Material Safety Data Sheet
MSDS ID NO.: 0196MAR001
Revision date: 08/10/2007
1. CHEMICAL PRODUCT AND COMPANY INFORMATION
Product name: Marathon Natural Gas - Dry
Synonym: Dry Natural Gas, Marathon; Gas Plant Natural Gas
Chemical Family: Natural Gas
Formula: Mixture
Manufacturer:
Marathon Oil Company
539 South Main Street
Findlay OH 45840
Other information: 419-421-3070
Emergency telephone number: 877-627-5463
2. COMPOSITION/INFORMATION ON INGREDIENTS
Natural Gas-Dry is a complex combination of hydrocarbons (predominantly C1 though C4) separated from Natural Gas.
Consists primarily of Methane and Ethane.
Ethyl mercaptan (15-25 ppm) is added as an odorant. The odor threshold of the mercaptan is 1 ppb.
Product information:
Name CAS Number Weight % ACGIH Exposure OSHA - Vacated Other:
Limits: PELs - Time
Weighted Ave
Marathon Natural Gas - Dry 68410-63-9 100 = 1000 ppm TWA
Aliphatic Hydrocarbon
Gas
[Alkane C1-C4]
Component Information:
Name CAS Number Weight % ACGIH Exposure OSHA - Vacated Other:
Limits: PELs - Time
Weighted Ave
Methane 74-82-8 50-95 = 1000 ppm TWA
Aliphatic Hydrocarbon
Gas [Alkane C1-C4]
Ethane 74-84-0 1-20 = 1000 ppm TWA
Aliphatic Hydrocarbon
Gas: [Alkane C1-C4]
Nitrogen 7727-37-9 0.1-18 Simple Asphyxiant
Propane 74-98-6 0.1-12 = 1000 ppm TWA = 1000 ppm TWA
Aliphatic Hydrocarbon = 1800 mg/m3 TWA
Gas [Alkane C1-C4]
Carbon Dioxide 124-38-9 0.5-5 = 5000 ppm TWA = 10000 ppm TWA
= 30000 ppm STEL = 18000 mg/m3 TWA
= 30000 ppm STEL
= 54000 mg/m3 STEL
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.
MSDS ID NO.: 0196MAR001 Product name: Marathon Natural Gas - Dry Page 1 of 9
3. HAZARDS IDENTIFICATION
EMERGENCY OVERVIEW
THIS PRODUCT IS A COLORLESS GAS UNDER PRESSURE STENCHED WITH A FOUL SMELLING ODORANT. IT IS
EXTREMELY FLAMMABLE AND EXPLOSIVE. KEEP AWAY FROM HEAT, SPARKS AND OPEN FLAME. AT HIGH
CONCENTRATIONS THIS PRODUCT ACTS AS A SIMPLE ASPHYXIANT, WHICH DISPLACES OXYGEN FROM THE
BREATHNG ATMOSPHERE.
OSHA WARNING LABEL:
DANGER!
EXTREMELY FLAMMABLE GAS UNDER PRESSURE.
CONSUMER WARNING LABEL:
A CONSUMER WARNING LABEL IS NOT APPLICABLE FOR THIS PRODUCT.
Inhalation: Product is an anesthetic at high concentrations, producing dizziness, headache,
incoordination and narcosis; extremely high concentrations can cause asphyxiation
and death by displacement of oxygen from the breathing atmosphere.
Ingestion: Ingestion not likely.
Skin contact: Product is generally non-irritating to skin.
Eye contact: Product is generally non-irritating to eyes. Pressurized gas can cause mechanical
injury to the eye.
Carcinogenic Evaluation:
Product information:
Name IARC NTP ACGIH - OSHA - Select
Carcinogens: Carcinogens: Carcinogens: Carcinogens:
Marathon Natural Gas - Dry NE
68410-63-9
Notes: The International Agency for Research on Cancer (IARC) has not evaluated this
product.
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: If symptoms or irritation occur, call a physician.
Ingestion: Ingestion not likely. If swallowed, immediately call a physician.
Eye contact: If symptoms occur, call a physician
Medical conditions aggravated No data available.
by exposure:
5. FIRE FIGHTING MEASURES
MSDS ID NO.: 0196MAR001 Product name: Marathon Natural Gas - Dry Page 2 of 9
Suitable extinguishing media: For small fires, Class B fire extinguishing media such as
CO2 or dry chemical can be used. For large fires use water
spray or fog. 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
gas/liquid per the OSHA Hazard Communication Standard,
and should be handled accordingly. For additional fire
related information see NFPA 30 or North American
Emergency Response Guide 115.
Special protective equipment for firefighters: Bleve`s (boiling liquid expanding vapor explosions) can
occur when a liquid in a pressurized container in close
proximity to a fire reaches a temperature well above its
boiling point. Its effect could lead to a catastrophic failure of
the vessel resulting in flying equipment fragments, a shock
wave and a fireball causing serious damage and death.
Isolate hazard area. If safe to do so, stop the flow of gas
and allow fire to burn out. Extinguishing the flame before
shutting off the supply can cause the formation of explosive
mixtures. In some cases it may be preferred to allow the
flame to continue to burn. Keep surrounding area cool with
water spray from a distance and prevent further ignition of
combustible material. Avoid use of solid water streams.
Contact with water and liquified product can cause increased
vaporization.
Flash point: No data available.
Autoignition temperature: No data available.
Flammable limits in air - lower (%): 3.2
Flammable limits in air - upper (%): 14.0
NFPA rating: HMIS classification:
Health: 1 Health: 1
Flammability: 4 Flammability: 4
Reactivity: 0 Reactivity: 0
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.
Leaking containers should be moved outdoors or to well-ventilated area and contents
transferred to a suitable container. Product vapor is heavier than air and can collect
in low areas that are without sufficient ventilation. Advise authorities and National
Response Center (800-424-8802) if the product has entered a water course or
sewer.
7. HANDLING AND STORAGE
Handling:
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.
Avoid repeated and prolonged skin contact. Exercise good personal hygiene including removal of soiled clothing and
prompt washing with soap and water.
MSDS ID NO.: 0196MAR001 Product name: Marathon Natural Gas - Dry Page 3 of 9
8. EXPOSURE CONTROLS / PERSONAL PROTECTION
PERSONAL PROTECTIVE EQUIPMENT
Engineering measures: Local or general exhaust required if used in an enclosed area in order to keep
concentrations below the lower explosive limit.
Respiratory protection: Use atmosphere supplying respirators in the event of oxygen deficiency, when
material produces vapors that exceed permissible limits or when excessive vapors
are generated. Observe respirator protection factor criteria cited in ANSI Z88.2.
Self-contained breathing apparatus should be used for fire fighting.
Skin and body protection: No data available.
Eye protection: Goggles or faceshield may be needed when handling pressurized gases.
Hygiene measures: Use mechanical ventilation equipment that is explosion-proof.
9. PHYSICAL AND CHEMICAL PROPERTIES:
Appearance: Colorless Gas
Physical state (Solid/Liquid/Gas): Gas
Substance type (Pure/Mixture): Mixture
Color: Colorless
Odor: Rotten-egg.
Molecular weight: 16-30
pH: Neutral
Boiling point/range (5-95%): -259 TO -43 F
Melting point/range: Not determined.
Decomposition temperature: Not applicable.
Specific gravity: .37-.50 Liquid
Density: 3.0-4.1 lbs/gal @ 32 F
Bulk density: No data available.
Vapor density: 0.55-0.62
Vapor pressure: Not determined.
Evaporation rate: No data available.
Solubility: Slight
Solubility in other solvents: No data available.
Partition coefficient (n-octanol/water): No data available.
VOC content(%): No data available.
Viscosity: No data available.
10. STABILITY AND REACTIVITY
Stability: The material is stable at 70 F, 760 mm pressure.
Polymerization: Will not occur.
Hazardous decomposition products: Carbon monoxide and carbon dioxide
Materials to avoid: Strong oxidizers such as nitrates, perchlorates, chlorine,
fluorine.
Conditions to avoid: Sources of heat or ignition.
11. TOXICOLOGICAL INFORMATION
MSDS ID NO.: 0196MAR001 Product name: Marathon Natural Gas - Dry Page 4 of 9
Acute toxicity:
Product information:
Name CAS Number Inhalation: Dermal: Oral:
Marathon Natural Gas - Dry 68410-63-9 No data available No data available No data available
Some of the major components of this product act as simple asphyxiant gases without significant potential for systemic
toxicity. At high concentrations these gases act as asphyxiants by diluting and displacing oxygen. Symptoms of persons
exposed to oxygen deficient atmospheres include headache, dizziness, incoordination, cyanosis and narcosis. Extremely
high concentrations can produce unconsciousness followed by death.
This product contains >1.0% carbon dioxide. Fetal malformation was observed in the offspring of rats and rabbits
exposed to extremely high concentrations of carbon dioxide throughout pregnancy.
At extremely high concentrations and excessive exposure conditions components of this product may produce cardiac
sensitization.
12. ECOLOGICAL INFORMATION
Ecotoxicity effects: Most components of this product are lighter than air and would dissipate rapidly in
unconfined areas.
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 261). However, when discarded or disposed of, it may
meet the criteria of an "characteristic" hazardous waste. 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. Bleeding off small amounts of this product into
the atmosphere or controlled incineration of large amounts
are potential disposal methods provided all regulatory
requirements are met.
14. TRANSPORT INFORMATION
49 CFR 172.101:
DOT:
Transport Information: This material when transported via US commerce would be regulated by DOT
Regulations.
Proper shipping name: Natural Gas, Compressed
UN/Identification No: UN 1971
Hazard Class: 2.1
Packing group: Not applicable.
DOT reportable quantity (lbs): Not applicable.
TDG (Canada):
Proper shipping name: Natural Gas, Compressed
UN/Identification No: UN 1971
Hazard Class: 2.1
Packing group: Not applicable.
Regulated substances: Not applicable.
MSDS ID NO.: 0196MAR001 Product name: Marathon Natural Gas - Dry Page 5 of 9
15. REGULATORY INFORMATION
US 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
Methane NA
Ethane NA
Nitrogen NA
Propane NA
Carbon Dioxide 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
Methane NA
Ethane NA
Nitrogen NA
Propane NA
Carbon Dioxide NA
SARA Section 311/312: The following EPA hazard categories apply to this product:
Acute Health Hazard
Fire Hazard
Sudden Release Of Pressure
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:
Methane None
Ethane None
Nitrogen None
Propane None
Carbon Dioxide None
State and Community Right-To-Know Regulations:
The following component(s) of this material are identified on the regulatory lists below:
Methane
Louisiana Right-To-Know: Not Listed
California Proposition 65: Not Listed
New Jersey Right-To-Know: Listed
Pennsylvania Right-To-Know: Listed
Massachusetts Right-To Know: Listed
Florida substance List: Not Listed.
Rhode Island Right-To-Know: Listed
MSDS ID NO.: 0196MAR001 Product name: Marathon Natural Gas - Dry Page 6 of 9
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: Listed
New Jersey - Environmental Hazardous Listed
Substances List:
Illinois - Toxic Air Contaminants Not Listed
New York - Reporting of Releases Part 597 - Not Listed
List of Hazardous Substances:
Ethane
Louisiana Right-To-Know: Not Listed
California Proposition 65: Not Listed
New Jersey Right-To-Know: Listed
Pennsylvania Right-To-Know: Listed
Massachusetts Right-To Know: Listed
Florida substance List: Not Listed.
Rhode Island Right-To-Know: Listed
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: Listed
New Jersey - Environmental Hazardous Listed
Substances List:
Illinois - Toxic Air Contaminants Not Listed
New York - Reporting of Releases Part 597 - Not Listed
List of Hazardous Substances:
Nitrogen
Louisiana Right-To-Know: Not Listed
California Proposition 65: Not Listed
New Jersey Right-To-Know: Listed
Pennsylvania Right-To-Know: Listed
Massachusetts Right-To Know: Listed
Florida substance List: Not Listed.
Rhode Island Right-To-Know: Listed
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: Not Listed
New Jersey - Environmental Hazardous Not Listed
Substances List:
Illinois - Toxic Air Contaminants Not Listed
New York - Reporting of Releases Part 597 - Not Listed
List of Hazardous Substances:
Propane
Louisiana Right-To-Know: Not Listed
California Proposition 65: Not Listed
New Jersey Right-To-Know: Listed
Pennsylvania Right-To-Know: Listed
MSDS ID NO.: 0196MAR001 Product name: Marathon Natural Gas - Dry Page 7 of 9
Massachusetts Right-To Know: Listed
Florida substance List: Not Listed.
Rhode Island Right-To-Know: Listed
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: Listed
New Jersey - Environmental Hazardous Listed
Substances List:
Illinois - Toxic Air Contaminants Not Listed
New York - Reporting of Releases Part 597 - Not Listed
List of Hazardous Substances:
Carbon Dioxide
Louisiana Right-To-Know: Not Listed
California Proposition 65: Not Listed
New Jersey Right-To-Know: Listed
Pennsylvania Right-To-Know: Listed
Massachusetts Right-To Know: Listed
Florida substance List: Not Listed.
Rhode Island Right-To-Know: Listed
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: Not Listed
New Jersey - Environmental Hazardous Not Listed
Substances List:
Illinois - Toxic Air Contaminants Not Listed
New York - Reporting of Releases Part 597 - Not Listed
List of Hazardous Substances:
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:
Methane A, B1
Ethane A, B1
Nitrogen A
Propane A, B1
Carbon Dioxide A; Uncontrolled product according to WHMIS 1%
classification criteria (solid)
16. OTHER INFORMATION
Additional Information: The effectiveness of ethyl mercaptan as an odorant can be limited because the odor
tends to fade over time, is masked by the presence of other odors, and people vary
in their ability to recognize odors.
Prepared by: Craig M. Parker Manager, Toxicology and Product Safety
MSDS ID NO.: 0196MAR001 Product name: Marathon Natural Gas - Dry Page 8 of 9
The information and recommendations contained herein are based upon tests believed to be reliable. However,
Marathon Oil Company (MOC) 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 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.
Marathon 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
MSDS ID NO.: 0196MAR001 Product name: Marathon Natural Gas - Dry Page 9 of 9
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