Irritation,rash of acne pimples and spots <br />