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APPENDIX B-1: MSDS DEFINITIONS <br /> (TLV-TWA) Threshold Limit Value - Time Weighted Average The time-weighted average <br /> concentrations for a normal 8-hour work day and a 40-hour work week, to which nearly <br /> all workers may be repeatedly exposed without adverse effect <br /> (PEL) Time weighted average concentrations similar to (and in many cases derived from) the <br /> Threshold Limit Values <br /> (REL) Recommended Exposure Limit as defined by NIOSH similar to the Threshold Limit Values <br /> (IDLH) Immediately dangerous to life or health - Any atmospheric condition that poses an <br /> immediate threat to life, or which is likely to result in acute or immediate severe health <br /> effects Oxygen deficiency is IDLH <br /> (LEL) Lower Explosive Limit - The mimmum concentration of vapor in air below which <br /> propagation of a flame will not occur in the presence of an ignition source <br /> (UEL) _Upper Explosive Linut - The maximum concentration of vapor in air above which <br /> propagation 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 /> CONTAMINANTS PROFILE <br /> Chemical Exposure Symptoms of Overexposure Incompatibilities <br /> Route <br /> Gasoline Inhalation 0 Intense burning of mucous membranes,throat,and Oxidizing agents such as <br /> respiratory mart,flushing of face staggering gait, hydrogen peroxide nitric <br /> slurred speech mental confusion acid <br /> Ingestion 0 Inebriation drowsiness blurred vision dizziness <br /> confusion vomiung cyanosis <br /> Skin Contact 0 Prolonged skin contact may cause dermatitis <br /> Diesel Fuel Inhalation 0 Irritation to respiratory passages headache dizziness Oxidizing agents such as <br /> 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 0 Irritation rash of acne pimples and spots <br />