Material Safety Data Sheet
MSDS ID NO.: 0243MAR019
Revision date: 08/01/2006
1. CHEMICAL PRODUCT AND COMPANY INFORMATION
Product name: Marathon Cumene
Synonym: Cumene; Isopropylbenzene
Chemical Family: Aromatic Hydrocarbon
Formula: C6H5CH(CH3)2
Manufacturer:
Marathon Petroleum Company LLC
539 South Main Street
Findlay OH 45840
Other information: 419-421-3070
Emergency telephone number: 877-627-5463
2. COMPOSITION/INFORMATION ON INGREDIENTS
Cumene is an aromatic petroleum hydrocarbon. Contains trace amounts of toluene, C9 hydrocarbons and benzene (<50
ppm).
Product information:
Name CAS Number Weight % ACGIH Exposure OSHA - Vacated Other:
Limits: PELs - Time
Weighted Ave
Marathon Cumene 98-82-8 100 = 50 ppm TWA = 245 mg/m鲁 TWA
= 50 ppm TWA
Prevent or reduce skin
absorption
Component Information:
Name CAS Number Weight % ACGIH Exposure OSHA - Vacated Other:
Limits: PELs - Time
Weighted Ave
Cumene 98-82-8 99-100 = 50 ppm TWA = 245 mg/m鲁 TWA
= 50 ppm TWA
Prevent or reduce skin
absorption
Notes: The manufacturer has voluntarily elected to reflect exposure limits contained in
OSHA's 1989 air contaminants standard in its MSDS's, even though certain of those
exposure limits were vacated in 1992.
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3. HAZARDS IDENTIFICATION
EMERGENCY OVERVIEW
CUMENE IS A COLORLESS LIQUID WITH A STRONG HYDROCARBON ODOR. IT IS A VOLATILE AND EXTREMELY
FLAMMABLE LIQUID THAT MAY CAUSE FLASH FIRES. KEEP AWAY FROM HEAT, SPARKS AND OPEN FLAME.
NEVER SIPHON THIS PRODUCT BY MOUTH. IF SWALLOWED, THIS PRODUCT MAY GET SUCKED INTO THE
LUNGS (ASPIRATED) AND CAUSE LUNG DAMAGE OR EVEN DEATH. MAY CAUSE SKIN AND EYE BURNS UPON
LIQUID CONTACT.
OSHA WARNING LABEL:
DANGER!
FLAMMABLE LIQUID.
MAY CAUSE EYE OR SKIN IRRITATION.
ASPIRATION (INADVERTENT SUCTION) OF LIQUID INTO THE LUNGS CAN PRODUCE CHEMICAL PNEUMONIA
OR EVEN DEATH.
CONSUMER WARNING LABEL:
A CONSUMER WARNING LABEL IS NOT APPLICABLE FOR THIS PRODUCT.
Inhalation: Overexposure or prolonged exposure to lower concentrations can cause respiratory
irritation. Gross overexposure can cause central nervous system depression,
producing symptoms of headache, dizziness, narcosis, and muscular incoordination.
Ingestion: Ingestion or inhalation of high concentrations may cause injuries to gastrointestinal
tract, liver, kidneys and central nervous system. Aspiration (inadvertent suction) of
liquid into the lungs must be avoided as even small quantities in the lungs can
produce chemical pneumonitis, pulmonary edema/hemorrhage and even death.
Skin contact: Prolonged and repeated liquid contact can cause defatting and drying of the skin and
can lead to irritation and/or dermatitis.
Eye contact: Eye irritation may result from contact with the liquid or exposure to the vapor at
concentrations above the TLV.
Carcinogenic Evaluation:
Product information:
Name IARC NTP ACGIH - OSHA - Select
Carcinogens: Carcinogens: Carcinogens: Carcinogens:
Marathon Cumene NE
98-82-8
Notes: The International Agency for Research on Cancer (IARC) has not evaluated cumene
for carcinogenicity.
Component Information:
4. FIRST AID MEASURES
Inhalation: If affected, move person to fresh air. If breathing is difficult, administer oxygen. If not
breathing or if no heartbeat, give artificial respiration or cardiopulmonary
resuscitation (CPR). Immediately call a physician.
Skin contact: Wash with soap and large amounts of water. Remove contaminated clothing. If
symptoms or irritation occur, call a physician.
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Ingestion: If swallowed, do not induce vomiting and do not give liquids. Immediately call a
physician.
Eye contact: Flush eyes with large amounts of tepid water for at least 15 minutes. If symptoms or
irritation occur, call a physician.
Medical conditions aggravated Preexisting skin, eye and respiratory disorders may be aggravated by exposure to
by exposure: components of this product.
5. FIRE FIGHTING MEASURES
Suitable extinguishing media: For small fires, Class B fire extinguishing media such as
CO2, dry chemical, foam (AFFF/ATC) or water spray can be
used. For large fires, water spray, fog or foam (AFFT/ATC)
can be used. Fire fighting should be attempted only by those
who are adequately trained and equipped with proper
protective equipment.
Specific hazards: This product has been determined to be a flammable liquid
per the OSHA Hazard Communication Standard, and should
be handled accordingly. Vapors may travel along the
ground or be moved by ventilation and ignited by many
sources such as pilot lights, sparks, electric motors, static
discharge, or other ignition sources at locations distant from
material handling. Flashback can occur along vapor trail.
For additional fire related information, see NFPA 30 or the
North American Emergency Response Guide 130.
Special protective equipment for firefighters: Avoid using straight water streams. Water may be
ineffective in extinguishing low flash point fires, but can be
used to cool exposed surfaces. Avoid excessive water spray
application. Water spray and foam (AFFF/ATC) must be
applied carefully to avoid frothing and from as far a distance
as possible. Keep run-off water out of sewers and water
sources.
Flash point: 96 F
Autoignition temperature: 795 F
Flammable limits in air - lower (%): 0.9
Flammable limits in air - upper (%): 6.5
NFPA rating: HMIS classification:
Health: 2 Health: 2
Flammability: 3 Flammability: 3
Reactivity: 1 Reactivity: 1
Other: - Special: *See Section 8 for guidance in selection of
personal protective equipment.
6. ACCIDENTAL RELEASE MEASURES
Personal precautions: Keep public away. Isolate and evacuate area. Shut off source if safe to do so.
Eliminate all ignition sources. Advise authorities and National Response Center (800-
424-8802) if substance has entered a watercourse or sewer. Notify local health and
pollution control agencies, if appropriate. Contain liquid with sand or soil. Recover
and return free product to proper containers. Use suitable absorbent materials such
as vermiculite, sand, or clay to clean up residual liquids.
7. HANDLING AND STORAGE
Handling:
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Comply with all applicable EPA, OSHA, NFPA and consistent state and local requirements. Use appropriate grounding
and bonding practices. Store in properly closed containers that are appropriately labeled and in a cool well-ventilated
area. Do not expose to heat, open flames, strong oxidizers or other sources of ignition. Do not cut, drill, grind or weld on
empty containers since they may contain explosive residues.
Never siphon this product by mouth. Avoid repeated and prolonged skin contact. Exercise good personal hygiene
including removal of soiled clothing and prompt washing with soap and water.
Hydrocarbons are basically non-conductors of electricity and can become electrostatically charged during mixing, filtering,
pumping at high flow rates or loading and transfer operations. If this charge reaches a sufficiently high level, sparks can
form that may ignite the vapors of flammable liquids. Sudden release of hot organic chemical vapors or mists from
process equipment operating under elevated temperature and pressure, or sudden ingress of air into vacuum equipment
may result in ignitions without the presence of obvious ignition sources. Nozzle spouts must be kept in contact with the
containers or tank during the entire filling operation.
8. EXPOSURE CONTROLS / PERSONAL PROTECTION
PERSONAL PROTECTIVE EQUIPMENT
Engineering measures: Local or general exhaust required in an enclosed area or when there is inadequate
ventilation.
Respiratory protection: Approved organic vapor chemical cartridge or supplied air respirators should be worn
for exposures to any components exceeding the TLV or STEL. Observe respirator
protection factor criteria cited in ANSI Z88.2. Self-contained breathing apparatus
should be used for fire fighting.
Skin and body protection: Polyvinyl alcohol (PVA) or viton gloves to prevent skin contact.
Eye protection: No special eye protection is normally required. Where splashing is possible, wear
safety glasses with side shields.
Hygiene measures: Use mechanical ventilation equipment that is explosion-proof.
9. PHYSICAL AND CHEMICAL PROPERTIES:
Appearance: Colorless Liquid
Physical state (Solid/Liquid/Gas): Liquid
Substance type (Pure/Mixture): Pure
Color: Colored
Odor: Aromatic
Molecular weight: 120.2
pH: Neutral
Boiling point/range (5-95%): 305 F
Melting point/range: Not determined.
Decomposition temperature: Not applicable.
Specific gravity: Not determined
Density: 7.2 lbs/gal
Bulk density: No data available.
Vapor density: 4.2
Vapor pressure: 10 mm Hg @ 91 F
Evaporation rate: No data available.
Solubility: Not determined
Solubility in other solvents: No data available.
Partition coefficient (n-octanol/water): No data available.
VOC content(%): No data available.
Viscosity: No data available.
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10. STABILITY AND REACTIVITY
Stability: The material is stable at 70 F, 760 mm pressure.
Polymerization: Will not occur.
Hazardous decomposition products: Carbon monoxide, xylene vapors
Materials to avoid: Strong oxidizers such as nitrates, chlorates, peroxides.
Conditions to avoid: Sources of heat or ignition.
11. TOXICOLOGICAL INFORMATION
Acute toxicity:
Product information:
Name CAS Number Inhalation: Dermal: Oral:
Marathon Cumene 98-82-8 LC50 = 8000 ppm LD 50 = > 10,000 1.4 - 2.2 gm/kg
for 4 hrs [Rat] mg/kg [Rabbit] [Rat]
An early subchronic inhalation study at doses of 1,323 ppm cumene produced no effect in rabbits but showed some
evidence of slight damage to lung, liver, kidney, spleen and adrenals in rats. A subsequent study at 1,200 ppm cumene
for 13 weeks revealed mild toxicity evidenced by kidney damage in male rats and slight changes in some blood
parameters and increases liver, kidney and adrenal weights in the other animals. The kidney damage develops via the
formation of alpha-2u-globulin, is unique to the male rat and similar to effects seen with other petroleum hydrocarbons.
Since humans do not form alpha-2u-globulin, effects resulting from this mechanism are not relevant in humans.
Rats and mice exposed to up to 1000 ppm cumene, 6 hrs/day, 5 days/wk for up to two years developed nasal and
bladder tumors in male rats and lung tumors in male and female mice.
12. ECOLOGICAL INFORMATION
Ecotoxicity effects: The 96 hour EC50 for cumene in aquatic organisms is approximately 1 mg/l. This
product does not concentrate or accumulate in the food chain.
13. DISPOSAL CONSIDERATIONS
Cleanup Considerations: This product as produced is not specifically listed as an EPA
RCRA hazardous waste according to federal regulations (40
CFR 260-271). However, when discarded, spilled or
disposed of, it can become an EPA RCRA hazardous waste.
This product could also meet the criteria of an "ignitable"
hazardous waste (U055). This product could also contain
benzene at >0.5 ppm and could exhibit the characteristics of
"toxicity" as determined by the toxicity characteristic leaching
procedure (TCLP). This material could become a hazardous
waste if mixed or contaminated with a hazardous waste or
other substance(s). It is the responsibility of the user to
determine if disposal material is hazardous according to
federal, state and local regulations.
14. TRANSPORT INFORMATION
49 CFR 172.101:
DOT:
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Transport Information: This material when transported via US commerce would be regulated by DOT
Regulations.
Proper shipping name: Isopropylbenzene
UN/Identification No: UN 1918
Hazard Class: 3
Packing group: III
DOT reportable quantity (lbs): 5000 pounds
TDG (Canada):
Proper shipping name: Isopropylbenzene
UN/Identification No: UN 1918
Hazard Class: 3
Packing group: III
Regulated substances: 5000 pounds.
15. REGULATORY INFORMATION
Federal Regulatory Information:
US TSCA Chemical Inventory Section 8(b): This product and/or its components are listed on the TSCA
Chemical Inventory.
OSHA Hazard Communication Standard: This product has been evaluated and determined to be
hazardous as defined in OSHA's Hazard Communication
Standard.
EPA Superfund Amendment & Reauthorization Act (SARA):
SARA Section 302: This product contains the following component(s) that have been listed on EPA's
Extremely Hazardous Substance (EHS) List:
Name CERCLA/SARA - Section 302 Extremely Hazardous Substances and TPQs
Cumene NA
SARA Section 304: This product contains the following component(s) identified either as an EHS or a
CERCLA Hazardous substance which in case of a spill or release may be subject to
SARA reporting requirements:
Name CERCLA/SARA - Hazardous Substances and their Reportable Quantities
Cumene = 2270 kg final RQ
= 5000 lb final RQ
SARA Section 311/312: The following EPA hazard categories apply to this product:
Acute Health Hazard
Fire Hazard
SARA Section 313: This product contains the following component(s) that may be subject to reporting on
the Toxic Release Inventory (TRI) From R:
Name CERCLA/SARA 313 Emission reporting:
Cumene = 1.0 percent de minimis concentration
State and Community Right-To-Know Regulations:
The following component(s) of this material are identified on the regulatory lists below:
Cumene
Louisiana Right-To-Know: Not Listed
California Proposition 65: Not Listed
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New Jersey Right-To-Know: sn 0542
Pennsylvania Right-To-Know: environmental hazard
Massachusetts Right-To Know: Present
Florida substance List: Not Listed.
Rhode Island Right-To-Know: Toxic, Flammable
Michigan critical materials register list: Not Listed.
Massachusetts Extraordinarily Hazardous Not Listed
Substances:
California - Regulated Carcinogens: Not Listed
Pennsylvania RTK - Special Hazardous Not Listed
Substances:
New Jersey - Special Hazardous Substances: flammable - third degree
New Jersey - Environmental Hazardous SN 0542
Substances List:
Illinois - Toxic Air Contaminants Present
New York - Reporting of Releases Part 597 - = 1 lb Land/Water RQ
List of Hazardous Substances: = 5,000 lbs Air RQ
Canadian Regulatory Information:
Canada DSL/NDSL Inventory: This product and/or its components are listed either on the Domestic Substances List
(DSL) or are exempt.
Name Canada - WHMIS: Classifications of Substances: Canada - WHMIS: Ingredient Disclosure:
Cumene B2 1% (English Item 909, French Item 1054)
16. OTHER INFORMATION
Additional Information: No data available.
Prepared by: Craig M. Parker Manager, Toxicology and Product Safety
The information and recommendations contained herein are based upon tests believed to be reliable. However,
Marathon Petroleum Company LLC (MPC) does not guarantee their accuracy or completeness nor shall any of this
information constitute a warranty, whether expressed or implied, as to the safety of the goods, the merchantability of the
goods, or the fitness of the goods for a particular purpose. Adjustment to conform to actual conditions of usage maybe
required. MPC assumes no responsibility for results obtained or for incidental or consequential damages, including lost
profits arising from the use of these data. No warranty against infringement of any patent, copyright or trademark is made
or implied.
End of Safety Data Sheet
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