ISOPAR K                                
EXXON COMPANY, U.S.A                                                            
                                                   DATE ISSUED:      01/21/00   
                                                   SUPERSEDES DATE:  03/22/99   
                                                                                
                                                                                
                                                                                
                MATERIAL SAFETY DATA SHEET                                      
                                                                                
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  SECTION 1:  PRODUCT AND COMPANY IDENTIFICATION                                
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COMPANY:  EXXON COMPANY, U.S.A.                                                 
          P.O. BOX 2180                                                         
          HOUSTON, TX  77252-2180                                               
                                                                                
PRODUCT NAME                                  PRODUCT CODE                      
 ISOPAR K                                      133467                           
                                                                                
PRODUCT CATEGORY                                                                
 Hydrocarbon Fluid                                                              
                                                                                
MEDICAL EMERGENCY TELEPHONE NUMBER:  (713) 656-3424                             
                                                                                
TRANSPORTATION EMERGENCY TELEPHONE NUMBERS                                      
 (BAYTOWN) (281) 834-3296          (CHEMTREC) 1-800-424-9300                    
                                                                                
Product Information and Technical Assistance:  1-800-443-9966                   
                                                                                
FAXED MSDSs: 1-800-298-4007  MAILED MSDSs OR OTHER ASSISTANCE: (713) 656-5949   
                                                                                
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  SECTION 2:  COMPOSITION/INFORMATION ON INGREDIENTS                            
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                                          CAS NO. OF    APPROXIMATE             
COMPONENTS                                COMPONENTS    CONCENTRATION           
 Naphtha (petroleum), hydrotreated heavy  64742-48-9    100%                    
                                                                                
 This product consists predominantly of C11-C12 isoparaffinic hydrocarbons.     
                                                                                
SEE SECTION 8 FOR EXPOSURE LIMITS                                               
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  SECTION 3:  HAZARDS IDENTIFICATION                                            
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                                EMERGENCY OVERVIEW                              
OSHA REQUIRED LABEL INFORMATION                                                 
 In compliance with hazard and right-to-know requirements, where applicable     
 OSHA Hazard Warnings may be found on the label, bill of lading or invoice      
 accompanying this shipment.                                                    
                                  DANGER!                                       
                                COMBUSTIBLE                                     
                                                                                
 Note:  Product label may contain non-OSHA related information also.            
                                                                                
HAZARDOUS MATERIALS IDENTIFICATION SYSTEM (HMIS)                                
 Health  Flammability  Reactivity       BASIS                                   
    1          2            0           Recommended by Exxon                    
                                                                                
                                                                                
NATIONAL FIRE PROTECTION ASSOCIATION (NFPA) - HAZARD IDENTIFICATION             
 Health  Flammability  Reactivity        BASIS                                  
    1          2            0            Recommended by Exxon                   
                                                                                
VARIABILITY AMONG INDIVIDUALS                                                   
 Health studies have shown that many petroleum hydrocarbons and synthetic       
 lubricants pose potential human health risks which may vary from person to     
 person.  As a precaution, exposure to liquids, vapors, mists or fumes should   
 be minimized.                                                                  
                                                                                
EFFECTS OF OVEREXPOSURE (Signs and symptoms of exposure)                        
 High vapor concentrations (greater than approximately 1000 ppm) are irritating 
 to the eyes and the respiratory tract, and may cause headaches, dizziness,     
 anesthesia, drowsiness, unconsciousness, and other central nervous system      
 effects, including death.                                                      
                                                                                
                                                                                
PRE-EXISTING MEDICAL CONDITIONS WHICH MAY BE AGGRAVATED BY EXPOSURE             
 Petroleum Solvents/Petroleum Hydrocarbons - Skin contact may aggravate an      
 existing dermatitis.                                                           
                                                                                
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  SECTION 4:  FIRST AID MEASURES                                                
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EYE CONTACT                                                                     
 If splashed into the eyes, flush with clear water for 15 minutes or until      
 irritation subsides.  If irritation persists, call a physician.                
                                                                                
SKIN                                                                            
 In case of skin contact, remove any contaminated clothing and wash skin with   
 soap and water.  Launder or dry-clean clothing before reuse.  If product is    
 injected into or under the skin, or into any part of the body, regardless of   
 the appearance of the wound or its size, the individual should be evaluated    
 immediately by a physician as a surgical emergency.  Even though initial       
 symptoms from high pressure injection may be minimal or absent, early surgical 
 treatment within the first few hours may significantly reduce the ultimate     
 extent of injury.                                                              
                                                                                
INHALATION                                                                      
 If overcome by vapor, remove from exposure and call a physician immediately.   
 If breathing is irregular or has stopped, start resuscitation, administer      
 oxygen, if available.                                                          
                                                                                
INGESTION                                                                       
 If ingested, DO NOT induce vomiting; call a physician immediately.             
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  SECTION 5:  FIRE-FIGHTING MEASURES                                            
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FLASH POINT (MINIMUM)                        AUTOIGNITION TEMPERATURE           
 COMBUSTIBLE  -  Per DOT 49 CFR 173.120                                         
 49~C (120~F)                                 Approximately 349~C (660~F)       
 ASTM D 56, Tag Closed Cup                    ASTM E 659                        
                                                                                
FLAMMABLE OR EXPLOSIVE LIMITS (APPROXIMATE PERCENT BY VOLUME IN AIR)            
 Estimated values:  Lower Flammable Limit 1.2%      Upper Flammable Limit 9.3%  
                                                                                
EXTINGUISHING MEDIA AND FIRE FIGHTING PROCEDURES                                
 Foam, water spray (fog), dry chemical, carbon dioxide and vaporizing liquid    
 type extinguishing agents may all be suitable for extinguishing fires          
 involving this type of product, depending on size or potential size of fire    
 and circumstances related to the situation.  Plan fire protection and response 
 strategy through consultation with local fire protection authorities or        
 appropriate specialists.                                                       
                                                                                
 The following procedures for this type of product are based on the             
 recommendations in the National Fire Protection Association's "Fire Protection 
 Guide on Hazardous Materials", Tenth Edition (1991):                           
                                                                                
 Use dry chemical, foam or carbon dioxide to extinguish the fire.  "Water may   
 be ineffective", but water should be used to keep fire-exposed containers      
 cool.  If a leak or spill has ignited, use water spray to disperse the vapors  
 and to protect persons attempting to stop a leak.  Water spray may be used to  
 flush spills away from exposures.  Minimize breathing of gases, vapor, fumes   
 or decomposition products.  Use supplied-air breathing equipment for enclosed  
 or confined spaces or as otherwise needed.                                     
                                                                                
 NOTE:  The inclusion of the phrase "water may be ineffective" is to indicate   
 that although water can be used to cool and protect exposed material, water    
 may not extinguish the fire unless used under favorable conditions by          
 experienced fire fighters trained in fighting all types of flammable liquid    
 fires.                                                                         
                                                                                
DECOMPOSITION PRODUCTS UNDER FIRE CONDITIONS                                    
 Fumes, smoke, carbon monoxide, sulfur oxides, aldehydes and other              
 decomposition products, in the case of incomplete combustion.                  
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  SECTION 6:  ACCIDENTAL RELEASE MEASURES                                       
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CLEAN WATER ACT / OIL POLLUTION ACT                                             
 This product may be classified as an oil under Section 311 of the Clean Water  
 Act, and under the Oil Pollution Act.  Discharges or spills into or leading to 
 surface waters that cause a sheen must be reported to the National Response    
 Center (1-800-424-8802).                                                       
                                                                                
STEPS TO BE TAKEN IN CASE MATERIAL IS RELEASED OR SPILLED                       
 Shut off and eliminate all ignition sources.  Keep people away.  Recover free  
 product.  Add sand, earth or other suitable absorbent to spill area.  Minimize 
 breathing vapors.  Minimize skin contact.  Ventilate confined spaces.  Open    
 all windows and doors.  Keep product out of sewers and watercourses by diking  
 or impounding.  Advise authorities if product has entered or may enter sewers, 
 watercourses, or extensive land areas.                                         
                                                                                
 Assure conformity with applicable governmental regulations.  Continue to       
 observe precautions for volatile, combustible vapors from absorbed material.   
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  SECTION 7:  STORAGE AND HANDLING                                              
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HANDLING PRECAUTIONS                                                            
 This liquid is volatile and gives off invisible vapors.  Either the liquid or  
 vapor may settle in low areas or travel some distance along the ground or      
 surface to ignition sources where they may ignite or explode.                  
                                                                                
 Keep product away from ignition sources, such as heat, sparks, pilot lights,   
 static electricity, and open flames.                                           
                                                                                
"EMPTY" CONTAINER WARNING                                                       
 "Empty" containers retain residue (liquid and/or vapor) and can be dangerous.  
 DO NOT PRESSURIZE, CUT, WELD, BRAZE, SOLDER, DRILL, GRIND OR EXPOSE SUCH       
 CONTAINERS TO HEAT, FLAME, SPARKS, STATIC ELECTRICITY, OR OTHER SOURCES OF     
 IGNITION; THEY MAY EXPLODE AND CAUSE INJURY OR DEATH.                          
                                                                                
 Do not attempt to refill or clean containers since residue is difficult to     
 remove. "Empty" drums should be completely drained, properly bunged and        
 promptly returned to a drum reconditioner.  All other containers should be     
 disposed of in an environmentally safe manner and in accordance with           
 governmental regulations.                                                      
                                                                                
 For work on tanks refer to Occupational Safety and Health Administration       
 regulations, ANSI Z49.1, and other governmental and industrial references      
 pertaining to cleaning, repairing, welding, or other contemplated operations.  
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  SECTION 8:  EXPOSURE CONTROLS/PERSONAL PROTECTION                             
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EXPOSURE LIMIT FOR TOTAL PRODUCT        BASIS                                   
 300 ppm (2000 mg/m3) for an 8-hour     Recommended by Exxon                    
 workday                                                                        
                                                                                
VENTILATION                                                                     
 Use only with ventilation sufficient to prevent exceeding recommended exposure 
 limit or buildup of explosive concentrations of vapor in air.  No smoking, or  
 use of flame or other ignition sources.                                        
                                                                                
RESPIRATORY PROTECTION                                                          
 Use supplied-air respiratory protection in confined or enclosed spaces, if     
 needed.                                                                        
                                                                                
PROTECTIVE GLOVES                                                               
 Use chemical-resistant gloves, if needed, to avoid prolonged or repeated skin  
 contact.                                                                       
                                                                                
EYE PROTECTION                                                                  
 Use splash goggles or face shield when eye contact may occur.                  
                                                                                
OTHER PROTECTIVE EQUIPMENT                                                      
 Use chemical-resistant apron or other impervious clothing, if needed, to avoid 
 contaminating regular clothing, which could result in prolonged or repeated    
 skin contact.                                                                  
                                                                                
WORK PRACTICES / ENGINEERING CONTROLS                                           
 To prevent fire or explosion risk from static accumulation and discharge,      
 effectively bond and/or ground product transfer system in accordance with      
 (THE) National Fire Protection Association PUBLICATIONS.                       
                                                                                
 Keep containers closed when not in use.  Do not store near heat, sparks, flame 
 or strong oxidants.  To prevent fire or explosion risk from static             
 accumulation and discharge, effectively bond and/or ground product transfer    
 system in accordance with the National Fire Protection Association standard    
 for petroleum products.                                                        
                                                                                
 In order to prevent fire or explosion hazards, use appropriate equipment.      
                                                                                
 Information on electrical equipment appropriate for use with this product may  
 be found in the latest edition of the National Electrical Code (NFPA-70).      
 This document is available from the National Fire Protection Association,      
 Batterymarch Park, Quincy, Massachusetts  02269.                               
                                                                                
PERSONAL HYGIENE                                                                
 Minimize breathing vapor or mist.  Avoid prolonged or repeated contact with    
 skin.  Remove contaminated clothing; launder or dry-clean before re-use.       
 Remove contaminated shoes and thoroughly clean and dry before re-use.  Cleanse 
 skin thoroughly after contact, before breaks and meals, and at end of work     
 period.  Product is readily removed from skin by waterless hand cleaners       
 followed by washing thoroughly with soap and water.                            
                                                                                
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  SECTION 9:  PHYSICAL AND CHEMICAL PROPERTIES                                  
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The following data are approximate or typical values and should not be used     
for precise design purposes.                                                    
                                                                                
BOILING RANGE                              VAPOR PRESSURE                       
 177-197~C (351-387~F)                      0.9 mm Hg @ 20~C (68~F)             
                                            ASTM D 2879                         
                                                                                
SPECIFIC GRAVITY (15.6~C/15.6~C)           VAPOR DENSITY (AIR = 1)              
 0.76 (6.34 lb/gal)                         5.4                                 
                                                                                
MOLECULAR WEIGHT                           PERCENT VOLATILE BY VOLUME           
 164                                        Approximately 50% in 68 minutes     
                                            @ 1 atm. and 25~C (77~F)            
                                                                                
                                           EVAPORATION RATE @ 1 ATM. AND 25~C   
pH                                         (77~F) (n-BUTYL ACETATE = 1)         
 Essentially neutral                        0.08                                
                                                                                
                                           SOLUBILITY IN WATER @ 1 ATM.         
POUR, CONGEALING OR MELTING POINT          AND 25~C (77~F)                      
 Less than -18~C (0~F)                      Negligible; 0.0001%                 
 Pour Point by ASTM D 97                                                        
                                                                                
VISCOSITY                                                                       
 1.84 cSt @ 25~C (77~F)  ASTM D 445                                             
                                                                                
PRODUCT APPEARANCE AND ODOR                                                     
 Clear water-white liquid                                                       
 Essentially odorless                                                           
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  SECTION 10:  STABILITY AND REACTIVITY                                         
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 This product is stable and will not react violently with water.  Hazardous     
 polymerization will not occur.  Avoid contact with strong oxidants such as     
 liquid chlorine, concentrated oxygen, sodium hypochlorite, calcium             
 hypochlorite, etc., as this presents a serious explosion hazard.               
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  SECTION 11:  TOXICOLOGICAL INFORMATION                                        
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NATURE OF HAZARD AND TOXICITY INFORMATION                                       
 Prolonged or repeated skin contact with this product tends to remove skin      
 oils, possibly leading to irritation and dermatitis; however, based on human   
 experience and available toxicological data, this product is judged to be      
 neither a "corrosive" nor an "irritant" by OSHA criteria.                      
                                                                                
 Product contacting the eyes may cause eye irritation.                          
                                                                                
 Product has a low order of acute oral and dermal toxicity, but minute amounts  
 aspirated into the lungs during ingestion or vomiting may cause mild to severe 
 pulmonary injury and possibly death.                                           
                                                                                
 This product is judged to have an acute oral LD50 (rat) greater than 5 g/kg of 
 body weight, and an acute dermal LD50 (rabbit) greater than 3.16 g/kg of body  
 weight.                                                                        
                                                                                
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  SECTION 12:  ECOLOGICAL INFORMATION                                           
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 Do not discharge this product into public waters or waterways unless           
 authorized by a National Pollution Discharge Elimination System (NPDES) permit 
 issued by the Environmental Protection Agency (EPA).                           
                                                                                
 Environmental and Ecological data may be available for this product.  Write or 
 call Exxon to obtain further information.  Refer to Section 6 and Section 15   
 for Accidental Release information and Regulatory Reporting information.       
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  SECTION 13:  DISPOSAL CONSIDERATION                                           
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 Options for disposal of this product may depend on the conditions under which  
 it was used.  To determine the proper method of disposal, refer to RCRA (40    
 CFR 261), as well as federal EPA and state and local regulations.              
                                                                                
 Please refer to Sections 5, 6 and 15 for additional information.               
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  SECTION 14:  TRANSPORTATION INFORMATION                                       
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TRANSPORTATION INCIDENT INFORMATION                                             
 For further information relative to spills resulting from transportation       
 incidents, refer to latest Department of Transportation Emergency Response     
 Guidebook for Hazardous Materials Incidents.                                   
                                                                                
U.S. DOT HAZARDOUS MATERIALS SHIPPING DESCRIPTION                               
 Transported by highway or rail:                                                
                                                                                
   Bulk packagings (capacity greater than 119 gallons)                          
     Petroleum Distillate, n.o.s., Combustible Liquid, UN1268, III              
                                                                                
   Non-bulk packagings (capacity less than or equal to 119 gallons)             
     Not regulated                                                              
                                                                                
 Transported by air or marine vessel:                                           
                                                                                
   Bulk or non-bulk packagings                                                  
     Petroleum Distillate, n.o.s., 3, UN1268, III                               
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  SECTION 15:  REGULATORY INFORMATION                                           
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U.S. FEDERAL REGULATIONS                                                        
                                                                                
THE FOLLOWING INFORMATION MAY BE USEFUL IN COMPLYING WITH VARIOUS STATE AND     
FEDERAL LAWS AND REGULATIONS UNDER VARIOUS ENVIRONMENTAL STATUTES:              
                                                                                
THRESHOLD PLANNING QUANTITY (TPQ), EPA REGULATION 40 CFR 355                    
(SARA Sections 301-304)                                                         
 No TPQ for product or any constituent greater than 1% or 0.1% (carcinogen).    
                                                                                
TOXIC CHEMICAL RELEASE REPORTING, EPA REGULATION 40 CFR 372 (SARA Section 313)  
 No toxic chemical is present greater than 1% or 0.1% (carcinogen).             
                                                                                
HAZARDOUS CHEMICAL REPORTING, EPA REGULATION 40 CFR 370 (SARA Sections 311-312) 
 EPA Hazard Classification Code:  Fire                                          
                                                                                
TOXIC SUBSTANCES CONTROL ACT (TSCA)                                             
 This product, as manufactured by Exxon, does not contain polychlorinated       
 biphenyls (PCB's).                                                             
                                                                                
 All components of this product are listed on the U.S. TSCA inventory.          
                                                                                
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  SECTION 16:  OTHER INFORMATION                                                
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The health and safety information presented herein must be used in conjunction  
with the pertinent standards for training, work practices and facilities        
design established by OSHA, NIOSH, NFPA, API, NEC, NSC, UNDERWRITERS, BUREAU    
OF MINES, and similar organizations.                                            
                                                                                
The information and recommendations contained herein are, to the best of        
Exxon's knowledge and belief, accurate and reliable as of the date issued.      
Exxon does not warrant or guarantee their accuracy or reliability, and Exxon    
shall not be liable for any loss or damage arising out of the use thereof.      
                                                                                
The information and recommendations are offered for the user's consideration    
and examination, and it is the user's responsibility to satisfy itself that     
they are suitable and complete for its particular use.  If buyer repackages     
this product, legal counsel should be consulted to insure proper health, safety 
and other necessary information is included on the container.                   
                                                                                
The Environmental Information included under Section 15 hereof as well as the   
Hazardous Materials Identification System (HMIS) and National Fire Protection   
Association (NFPA) ratings have been included by Exxon Company, U.S.A. in order 
to provide additional health and hazard classification information. The ratings 
recommended are based upon the criteria supplied by the developers of these     
rating systems, together with Exxon's interpretation of the available data.