Typical Specifications of a Premium Unleaded Gasoline 91 Octane
Source : CITGO Petroleum Material Data Sheet
(NSN:9130012720983)


A.                   Ingredients       Percent
     BENZENE (SARA III)       less than 5% 
     LOWER ALIPHATIC ALCOHOLS        0 - 11%
     LOWER ALIPHATIC ETHERS        0 - 15%
     TERT-BUTYL ALCOHOL (SARA III)        0 - 10%
    ETHER BENZENE (SARA III)        0 - 5 %
    METHYL-TERT-BUTYL-ETHER (SARAIII)        0 - 15%
    TOLUENE (SARA III)        0 -25%
    1,2,4-TRIMETHYLBENZENE (SARAIII)        0 - 5%
    XYLENES (O-,M-,P- ISOMERS) (SARA III)        0 - 25%
   GASOLINE (CONTAINS THE ABOVE)        100.0% 
B.     Physical/Chemical Characteristics     Description
    Appearance and Odor  Light yellow or 
clear liquid - gasoline 
odor.
    Boiling Point 95 deg. F, 35 deg. C
    Melting Point Not known.
   Vapor pressur (MM Hg. at 70 deg.F) 510-760 @25
   Vapor density   (Air=1)    3 - 4
   Specific Gravity   0.75
   Decomposition Temperature Unknown.
   Evaporation Rate and Ref. less than 1 (N-BUTYL
ACETATE = 1)
   Solubility in water Negligible.
   Percent Volatiles by Volume     100
   Corrosion Rate (IPY) Unknown.
C.    Health Hazard Data     Description
   LD50-LC50 Mixture TLV for Benzene is 10 ppm.
   Route of Entry Inhalation - YES
   Route of Entry Skin - YES.
   Route of Entry Ingestion - NO.
Health Hazards - 
         Acute and Chronic
ACUTE - TOXIC. Lethal dose for 150 lb. human may be 0.3-8 oz. Ingestion causes burning of mouth & upper GI tract, general depression, coma. Inhalation can cause euphoria, convulsion, coma. Irritates eyes & dries skin. CHRONIC - Dermatitis. Benzene may produce anemia, leukemia. Target organs:Hematopoitic, lungs, skin.
Carcinogenicity - YES (NTP,IARC,OSHA). Explanation : Contains benzene which is listed as a carcinogen.

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