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Site Safety and Health Plan <br /> Petroleum Hydrocarbon Contamination <br /> Terracon Project# 67047008 <br /> Page 3 <br /> C H E M I N F 0 <br /> Canadian Centre for Occupational Health and Safety <br /> Issue : 97-4 (November, 1997) <br /> CHEMICAL NAME <br /> GASOLINE <br /> CAS REGISTRY NUMBER <br /> 8006-61-9 <br /> CHEMICAL FAMILY <br /> Mixed hydrocarbons/ petroleum hydrocarbon distillate <br /> DESCRIPTION <br /> APPEARANCE AND ODOUR : <br /> Colourless liquid with a characteristic odour. It may be dyed for recognition. <br /> ODOUR THRESHOLD : 0.12-0.15 ppm (recognition); 0.06-0.08 ppm (threshold) (1) <br /> WARNING PROPERTIES : <br /> GOOD -TLV is more than 10 times the odour threshold. <br /> COMPOSITION/PURITY : <br /> Gasoline is a complex mixture of petroleum hydrocarbons. The composition of the <br /> hydrocarbons depends on factors such as the origin of the crude oil used for refining and <br /> refining conditions. In general, the hydrocarbon groups consist of chains containing 4 to <br /> 12 carbons, and are mostly paraffins (alkanes), isoparaffins (isoalkanes), cycloparaffins <br /> (cycloalkanes) and aromatics. n-Hexane (1.5-3.0%) and benzene (0.5-2.0%) are <br /> normally present. <br /> USES AND OCCURRENCES : <br /> Fuel for motor vehicles; some use as diluent and solvent. <br /> HAZARDS IDENTIFICATION <br /> Colourless liquid with characteristic odour. May be dyed yellow. EXTREMELY <br /> FLAMMABLE LIQUID AND VAPOUR. Liquid can accumulate static charge by flow or <br /> agitation. Vapour is heavier than air and may spread long distances. Distant ignition <br /> and flash back are possible. Liquid can float on water and may spread to distant <br /> locations and/or spread fire. POSSIBLE <br /> CANCER HAZARD. May cause cancer, based on animal data. Central nervous system <br /> depressant. High vapour concentrations may cause headache, nausea, dizziness, <br /> drowsiness, unconsciousness and death. Aspiration hazard. Swallowing or vomiting of <br /> the liquid may result in aspiration into the lungs. <br /> EFFECTS OF SHORT-TERM (ACUTE) EXPOSURE : <br /> INHALATION : <br /> Gasoline vapours can cause central nervous system (CNS) depression.(1) No <br /> significant effects except eye and throat irritation were seen in volunteers exposed for 30 <br /> 3 <br />