SECTION 1 - CHEMICAL PRODUCT AND COMPANY IDENTIFICATION

SUPPLIER:

Brick Propane, Inc.
721 5 State St
Aberdeen, SD 57401

EMERGENCY HEALTH INFORMATION:
1-800-447-8735

24 HOUR EMERGENCY CONTACT
(in case of hazardous material accidents or Spills only)
1-800-633-8253 (PERS)

SUBSTANCE: PROPANE WITH ODORANT (AOC)

CREATION DATE: July 1,2003

REVISION DATE

CAS NUMBER: 74-98-6
EC NUMBER (EINECS): 200-827-9

PERCENTAGE: 100.0

COMPONENT: ETHYL MERCAPTAN
CAS NUMBER: 75-08-1
EC NUMBER (EINECS): 200-837-3
PERCENTAGE: <0.1

(See Section 8, "Exposure Controls, Personal Protection", for exposure guidelines)

SECTION 3 - HAZARDS IDENTIFICATION

NFPA RATINGS (SCALE 0-4): HEALTH=1 FIRE=4 REACTIVITY=0

EMERGENCY OVERVIEW:
COLOR: colorless
PHYSICAL FORM: gas
ODOR: odorant may be added
SIGNAL WORD: DANGER!

MAJOR HEALTH HAZARDS: At very high concentrations, can displace the normal air and cause suffocation from lack of oxygen. Liquid can cause bums similar to frostbite. Caution: Ethyl mercaptan used as a warning agent may not be entirely effective in all situations.

PHYSICAL HAZARDS: Flammable gas. May cause flash fire. Flash back hazard. Extremely flammable.

POTENTIAL HEALTH EFFECTS:

INHALATION:
At very high concentrations, can displace the normal air and cause suffocation from lack of oxygen. See Toxicological Information section (Section 11).

SKIN CONTACT:
Liquid can cause burns similar to frostbite.

EYE CONTACT:
Extremely cold material; can cause burns similar to frostbite

INGESTION
Ingestion of liquid can cause burns similar to frostbite.

INHALATION:
If adverse effects occure, remove to uncontaminated area. Give artificial respiration if not breathing. Get immediate medical attention.

SKIN CONTACT:
Contact with liquid: Immediately flush with plenty of tepid water (105-115 F; 41-46 C). DO NOT USE HOT WATER. Get immediate medical attention.

EYE CONTACT:
Contact with liquid: Immediately flush eyes with plenty of water for at least 15 minutes. Then get immediate medical attention.

INGESTION
Get immediate medical attention.

FIRE AND EXPLOSION HAZARDS: Severe fire hazard. The vapor is heavier than air. Vapors or gases may ignite at distant ignition sources and flash back. Vapor/air mixtures are explosive. Every precaution must be taken to keep containers cool to avoid the possibility of a Boiling Liquid Expanding Vapor Explosion (BLEVE). Pressurized containers are liable to explode violently when subjected to high temperature.

EXTINGUISHING MEDIA: Stop flow of gas if possible; if not, allow to bum., Do NOT direct water into liquid spill., Dry chemical can be used.

Large fires: Flood with fine water spray.

FIRE FIGHTING: Move container from fire area if it can be done without risk. Cool containers with water spray until well after the fire is out. Stay away from the ends of tanks. For fires in cargo or storage area: Cool containers with water from unmanned hose holder or monitor nozzles until well after fire is out. If this is impossible then take the following precautions: Keep unnecessary people away, isolate hazard area and deny entry. Let the fire bum. Withdraw immediately in case of rising sound from venting safety device or any discoloration of tanks due to fire. For tank, rail car or tank truck: Stop leak if possible without personal risk. Let bum unless leak can be stopped immediately. For smaller tanks or cylinders, extinguish and isolate from other flammables. Evacuation radius: 800 meters (1/2 mile). Stop flow of gas.

FIRE FIGHTING PROTECTIVE EQUIPMENT: Firefighters should wear full bunker gear, including a positive pressure self contained breathing apparatus.

FLASH POINT: -155 F (-104 C) (CC)
LOWER FLAMMABLE LIMIT: 2.1%
UPPER FLAMMABLE LIMIT: 9.5%
AUTOIGNITION: 842 F (450 C)

FLAMMABILITY CLASSIFICATION: Flammable gas.

HAZARDOUS COMBUSTION PRODUCTS:
Combustion products: oxides of carbon

Avoid heat, flames, sparks and other sources of ignition. Do not touch spilled material. Stop leak if possible without personal risk. Reduce vapors with water spray. Keep unnecessary people away, isolate hazard area and deny entry. Remove sources of ignition. Ventilate closed spaces before entering. Large spills: Dike for later disposal. Cover with plastic sheet or tarp to minimize spreading and protect from contact with water. Prevent spreading by diking, ditching, or absorbing on inert materials.

STORAGE: Outside storage is recommended. Store in a cool, dry place. Store in a well- ventilated area. Do not store in areas containing flammable or combustible products. Store below 49 C. Store away from heat, ignition sources, and open flame in accordance with applicable regulations.

HANDLING: Keep away from all ignition sources. Keep container tightly closed. Use only with adequate ventilation. Ground and bond containers when transferring materials. Do not cut, puncture, or weld on or near this container. Do not breathe vapors.

EXPOSURE LIMITS:
PROPANE WITH ODORANT (AOC):
The Official Mexican Norm states that for propane the minimum oxygen content in the air of the work environment shall be at least 19% in volume under normal pressure conditions (equivalent to a partial pressure of 135 mmHg).

PROPANE:
1000 ppm (1800 mg/m3) OSHA TWA
2500 ppm ACGIH TWA

VENTILATION: Control airborne concentrations below the exposure guidelines. Use with adequate ventilation. If ventilation is inadequate, use supplied- air respirator.

EYE PROTECTION: Do not get in eyes. Wear chemical goggles.

CLOTHING: As needed to prevent contact with liquid - wear impervious clothing.

GLOVES: As needed to prevent contact with liquid - wear gloves.

RESPIRATOR: Use with adequate ventilation.

Avoid breathing vapor or mist.
If operating conditions cause high vapor concentrations or TLV is exceeded, use supplied-air respirator approved by NIOSH.

SECTION 9 - PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE: gas
COLOR: colorless
ODOR: odorant may be added
BOILING POINT: -44 F (-42 C)
FREEZING POINT: -310 F (-190 C)
VAPOR PRESSURE: 189-208 psig @ 38 C
VAPOR DENSITY (air=l): 1.56 @ 0 C
SPECIFIC GRAVITY (water=1): 0.51 @ 16 C
WATER SOLUBILITY: 0.1-1.0%
PH: Not applicable
VOLATILITY: Not applicable
ODOR THRESHOLD: Not available
EVAPORATION RATE: Not applicable
COEFFICIENT OF WATER/OIL DISTRIBUTION: Not applicable

REACTIVITY: Stable at normal temperatures and pressure.

CONDITIONS TO AVOID: Avoid heat, flames, sparks and other sources of ignition. Minimize contact with material. Containers may rupture or explode if exposed to heat.

INCOMPATIBILITIES: halogens, strong oxidizing materials

HAZARDOUS DECOMPOSITION:
Combustion products: oxides of carbon

POLYMERIZATION: Will not polymerize.

SECTION 11 - TOXICOLOGICAL INFORMATION

EYE IRRITATION: Testing not conducted. See Other Toxicity Data.

SKIN IRRITATION: Testing not conducted. See Other Toxicity Data.

DERMAL LD5O: Testing not conducted. See Other Toxicity Data.

ORAL LD5O: Testing not conducted. See Other Toxicity Data.

INHALATION LC5O: Testing not conducted. See Other Toxicity Data.

OTHER TOXICITY DATA:
Specific toxicity tests have not been conducted on this product. Our hazard evaluation is based on information from similar products, the ingredients, technical literature, and/or professional experience.

This material is an asphyxiant. Asphyxiants may reduce the oxygen concentration in the air to dangerous levels. Symptoms of lack of oxygen include increased depth and frequency of breathing, air hunger, dizziness, headache, nausea or loss of consciousness.

No component of this product present at levels greater than 0.1% is identified as a carcinogen by the U.S. National Toxicology Program, the U.S. Occupational Safety and Health Act, or the International Agency on Research on Cancer (IARC).

Ecological testing has not been conducted on this product by Brick Propane.

Dispose in accordance with all applicable regulations. The container for this product can present explosion or fire hazards, even when emptied! To avoid risk of injury, do not cut, puncture or weld on or near this container. Since the emptied containers retain product residue, follow product insert warnings even after container is emptied.

U.S. DOT 49 CFR 172.101 SHIPPING NAME-ID NUMBER:
Propane see also Petroleum gases, liquefied.-UN 1978

U.S. DOT 49 CFR 172.101 HAZARD CLASS OR DIVISION: 2.1

U.S. DOT 49 CFR 172.101 AND SUBPART E LABELING REQUIREMENTS:
Flammable gas

U.S. DOT 49 CFR 172.101 PACKAGING AUTHORIZATIONS:
EXCEPTIONS: 49 CFR 173.306
NON-BULK PACKAGING: 49 CFR 173.304
BULK PACKAGING: 49 CFR 173.314, 315

U.S. DOT 49 CFR 172.101 QUANTITY LIMITATIONS:
PASSENGER AIRCRAFT OR RAILCAR: Forbidden
CARGO AIRCRAFT ONLY: 150 kg

CANADIAN TDG SHIPPING NAME-ID NUMBER: Propane see also Petroleum gases, liquefied.-UN 1978

CANADIAN TDG HAZARD CLASS OR DIVISION: 2.1

CANADIAN TDG LABELING REQUIREMENTS: Flammable gas

LAND TRANSPORT ADRIRID:
SUBSTANCE NAME: Propane, technically-pure/Propane, technically pure
ID NUMBER: UN1978
ADR/RID CLASS: 2
ITEM NUMBER: 3(b)/2F
WARNING SIGN/LABEL: 3/3; 13
HAZARD ID NUMBER: 23
AIR TRANSPORT IATAIICAO: Not determined.
MARITIME TRANSPORT IMDG:
CORRECT TECHNICAL NAME: Propane
ID NUMBER: UN 1978
IMDG CLASS: 2(2.1)
EmS No.: 2-07
MFAG Table No.: 310
MARINE POLLUTANT: N
IMDG CODE PAGE: 2147

CERCLA SECTIONS 102a/103 HAZARDOUS SUBSTANCES (40 CFR Part 302.4): This product is not reportable under 40 CFR Part 302.4.

SARA TITLE III SECTION 302 EXTREMELY HAZARDOUS SUBSTANCES (40 CFR Part 355): This product is not regulated under Section 302 of SARA and 40 CFR Part 355.

SARA TITLE III SECTION 311/312 HAZARDOUS CATEGORIZATION (40 CFR Part 370):
ACUTE: Y
CHRONIC: N
FIRE: Y
REACTIVE: N
SUDDEN RELEASE: Y

SARA TITLE III SECTION 313 (40 CFR Part 372): This product is not regulated under Section 313 of SARA and 40 CFR Part 372.

STATE REGULATIONS:
California Proposition 65: N

TSCA INVENTORY STATUS: Listed on inventory.

OSHA HAZARD COMMUNICATION STANDARD: Flammable gas. Compressed gas.
Contains a hazardous component. See the Toxicological Infonnation section for health hazards that the OSHA Standard attributes to this product. Contains a component listed by OSHA.

Contains a component listed by ACGIH.

EC INVENTORY (EINECS/ELINCS): In compliance.
JAPAN INVENTORY (MITI): Listed on inventory.
AUSTRALIA INVENTORY (AICS): Listed on inventory.
KOREA INVENTORY (ECL): Listed on inventory.
CANADA INVENTORY (DSL): Listed on inventory.
PHILIPPINE INVENTORY (PICCS): Not determined.
CHINA INVENTORY (IECS): Not determined.

SUPPLEMENTAL INFORMATION: This product contains a chemical listed by the State of New Jersey. This product contains a chemical listed by the State of Pennsylvania.

Ethyl mercaptan is the preferred warning agent in liquid propane applications. This is because, in addition to meeting NFPA #58 guidelines for odorization of LP-gases, its liquid/gas equilibrium properties more closely match that of propane, and it has a higher odor intensity at lower concentrations when compared to other odorizing agents. Ethyl mercaptan was first chosen as a viable warning agent in a study by the U.S. Bureau of Mines in 1931, and later confirmed in independent studies by the U.S. Energy Research and Development Administration (ERDA) in
1997.

Although ethyl mercaptan has excellent warning properties, NFPA #58 A- 1-4.1.1 states, "It is recognized that no odorant will be completely effective as a warning agent in every circumstance." Studies conducted by Gas Research Institute (GRI), Institute of Gas Technology (IGT), Bartlesville Energy Technology Center, Natural Gas Odorizing, Inc., and others, highlight instances where odorants may not be as effective. For example, it has been reported that odor fading caused by chemical oxidation*, adsorption, and absorption can occur in vessels and distribution systems carrying odorized propane. In an underground leak, the odorant may be absorbed by the soil as the gas passes through to the soil to the surface. In a basement, the odorant may be absorbed by masonry surfaces. Extreme cold weather may also reduce the effectiveness of the odorant. It has also been reported that being exposed to an odor for a period of time may affect a person's ability to detect that odor. Other odors in anarea, such as a musty basement may mask or cover up the LP Gas odor.

CHEMICAL OXIDATION: Contact with air (oxygen), rust, or other oxidation agents over a period of time can result in odorant fading. Chemical oxidation is most likely to occur in newly installed tanks and in rusty, wet, or improperly prepared tank. For this reason, it is extremely important for propane tanks to be properly purged, especially when the tank is new or has been allowed to run empty, thus allowing potential air or water contamination.

This Material Safety Data Sheet conforms to the requirements of ANSI Z400. 1.

This Material Safety Data Sheet and the information it contains is offered to you in good faith as accurate. We have reviewed any information contained in this data sheet which we received from sources outside our company. We believe that information to be correct but cannot guarantee its accuracy or completeness. Health and safety precautions in this data sheet may not be adequate for all individuals and/or situations. It is the user's obligation to evaluate and use this product safely and to comply with all applicable laws and regulations. No statement made in this data sheet shall be construed as a permission of recommendation for the use of any product in a manner that might infringe existing patents. No warranty is made, either express or implied.

ETHYL MERCAPTAN

In order to detect its presence and prevent an explosion of built up propane gas, odorant (usually ethyl mercaptan) is added to liquid gas. Ethyl Mercaptan is normally used to stench propane because it is chemically stable when mixed with propane and has many of the same physical characteristics. It has a very distinct odor and has a fast odor impact which makes it easier to detect a leak. To familiarize yourself with this distinctive odor, you can request "Scratch and Sniff' leaflets from Brick Propane, Inc., 721 5 State St, Aberdeen, SD 57401

WARNING

Under certain circumstances, not everyone can smell ethyl mercaptan. Som people simply cannot smell certain odors, including ethyl mercaptan. Physical conditions such as competing odors, common colds and allergies, smoking, eating, etc. temporarily may lessen a person's ability to smell. Additionally, high concentrations of odorous substances, including ethyl mercaptan, temporarily may shock, or essentially paralyze, a person's sense of smell. Cold weather also may have a negative effect: it reduces volatility, which may lower the ratio of mercaptan in the air, and may impair the sense of smell.

Some odorants, such as ethyl mercaptan, can oxidize under certain circumstances; oxidation diminishes the chance that a leak will be detected. Also, the odorant may be adsorbed by surfaces under certain conditions (for example, movement of the gas through soil diminishes the distinctive odor). Oxidation can occur if the ethyl mercaptan comes into contact with oxidizing compounds, such as rust (iron oxide).

Oxidation may result in the partial "fading" of the perceived gassy smell of odorized propane. "Fading" has been demonstrated to occur in tanks containing rust. Because oxygen and water can form rust, it is important that all propane containers be purged of air and moisture before use and that the internal tank surface be made passive to neutralize any existing rust.

Despite these limitations, Ethyl Mercaptan remains the best odorant yet discovered for L.P. Gas. According to the Gas Processors Association 4 year study into the behavior of odorants in L.P. Gas, "its physical properties and high olfactory impact are superior in every way to those of other odorants tested".

LIQUEFIED PETROLEUM GAS, 2.1, UN1075 DANGER!
EXTREMELY FLAMMABLE

POTENTIAL HAZARDS
FIRE OR EXPLOSION:

· EXTREMELY FLAMMABLE: Will be easily ignited by heat, sparks or flames. Will form explosive mixtures with air. Vapors from liquefied gas are initially heavier than air and spread along ground. Vapors may travel to source of ignition and flash back. Container may explode when heated. Ruptured cylinders may rocket.

· HEALTH: Vapors may cause dizziness or asphyxiation without warning. Some may be irritating if inhaled at high concentrations. Contact with gas or liquefied gas may cause burns, severe injury and/or frostbite. Fire may produce irritating and/or toxic gases.

· PUBLIC SAFETY: Call customer Emergency Response Telephone Number on Shipping Paper first. If shipping paper not available or no answer, call PERS at 1-800-633-8253. Isolate spill or leak area immediately for at least 50 to 100 meters (160 to 330 feet) in all directions. Keep unauthorized personnel away. Stay upwind. Many gases are heavier than air and will spread along ground and collect in low or confined areas (sewers, basement, tanks). Keep out of low areas.

· PROTECTIVE CLOTHING: Wear positive pressure self-contained breathing apparatus (SCBA). Structural firefighters' protective clothing will only provide limited protection. Always wear thermal protective clothing when handling refrigerated/cryogenic liquids.

· EVACUATION:

Large spill: Consider initial downwind evacuation for at least 800 meters (1/2 mile).

Fire: If tank, rail car or tank truck is involved in a fire, isolate for 1600 meters (1 mile) in all directions, also consider initial evacuation for 1600 meters (1 mile) in all directions.

· EMERGENCY RESPONSE: DO NOT EXTINGUISH A LEAKING GAS FIRE UNLESS LEAK CAN BE STOPPED.

FIRE:

Small Fires: Dry Chemical or C02

Large Fires: Water spray or fog. Move container from fire areas if you can do it without risk.

Fire Involving Tanks: Fight fire from maximum distance or use unmanned hose holders or monitor nozzles. Cool containers with flooding quantities of water until well after fire is out. Do not direct water at source of leak or safety devices, icing may occur. Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank. ALWAYS stay away from the ends of tanks. For massive fire, use unmanned hose holders or monitor nozzles. If this is impossible, withdraw from area and let fire burn.

· SPILL OR LEAK: ELIMINATE all ignition sources (no smoking, flares, sparks or flames in immediate area). All equipment used when handling the product must be grounded. Do not touch or walk through spilled material. Stop leak if you can do it without risk. If possible, turn leaking containers so that gas escapes rather than liquid. Use water spray to reduce vapors or divert vapor cloud drift. Do not direct water at spill or source of leak. Prevent spreading of vapors through sewers, ventilation systems, and confined areas. Isolate area until gas has dispersed.

CAUTION: When in contact with refrigerated/cryogenic liquids, many materials become brittle and are likely to break without warning.

· FIRST AID: Move victim to fresh air. Call emergency medical care. Apply artificial respiration if victim is not breathing. Administer oxygen if breathing is difficult. Remove and isolate contaminated clothing and shoes. Clothing frozen to the skin should be thawed before being removed. In case of contact with liquefied gas, thaw frosted parts in lukewarm water. Keep victim warm and quiet. Ensure that medical personnel are aware of the material(s) involved and take precautions to protect themselves.

Source: U.S. Department of Transportation, Emergency Response Guidebook, Guide 115 for lID No UN 1075, Liquefied Petroleum Gas.