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MSDS Material Safety Data Sheet
CAS

74-98-6 75-28-5 78-78-4 115-07-1 106-97-8 109-66-0 110-54-3 106-98-9 115-11-7 624-64-6 590-18-1 106-99-0 7783-06-4

File Name: 74-98-6_75-28-5_78-78-4_115-07-1_106-97-8_109-66-0_110-54.asp

                               MATERIAL SAFETY DATA SHEET

Off-Spec LPG Mix
VALERO MARKETING & SUPPLY COMPANY
and Affiliates
P.O. Box 696000
San Antonio, TX 78269-6000
Emergency Phone Numbers General Assistance
24 Hour Emergency: 866-565-5220 General Assistance: 210-345-4593
Chemtrec Emergency: 800-424-9300
BRAND NAMES: Valero, Diamond Shamrock, Shamrock, Ultramar, Beacon, Total


Section 1. Chemical Product and Company Identification
: Off-Spec LPG Mix
Common / Trade name
: LPG, Propane-Butane Mixture, Raw LPG
Synonym
SYNONYMS/COMMON NAMES: This Material Safety Data Sheet applies to the listed products and synonym descriptions
for Hazard Communication purposes only. Technical specifications vary greatly depending on the product and are not
reflected in this document. Consult specification sheets for technical information. This product contains ingredients that
are considered to be hazardous as defined by the OSHA Hazard Communication Standard (29 CFR 1910.1200).
: This product is intended for use as a refinery feedstock, fuel, or for use in engineered
Material uses
processes. Use in other applications may result in higher exposures and require
additional controls, such as local exhaust ventilation and personal protective equipment.
: 306a
MSDS #

Section 2. Hazards Identification
Danger! Product May Contain or Release Hydrogen Sulfide. H2S is a highly toxic, highly flammable gas which can be fatal if
inhaled at certain concentrations.
Danger! Contains Butadiene. Cancer Hazard. Butadiene has been shown to cause cancer in laboratory animals. Extremely
Flammable. Compressed Gas. Narcotic and asphyxiant in high concentrations. Gas or vapor reduces oxygen available for
breathing and may cause suffocation. Contact with liquid causes burns similar to frostbite. Wear insulated gloves if contact
with liquid cooled equipment is expected. Avoid liquid, mist and vapor contact. Vapors may explode
: Gas. (COLORLESS, NONCORROSIVE, LIQUEFIED COMPRESSED GAS WITH A
Physical state
WEAK ODOR; MAY HAVE SKUNK ODOR ADDED.)
: Danger!
Emergency overview
CANCER HAZARD - CONTAINS MATERIAL WHICH CAN CAUSE CANCER.
VAPORS MAY CATCH FIRE AND EXPLODE.
MAY CATCH FIRE AND EXPLODE.
FLAMMABLE GAS.
CONTENTS UNDER PRESSURE.
CAUSES SKIN IRRITATION.
CAUSES DAMAGE TO THE FOLLOWING ORGANS: NERVOUS SYSTEM.
CONTAINS MATERIAL WHICH CAUSES DAMAGE TO THE FOLLOWING ORGANS:
HEART, CENTRAL NERVOUS SYSTEM, MUSCLE TISSUE.
VAPOR MAY CAUSE FLASH FIRE.
Do not ingest. Avoid shock and friction. Extremely hazardous liquid and vapor under
pressure. Do not puncture or incinerate container. Wash thoroughly after handling. Risk
of cancer depends on duration and level of exposure.
: Dermal contact. Eye contact. Inhalation. Ingestion.
Routes of entry

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Potential acute health effects
: May cause severe irritation, redness, tearing, blurred vision and conjunctivitis. Contact
Eyes
with compressed liquid may cause permanent damage and frost burns.
: Extreme overexposure to very high concentrations may cause mild skin irritation.
Skin
Contact with compressed liquid may cause skin to freeze or frost burns.
: Simple asphyxiant. Nasal and respiratory tract irritation, central nervous system effects
Inhalation
including excitation, euphoria, contracted eye pupils, dizziness, drowsiness, blurred
vision, fatigue, nausea, headache, loss of reflexes, tremors, convulsions, seizures, loss
of consciousness, coma, respiratory arrest and sudden death could occur as a result of
long term and/or high concentration exposure to vapors. May also cause anemia and
irregular heart rhythm.
: This product may cause freeze burns to the mucous membranes. May cause harmful
Ingestion
central nervous system effects, similar to those listed under "inhalation".
: Preexisting eye, skin, heart, central nervous system and respiratory system disorders
Medical conditions
may be aggravated by exposure to this product. Components have been shown to be
aggravated by over-
weak cardiac sensitizers which can result in cardiac arrhythmia and ventricular
exposure
fibrillation.
: Simple asphyxiant. Nasal and respiratory tract irritation, central nervous system effects
Over-exposure
including excitation, euphoria, contracted eye pupils, dizziness, drowsiness, blurred
signs/symptoms
vision, fatigue, nausea, headache, loss of reflexes, tremors, convulsions, seizures, loss
of consciousness, coma, respiratory arrest and sudden death could occur as a result of
long term and/or high concentration exposure to vapors. May also cause anemia and
irregular heart rhythm.
See toxicological information (section 11)

Section 3. Composition, information on ingredients
Name CAS number Concentration ( % )
Propane 74-98-6 0 - 25
iso-Butane 75-28-5 0 - 20
iso-Pentane 78-78-4 0 - 20
Propylene 115-07-1 0 - 15
Butane 106-97-8 0 - 15
Pentane 109-66-0 0 - 10
n-Hexane 110-54-3 0-5
1-Butene 106-98-9 0-5
iso-Butylene 115-11-7 0-5
trans-Butene-2 624-64-6 0-5
cis-Butene-2 590-18-1 0-5
1,3-Butadiene 106-99-0 0 - 0.3
Hydrogen Sulfide 7783-06-4 <0.05

Section 4. First Aid Measures
: Remove the victim from the source of contamination. Open eyelids to let the product
Eye contact
evaporate, then flush immediately with large amounts of water for at least 15 minutes.
Eyelids should be held away from the eyeball to ensure thorough rinsing. Seek medical
advice if pain or redness continues. If the victim cannot tolerate light, protect his eyes
with a bandage or handkerchief.
: For exposure to liquid, slowly rewarm frostbitten part with lukewarm water. In case of
Skin contact
massive exposure, remove clothing while showering with lukewarm water. Call a
physician. Remove contaminated clothing promptly and launder before reuse.
: If inhaled, remove to fresh air. If breathing is difficult, give oxygen. If not breathing, give
Inhalation
artificial respiration. Get medical attention.
: This product is a gas at normal temperatures and pressures. Never give anything by
Ingestion
mouth to an unconscious person. DO NOT induce vomiting. Keep person warm and
quiet. SEEK IMMEDIATE MEDICAL ATTENTION.
: No specific treatment. Treat symptomatically. Contact poison treatment specialist
Notes to physician
immediately if large quantities have been ingested or inhaled.



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: No action shall be taken involving any personal risk or without suitable training. If it is
Protection of first-aiders
suspected that fumes are still present, the rescuer should wear an appropriate mask or
self-contained breathing apparatus. It may be dangerous to the person providing aid to
give mouth-to-mouth resuscitation. Wash contaminated clothing thoroughly with water
before removing it, or wear gloves.

Section 5. Fire Fighting Measures
: Flammable.
Flammability of the product
: 434.85癈 (814.7癋)
Auto-ignition temperature
: Lower: 1%
Flammable limits
Upper: 9.5%
: Combustion may produce carbon monoxide, carbon dioxide and reactive hydrocarbons
Products of combustion
(aldehydes, aromatics, etc.).
Fire-fighting media and instructions
Extinguishing media
: Use an extinguishing agent suitable for the surrounding fire.
Suitable
: None known.
Not suitable
Extremely Flammable. Do not extinguish fire due to probable explosive reignition. Shut
off source of flow, if possible. Use appropriate extinguishing media for any secondary
fires. Small fires can be extinguished with dry chemical or carbon dioxide. Water can be
used to cool fire-exposed containers, structures and to protect personnel. If a leak or
spill has not ignited, ventilate area and use water spray to disperse gas or vapor and to
protect personnel attempting to stop a leak. Do not flush down public sewers.
Risk of explosion by shock, friction, fire or other sources of ignition.
: Fire-fighters should wear appropriate protective equipment and self-contained
Special protective
breathing apparatus (SCBA) with a full face-piece operated in positive pressure mode.
equipment for fire-
Fire-fighters' protective clothing will only provide limited protection. Dangerous when
fighters
exposed to heat or flame. Vapors form flammable or explosive mixtures with air at
room temperature. Vapor or gas may spread to distant ignition sources (pilot lights,
welding equipment, electrical equipment, etc.) and flash back. Vapors may accumulate
in low areas. Vapors may concentrate in confined areas. Flowing product can be
ignited by self generated static electricity. Use adequate bonding and grounding to
prevent static buildup. Runoff to sewer may cause fire or explosion hazard. Containers
may explode in heat of fire. Irritating or toxic substances may be emitted upon thermal
decomposition. For fires involving this material, do not enter any enclosed or confined
space without proper protective equipment, which should include NIOSH approved self-
contained breathing apparatus with full face mask. Clothing, rags or similar organic
material contaminated with this product and stored in a closed space may undergo
spontaneous combustion. Transfer to and from commonly bonded and grounded
containers.


: FLAMMABLE.
Special remarks on fire
hazards

Section 6. Accidental Release Measures
: Immediately contact emergency personnel. Eliminate all ignition sources. Keep
Personal precautions
unnecessary personnel away. Use suitable protective equipment (section 8). Do not
touch or walk through spilled material.
: If facility or operation has an "oil or hazardous substance contingency plan", activate its
Environmental precautions
procedures. Stay upwind and away from spill. Wear appropriate protective equipment
including respiratory protection as conditions warrant. Do not enter or stay in area
unless monitoring indicates that it is safe to do so. Isolate hazard area and restrict entry
to emergency crew. Extremely flammable. Review Fire Fighting Measures section
before proceeding with clean up. Keep all sources of ignition (flames, smoking, flares,
etc.) and hot surfaces away from release. Contain spill in smallest possible area.
Recover as much product as possible (e.g., by vacuuming). Stop leak if it can be done
without risk. Use water spray to disperse vapors. Spilled material may be absorbed by
an appropriate absorbent, and then handled in accordance with environmental
regulations. Prevent spilled material from entering sewers, storm drains, other

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unauthorized treatment or drainage systems and natural waterways. Contact fire
authorities and appropriate federal, state and local agencies. If spill of any amount is
made into or upon navigable waters, the contiguous zone, or adjoining shorelines,
contact the National Response Center at 800-424- 8802. For highway or railway spills,
contact Chemtrec at 800-424-9300.

Methods for cleaning up
: Immediately contact emergency personnel. Stop leak if without risk. Use spark-proof
Small spill
tools and explosion-proof equipment.
: Gas or Liquefied Gas spills need to be contained and the source of the leak needs to be
Large spill
stopped if possible by trained emergency responders. Residual released material will
vapor off quickly.

Section 7. Handling and Storage
: Do not ingest. Avoid shock and friction. To avoid fire or explosion, dissipate static
Handling
electricity during transfer by grounding and bonding containers and equipment before
transferring material. Use explosion-proof electrical (ventilating, lighting and material
handling) equipment. Extremely hazardous liquid and vapor under pressure. Do not
puncture or incinerate container. Wash thoroughly after handling. Use good personal
hygiene practices. After handling this product, wash hands before eating, drinking, or
using toilet facilities.
: Store in a segregated and approved area. Keep container in a cool, well-ventilated area.
Storage
Keep container tightly closed and sealed until ready for use. Avoid all possible sources
of ignition (spark or flame).

Section 8. Exposure controls, personal protection
: Use only with adequate ventilation. Use process enclosures, local exhaust ventilation or
Engineering measures
other engineering controls to keep worker exposure to airborne contaminants below any
recommended or statutory limits. The engineering controls also need to keep gas, vapor
or dust concentrations below any lower explosive limits. Use explosion-proof ventilation
equipment.
Personal protection
: Safety eyewear complying with an approved standard should be used when a risk
Eyes
assessment indicates this is necessary to avoid exposure to liquid splashes, mists or
dusts.
: Personal protective equipment for the body should be selected based on the task being
Skin
performed and the risks involved and should be approved by a specialist before handling
this product. Flame Retardant Clothing is recommended.
: Use a properly fitted, air-purifying or air-fed respirator complying with an approved
Respiratory
standard if a risk assessment indicates this is necessary.Respirator selection must be
based on known or anticipated exposure levels, the hazards of the product and the safe
working limits of the selected respirator.
: Chemical-resistant, impervious gloves complying with an approved standard should be
Hands
worn at all times when handling chemical products if a risk assessment indicates this is
necessary.
: Consult your Supervisor or S.O.P. for special handling directions.
Personal protective
equipment (Pictograms)




: Splash goggles. Full suit. Vapor respirator. Boots. Gloves. Self-contained breathing
Personal protection in case
apparatus (SCBA) should be used to avoid inhalation of the product. Suggested
of a large spill
protective clothing might not be adequate. Consult a specialist before handling this
product.
: If this product contains ingredients with exposure limits, personal, workplace atmosphere
Recommended monitoring
or biological monitoring may be required to determine the effectiveness of the ventilation
procedures
or other control measures and/or the necessity to use respiratory protective equipment.

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: Wash hands, forearms and face thoroughly after handling chemical products, before
Hygiene measures
Environmental exposure eating, smoking and using the lavatory and at the end of the working period. Appropriate
controls techniques should be used to remove potentially contaminated clothing. Wash
contaminated clothing before reusing. Ensure that eyewash stations and safety showers
are close to the workstation location.
: Emissions from ventilation or work process equipment should be checked to ensure they
comply with the requirements of environmental protection legislation. In some cases,
fume scrubbers, filters or engineering modifications to the process equipment will be
necessary to reduce emissions to acceptable levels.
Component Exposure limits
Propane ACGIH TLV (United States, 1/2004). Notes: ACGIH 2004 Adoption
TWA: 1000 ppm 8 hour(s). Form: All forms

NIOSH REL (United States, 6/2001).
TWA: 1000 ppm 10 hour(s). Form: All forms
iso-Butane ACGIH TLV (United States, 1/2004). Notes: ACGIH 2004 Adoption
TWA: 1000 ppm 8 hour(s). Form: All forms

NIOSH REL (United States, 6/2001).
TWA: 800 ppm 10 hour(s). Form: All forms
iso-Pentane ACGIH TLV (United States, 1/2005). Notes: 1998 Adoption.
TWA: 600 ppm 8 hour(s). Form: All forms
Butane ACGIH TLV (United States, 1/2004). Notes: ACGIH 2004 Adoption
TWA: 1000 ppm 8 hour(s). Form: All forms

NIOSH REL (United States, 6/2001).
TWA: 800 ppm 10 hour(s). Form: All forms
Propylene ACGIH TLV (United States, 1/2004).
TWA: 500 ppm 8 hour(s).
Pentane ACGIH TLV (United States, 9/2004). Notes: 1998 Adoption.
TWA: 600 ppm 8 hour(s). Form: All forms



NIOSH REL (United States, 6/2001).
CEIL: 610 ppm 15 minute(s). Form: All forms
TWA: 120 ppm 10 hour(s). Form: All forms
OSHA PEL (United States, 6/1993).
TWA: 1000 ppm 8 hour(s). Form: All forms
n-Hexane OSHA PEL (United States, 6/1993).
TWA: 500 ppm 8 hour(s). Form: All forms
ACGIH TLV (United States, 9/2004). Skin
TWA: 50 ppm 8 hour(s). Form: All forms
NIOSH REL (United States, 6/2001).
TWA: 50 ppm 10 hour(s). Form: All forms
1,3-Butadiene ACGIH TLV (United States, 9/2004). Notes: Substance identified by other sources as a
suspected or confirmed human carcinogen. 1994-1995 Adoption Substances for
which the TLV is higher than the OSHA Permissible Exposure Limit (PEL) and/or the
NIOSH Recommended Exposure Limit (REL). See CFR 58(124) :36338-33351, June
30, 1993, for revised OSHA PEL. Refers to Appendix A -- Carcinogens.
TWA: 2 ppm 8 hour(s). Form: All forms
OSHA PEL (United States, 6/1993).
STEL: 5 ppm 15 minute(s). Form: All forms
TWA: 1 ppm 8 hour(s). Form: All forms
Hydrogen Sulfide ACGIH TLV (United States, 9/2004).
TWA: 10 ppm 8 hour(s). Form: All forms
STEL: 15 ppm 15 minute(s). Form: All forms
NIOSH REL (United States, 12/2001).
CEIL: 10 ppm 10 minute(s). Form: All forms
OSHA PEL Z2 (United States, 8/1997).
CEIL: 20 ppm Form: All forms
AMP: 50 ppm 10 minute(s). Form: All forms



Consult local authorities for acceptable exposure limits.




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Section 9. Physical and Chemical Properties
: Gas. (COLORLESS, NONCORROSIVE, LIQUEFIED COMPRESSED GAS WITH A
Physical state
WEAK ODOR; MAY HAVE SKUNK ODOR ADDED.)
: Colorless.
Color
: MILD, BUT COMMERCIAL LPG HAS A SKUNK-LIKE ODERANT ADDED AS A
Odor
WARNING
: Mixture
Molecular formula
: >-42.22癈 (-44癋)
Boiling point
: 0.51 (Water = 1)
Specific gravity
: 1.5 (Air = 1)
Vapor density
: Essentially 100%
Volatility
: 100 (%)
VOC
: N/A
Solubility

Section 10. Stability and reactivity data
: The product is stable.
Stability
: Will not occur.
Hazardous polymerization
: Avoid all possible sources of ignition (spark or flame). Do not pressurize, cut, weld,
Conditions to avoid
braze, solder, drill, grind or expose containers to heat or sources of ignition. Avoid
exposure - obtain special instructions before use.
: No specific data.
Materials to avoid
: Under normal conditions of storage and use, hazardous decomposition products should
Hazardous decomposition
not be produced.
products

Section 11. Toxicological Information
Toxicity data

LIQUIFIED PETROLEUM GAS acts as a simple asphyxiant, but may also cause central nervous system depression. Concentrations of 100,000 ppm may
be tolerated, but cause dizziness within a few minutes. No chronic systemic effect has been reported from occupational exposure to LPG.

BUTADIENE is a suspected human carcinogen, and can affect the body if it is inhaled or if the liquid comes in contact with the eyes or skin. The vapor is a
narcotic at very high concentrations, with mild irritant properties. Deep anesthesia was induced in rabbits in 8 to 10 minutes at 200,000 to 250,000 ppm,
and death occurred in 23 minutes at 250,000 ppm. Recovery from brief periods of anesthesia occurred within 2 minutes of terminating the exposure. No
tissue changes were detectable microscopically after daily induction of anesthesia as many as 34 times. Daily exposure of various small animal species at
6700 ppm over 8 months resulted in no significant chronic effects. Human subjects tolerated 8000 ppm for 8 hours without apparent effect, other than
slight irritation of the eyes and upper respiratory tract. No case of serious illness arising from its industrial use have been reported.

n-HEXANE can affect the body if it is inhaled, comes in contact with the eyes or skin, or is swallowed. Hexane vapor is a narcotic and a mild upper
respiratory irritant. Polyneuropathy (peripheral nerve damage) has been reported to occur in workers exposed to hexane vapors, characterized by
progressive weakness and numbness in the extremities, loss of deep tendon reflexes and reduction of motor nerve conduction velocity. Recovery ranges
from no recovery to complete recovery depending upon the duration of exposure and severity of nerve damage. Concentrations of 30,000 ppm produced
narcosis in mice within 30 to 60 minutes, convulsions and death occurred at 35,000 to 40,000 ppm, and at 64,000 ppm respiratory arrest was produced in
2.5 to 4.5 minutes from the start of exposure. Concentrations up to 8000 ppm produced no anesthesia. In human subjects, 2000 ppm for 10 minutes
produced no effects, but 5000 ppm resulted in dizziness and a sensation of giddiness. Other investigators reported slight nausea, headache and irritation
of the eyes and throat at 1400 to 1500 ppm. In industrial practice, mild narcotic symptoms such as dizziness have been observed when concentrations
exceeded 1000 ppm, but not below 500 ppm.

PENTANE can affect the body if it is inhaled, comes in contact with the eyes or skin, or is swallowed. The chief effects of inhalation are narcosis and
irritation of the respiratory passages. Exposures of 90,000 to 120,000 ppm resulted in narcosis in animals in 5 to 6 minutes, 130,000 ppm was fatal with
respiratory arrest occurring within 5 minutes of exposure. Pentane injected subcutaneously in rats produced temporary impairment of liver function and
moderate neutropenia. While other aliphatic hydrocarbons produce drowsiness and mild irritation of the eyes and nose in human subjects, no symptoms
resulted from exposure to pentane vapor for 10 minutes at 5000 ppm. Chronic exposure to high concentrations may lead to polyneuropathy (peripheral
nerve damage), characterized by progressive weakness and numbness in the extremities, loss of deep tendon reflexes and reduction of motor nerve
conduction velocity.


Acute toxicity
Product/ingredient name Result Species Dose
n-Hexane LD50 Oral Rat 25 g/kg
LDLo Intraperitoneal Rat 9100 mg/kg
TDLo Oral Rat 20000 mg/kg
Pentane LD50 Oral Rat >2000 mg/kg
1,3-Butadiene LD50 Oral Rat 5480 mg/kg

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: Not available.
Conclusion/Summary

Carcinogenicity
: Not available.
Conclusion/Summary
Classification
Product/ingredient name ACGIH IARC EPA NIOSH NTP OSHA
Propylene A4 3 - - - -
1,3-Butadiene A2 2A - + Proven. -
Mutagenicity
: Not available.
Conclusion/Summary
Teratogenicity
: Not available.
Conclusion/Summary
Reproductive toxicity
Conclusion/Summary : Not available.
: 2000 ppm
IDLH
Chronic effects on humans : CARCINOGENIC EFFECTS: Classified 1 (Proven for humans.) by European Union [iso-
Butane]. Classified 1 (Proven for humans.) by European Union [Butane]. Classified A4
(Not classifiable for humans or animals.) by ACGIH, 3 (Not classifiable for humans.) by
IARC [Propylene]. Classified 1 (Known to be human carcinogens.) by NTP, + (Proven.)
by NIOSH, 1 (Proven for humans.) by European Union [1,3-Butadiene]. Classified A2
(Suspected for humans.) by ACGIH, 2A (Probable for human.) by IARC [1,3-Butadiene].

MUTAGENIC EFFECTS: Classified 2 by European Union [iso-Butane]. Classified 2 by
European Union [Butane]. Classified 2 by European Union [1,3-Butadiene].
Contains material which may cause damage to the following organs: lungs, the nervous
system, peripheral nervous system, upper respiratory tract, skin, central nervous system
(CNS), eye, lens or cornea.
Other toxic effects on : Hazardous by the following route of exposure: of skin contact (irritant), of eye contact
humans (irritant), of ingestion, of inhalation.
Specific effects
: Contains material which may cause cancer, based on animal data. Risk of cancer
Carcinogenic effects
depends on duration and level of exposure.
: Contains material which may cause damage to the following organs: lungs, the nervous
Target organs
system, peripheral nervous system, upper respiratory tract, skin, central nervous system
(CNS), eye, lens or cornea.

Section 12. Ecological Information
Ecotoxicity data
Product/ingredient Result Species Exposure
name
n-Hexane Acute LC50 113000 ug/L Fresh water Fish - Mozambique tilapia - Tilapia mossambica 96 hours
Acute LC50 2500 to 2980 ug/L Fresh water Fish - Fathead minnow - Pimephales promelas 96 hours
: Not available.
Conclusion/Summary
Biodegradability
: Not available.
Conclusion/Summary
Biodegradability
: Not available.
Conclusion/Summary
: carbon oxides (CO, CO2) and water
Products of degradation
Toxicity of the products of : The products of biodegradation are less toxic than the original product.
biodegradation




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Section 13. Disposal Considerations
: Do not puncture or incinerate container. Disposal of this product, solutions and any by-
Waste disposal
products should at all times comply with the requirements of environmental protection
and waste disposal legislation and any regional local authority requirements.
Consult your local or regional authorities.

Section 14. Transport Information
Regulatory UN number Proper shipping Class Packing group Label Additional
information name information
UN1075 PETROLEUM 2.1 Not available.
DOT Classification Limited
GASES, LIQUEFIED quantity
FLAMMABLE GAS

Yes.
2




Packaging
instruction
Passenger
aircraft
Quantity
limitation:
Forbidden.

Cargo
aircraft
Quantity
limitation:
150 kg

Special
provisions
T50

UN1075 PETROLEUM 2.1 Not available.
TDG Classification Special
GASES, LIQUEFIED provisions
29, 42
2




Section 15. Regulatory Information
United States
: Flammable gas
HCS Classification
Compressed gas
Irritating material
Carcinogen
Target organ effects
: TSCA 4(a) final test rules: Pentane; n-Hexane
U.S. Federal regulations
TSCA 8(a) PAIR: Pentane
United States inventory (TSCA 8b): All components are listed or exempted.
TSCA 12(b) one-time export: Pentane
TSCA 12(b) annual export notification: n-Hexane
SARA 302/304/311/312 extremely hazardous substances: No products were found.
SARA 302/304 emergency planning and notification: No products were found.
SARA 302/304/311/312 hazardous chemicals: Propylene; Propane; iso-Butane;
Butane; Pentane; iso-Pentane; n-Hexane; iso-Butylene
SARA 311/312 MSDS distribution - chemical inventory - hazard identification:
Propylene: Fire hazard, Sudden release of pressure; Propane: Fire hazard, Sudden
release of pressure; iso-Butane: Fire hazard, Sudden release of pressure; Butane: Fire
hazard, Sudden release of pressure; Pentane: Fire hazard, Immediate (acute) health
hazard; iso-Pentane: Fire hazard; n-Hexane: Fire hazard, Immediate (acute) health
hazard, Delayed (chronic) health hazard; iso-Butylene: Fire hazard, Sudden release of
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pressure

Clean Water Act (CWA) 307: No products were found.
Clean Water Act (CWA) 311: No products were found.
Clean Air Act (CAA) 112 accidental release prevention: Propylene; Propane; iso-
Butane; Butane; 1,3-Butadiene; Pentane; iso-Pentane; 1-Butene; trans-Butene-2; cis-
Butene-2; Hydrogen Sulfide
Clean Air Act (CAA) 112 regulated flammable substances: Propylene; Propane; iso-
Butane; Butane; 1,3-Butadiene; Pentane; iso-Pentane; 1-Butene; trans-Butene-2; cis-
Butene-2
Clean Air Act (CAA) 112 regulated toxic substances: Hydrogen Sulfide
SARA 313
Product name CAS number Concentration
: Propylene 115-07-1 0 - 15
Form R - Reporting
n-Hexane 110-54-3 0-5
requirements
1,3-Butadiene 106-99-0 0 - 0.3
: Propylene 115-07-1 0 - 15
Supplier notification
n-Hexane 110-54-3 0-5
1,3-Butadiene 106-99-0 0 - 0.3
SARA 313 notifications must not be detached from the MSDS and any copying and redistribution of the MSDS shall
include copying and redistribution of the notice attached to copies of the MSDS subsequently redistributed.
: Connecticut Carcinogen Reporting: None of the components are listed.
State regulations
Connecticut Hazardous Material Survey: None of the components are listed.
Florida substances: None of the components are listed.
Illinois Chemical Safety Act: None of the components are listed.
Illinois Toxic Substances Disclosure to Employee Act: None of the components are
listed.
Louisiana Reporting: None of the components are listed.
Louisiana Spill: None of the components are listed.
Massachusetts Spill: None of the components are listed.
Massachusetts Substances: The following components are listed: LIQUIFIED
PETROLEUM GAS (L.P.G.); PROPANE; ISOBUTANE; ISOPENTANE; BUTANE;
PROPYLENE (PROPENE); PENTANE; HEXANE; 2-BUTENE-TRANS; 1-BUTENE;2-
BUTENE-CIS
Michigan Critical Material: None of the components are listed.
Minnesota Hazardous Substances: None of the components are listed.
New Jersey Hazardous Substances: The following components are listed:
LIQUEFIED PETROLEUM GAS; PROPANE; Isobutane; ISOPENTANE; BUTANE;
PROPYLENE; PENTANE; n-HEXANE;1,3-BUTADIENE
New Jersey Spill: None of the components are listed.
New Jersey Toxic Catastrophe Prevention Act: None of the components are listed.
New York Acutely Hazardous Substances: The following components are listed:
Hexane
New York Toxic Chemical Release Reporting: None of the components are listed.
Pennsylvania RTK Hazardous Substances: The following components are listed:
PETROLEUM GASES, LIQUEFIED; PROPANE; PROPANE, 2-METHYL-; BUTANE, 2-
METHYL-; BUTANE; 1-PROPENE; PENTANE; HEXANE; 2-BUTENE, (E)-; 1-BUTENE;
2-BUTENE, (Z)-;1,3-BUTADIENE
Rhode Island Hazardous Substances: None of the components are listed.

California Prop. 65
WARNING: This product contains a chemical known to the State of California to cause cancer and birth defects or other
reproductive harm.
Ingredient name Cancer Reproductive No significant risk Maximum
level acceptable dosage
level
1,3-Butadiene Yes. Yes. Yes. No.
Canada

Continued on next page
Off-Spec LPG Mix Page: 10/11

: Class A: Compressed gas.
WHMIS (Canada)
Class B-1: Flammable gas.
Class D-2A: Material causing other toxic effects (Very toxic).
CEPA DSL & NDSL: All materials are either listed or exempt
EU regulations
Hazard symbol or symbols




: R45- May cause cancer.
Risk phrases
R46- May cause heritable genetic damage.
R20- Also harmful by inhalation.
R52/53- Harmful to aquatic organisms, may cause long-term adverse effects in the
aquatic environment.
S53- Avoid exposure - obtain special instructions before use.
Safety phrases :
S2- Keep out of the reach of children.
S46- If swallowed, seek medical advice immediately and show this container or label.

Section 16. Other Information
: CANCER HAZARD - CONTAINS MATERIAL WHICH CAN CAUSE CANCER.
Label requirements
VAPORS MAY CATCH FIRE AND EXPLODE.
MAY CATCH FIRE AND EXPLODE.
FLAMMABLE GAS.
CONTENTS UNDER PRESSURE.
CAUSES SKIN IRRITATION.
CAUSES DAMAGE TO THE FOLLOWING ORGANS: NERVOUS SYSTEM.
CONTAINS MATERIAL WHICH CAUSES DAMAGE TO THE FOLLOWING ORGANS:
HEART, CENTRAL NERVOUS SYSTEM, MUSCLE TISSUE.
VAPOR MAY CAUSE FLASH FIRE.
1
Hazardous Material : Health
Information System (U.S.A.)
4
Fire hazard
0
Physical Hazard
Personal
protection
National Fire Protection :
4 Flammability
Association (U.S.A.)
Health 1 0 Instability
Specific hazard

Date of printing : 2/6/2008.
: 2/6/2008.
Date of issue
: 1.02
Version
Disclaimer
THIS MATERIAL SAFETY DATA SHEET ("MSDS") WAS PREPARED IN ACCORDANCE WITH 29 CFR 1910.1200 BY
VALERO MARKETING & SUPPLY CO., ("VALERO"). VALERO DOES NOT ASSUME ANY LIABILITY ARISING OUT OF
PRODUCT USE BY OTHERS. THE INFORMATION, RECOMMENDATIONS, AND SUGGESTIONS PRESENTED IN
THIS MSDS ARE BASED UPON TEST RESULTS AND DATA BELIEVED TO BE RELIABLE. THE END USER OF THE
PRODUCT HAS THE RESPONSIBILITY FOR EVALUATING THE ADEQUACY OF THE DATA UNDER THE CONDITIONS
OF USE, DETERMINING THE SAFETY, TOXICITY, AND SUITABILITY OF THE PRODUCT UNDER THESE
CONDITIONS, AND OBTAINING ADDITIONAL OR CLARIFYING INFORMATION WHERE UNCERTAINTY EXISTS. NO
GUARANTEE EXPRESSED OR IMPLIED IS MADE AS TO THE EFFECTS OF SUCH USE, THE RESULTS TO BE
OBTAINED, OR THE SAFETY AND TOXICITY OF THE PRODUCT IN ANY SPECIFIC APPLICATION. FURTHERMORE,
THE INFORMATION HEREIN IS NOT REPRESENTED AS ABSOLUTELY COMPLETE, SINCE IT IS NOT PRACTICABLE
TO PROVIDE ALL THE SCIENTIFIC AND STUDY INFORMATION IN THE FORMAT OF THIS DOCUMENT, PLUS
ADDITIONAL INFORMATION MAY BE NECESSARY UNDER EXCEPTIONAL CONDITIONS OF USE, OR BECAUSE OF
APPLICABLE LAWS OR GOVERNMENT REGULATIONS.


Continued on next page
Off-Spec LPG Mix Page: 11/11


Definitions of Material Safety Data Sheet Terminology
GOVERNMENT AGENCIES AND PRIVATE ASSOCIATIONS
ACGIH - American Conference of Governmental Industrial Hygienists, (private association)
DOT - United States Department of Transportation
EPA - United States Environmental Protection Agency
IARC - International Agency for Research on Cancer, (private association)
NFPA - National Fire Protection Association, (private association)
MSHA - Mine Safety and Health Administration, U.S. Department of Labor
NIOSH - National Institute of Occupational Safety and Health, U.S. Department of Health and Human Services
NTP - National Toxicology Program, (private association)
OSHA - Occupational Safety and Health Administration, U.S. Department of Labor
WHMIS- Workplace Hazardous Material Information System
CSA- Canadian Standards Association

HAZARD AND EXPOSURE INFORMATION
Acute Hazard - An adverse health effect which occurs rapidly as a result of short term exposure.
CAS # - American Chemical Society's Chemical Abstract service registry number which identifies the product and/or
ingredients.
Ceiling - The concentration that should not be exceeded during any part of the working exposure
Chronic Hazard - An adverse health effect which generally occurs as a result of long term exposure or short term
exposure with delayed health effects and is of long duration
Fire Hazard - A material that poses a physical hazard by being flammable, combustible, phyrophoric or an oxidizer as
defined by 29 CFR 1910.1200
Hazard Class - DOT hazard classification
Hazardous Ingredients - Names of ingredients which have been identified as health hazards
IDLH- Immediately Dangerous to Life and Health, the airborne concentration below which a person can escape without
respiratory protection and exposure up to 30 minutes, and not suffer debilitating or irreversible health effects. Established
by NIOSH.
mg/m3 - Milligrams of contaminant per cubic meter of air, a mass to volume ratio
N/A - Not available or no relevant information found
NA - Not applicable
PEL - OSHA permissible exposure limit; an action level of one half this value may be applicable
ppm - Part per million (one volume of vapor or gas in one million volumes of air)
Pressure Hazard - A material that poses a physical hazard due to the potential of a sudden release of pressure such as
explosive or a compressed gas as defined by 29 CFR 1910.1200
Reactive Hazard - A material that poses a physical hazard due to the potential to become unstable reactive, water reactive
or that is an organic peroxide as defined by 29 CFR 1910.1200.
STEL - The ACGIH Short-Term Exposure Limit, a 15-minute Time-Weighted Average exposure which should not be
exceeded at any time during a workday, even if the 8-hour TWA is less than the TLV.
TLV - ACGIH Threshold Limit Value, represented herein as an 8-hour TWA concentration.
8-hour TWA - The time weighted average concentration for a normal 8-hour workday and a 40-hour workweek, to which
nearly all workers may be repeatedly exposed, day after day, without adverse effect.
LD50 ?Single dose of a substance that, when administered by a defined route in an animal assay, is expected to cause the
death of 50% of the defined animal population.
LC50 - The concentration of a substance in air that, when administered by means of inhalation over a specified length of
time in an animal assay, is expected to cause the death of 50% of a defined animal population.

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