Section 2 - Composition, Information on Ingredients

CAS#	Chemical Name	Percent	EINECS/ELINCS
109-66-0	n-Pentane	>98%	203-692-4

Section 3 - Hazards Identification

Not available. Appearance: APHA: 5 max clear liquid. Flash Point: -49 deg C.
Not available.
Target Organs: Central nervous system, respiratory system, eyes, skin.


Potential Health Effects
Eye: Causes eye irritation. Causes redness and pain.
Skin: Causes skin irritation. Repeated or prolonged exposure may cause drying and cracking of the skin. Skin contact can cause brown stains in the area, and possible hardening of the outer skin
Ingestion: Aspiration hazard. May cause irritation of the digestive tract. Symptoms may include: headache, excitement, fatigue, nausea, vomiting, stupor, and coma. May cause central nervous system depression, characterized by excitement, followed by headache, dizziness, drowsiness, and nausea. Advanced stages may cause collapse, unconsciousness, coma and possible death due to respiratory failure. Aspiration of material into the lungs may cause chemical pneumonitis, which may be fatal. May cause lung damage.
Inhalation: Inhalation of high concentrations may cause central nervous system effects characterized by nausea, headache, dizziness, unconsciousness and coma. May cause respiratory tract irritation. Inhalation of vapors may cause drowsiness and dizziness.
Chronic: Prolonged or repeated skin contact may cause defatting and dermatitis.

Section 4 - First Aid Measures

Eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.
Skin: Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists.
Ingestion: Do not induce vomiting. Get medical aid immediately. Wash mouth out with water.
Inhalation: Get medical aid immediately. Remove from exposure and move to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
Notes to Physician: Treat symptomatically and supportively.

Section 5 - Fire Fighting Measures

General Information: Containers can build up pressure if exposed to heat and/or fire. As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Vapors can travel to a source of ignition and flash back. Extremely flammable liquid and vapor. Vapor may cause flash fire.
Extinguishing Media: Use water spray to cool fire-exposed containers. Use foam, dry chemical, or carbon dioxide. Water may be ineffective. This material is lighter than water and insoluble in water. The fire could easily be spread by the use of water in an area where the water cannot be contained.
Flash Point: -49 deg C ( -56.20 deg F)
Autoignition Temperature: 260 deg C ( 500.00 deg F)
Explosion Limits, Lower:1.4 Vol %
Upper: 8 Vol %
NFPA Rating: (estimated) Health: 1; Flammability: 4; Instability: 0

Section 6 - Accidental Release Measures

General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks: Absorb spill with inert material (e.g. vermiculite, sand or earth), then place in suitable container. Scoop up with a nonsparking tool, then place into a suitable container for disposal. Use water spray to disperse the gas/vapor. Remove all sources of ignition. Do not let this chemical enter the environment.

Section 7 - Handling and Storage

Handling: Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Do not get on skin or in eyes. Do not ingest or inhale.
Storage: Keep away from heat, sparks, and flame. Store in a tightly closed container. Keep from contact with oxidizing materials. Store in a cool, dry, well-ventilated area away from incompatible substances. Flammables-area.

Section 8 - Exposure Controls, Personal Protection

Engineering Controls: Use adequate general or local exhaust ventilation to keep airborne concentrations below the permissible exposure limits. Ventilation fans and other electrical service must be non-sparking and have an explosion-proof design.
Exposure Limits

Chemical Name	ACGIH	NIOSH	OSHA - Final PELs
n-Pentane	600 ppm TWA	120 ppm TWA; 350 mg/m3 TWA 1500 ppm IDLH	1000 ppm TWA; 2950 mg/m3 TWA

OSHA Vacated PELs: n-Pentane: 600 ppm TWA; 1800 mg/m3 TWA
Personal Protective Equipment
Eyes: Not available.
Skin: Wear neoprene gloves, apron, and/or clothing. Wear natural rubber gloves, apron, and/or clothing.
Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators: Follow the OSHA respirator regulations found in 29 CFR 1910.134 or European Standard EN 149. Use a NIOSH/MSHA or European Standard EN 149 approved respirator if exposure limits are exceeded or if irritation or other symptoms are experienced.

Section 9 - Physical and Chemical Properties

Physical State: Clear liquid
Appearance: APHA: 5 max
Odor: Not available.
pH: Not available.
Vapor Pressure: 573mbar @20 deg C
Vapor Density: Not available.
Evaporation Rate:Not available.
Viscosity: 0.25 mPa.s @20 deg C
Boiling Point: 36 deg C @760mmHg
Freezing/Melting Point:-130 deg C
Decomposition Temperature:Not available.
Solubility: Insoluble.
Specific Gravity/Density:0.626
Molecular Formula:C5H12
Molecular Weight:72.15

Section 10 - Stability and Reactivity

Chemical Stability: Stable at room temperature in closed containers under normal storage and handling conditions.
Conditions to Avoid: Incompatible materials, ignition sources.
Incompatibilities with Other Materials: Oxidizing agents.
Hazardous Decomposition Products: Carbon monoxide, carbon dioxide.
Hazardous Polymerization: Will not occur.

Section 11 - Toxicological Information

RTECS#:      
CAS# 109-66-0: RZ9450000
LD50/LC50:
CAS# 109-66-0:
     Inhalation, rat: LC50 = 364 gm/m3/4H;
     Oral, rat: LD50 = >2000 mg/kg;
.

Carcinogenicity:
CAS# 109-66-0: Not listed by ACGIH, IARC, NTP, or CA Prop 65.

Epidemiology: No information available.
Teratogenicity: No information available.
Reproductive Effects: No information available.
Mutagenicity: No information available.
Neurotoxicity: No information available.
Other Studies:

Section 12 - Ecological Information

Ecotoxicity: No data available. Fish toxicity: Coho salmon (96hr) no mortalities at 100 ppm in synthetic sea water at 8°C (Morrow,J.E. EPA-660/3-73-018, Jan 1974).
Environmental: Biodegradation 0% after 192 hr at 13°C; (initial concentration 0.11 µg/l) (Jamison,V.W. et al Biodegrad. of High-Octane Gasoline Proc. 3rd Int.Biograd.Symp. 1976, Appl.Sci.Publ.).Abiotic removal:31.4% photooxidised to CO2 by UV light in 24 hr in aqueous medium at 50°C (Knoevenagel,K. et al Arch.Environ.Contam.Toxicol. 1976, 4, 324-333).
Physical: No information available.
Other: No information available.

Section 13 - Disposal Considerations

Chemical waste generators must determine whether a discarded chemical is classified as a hazardous waste. US EPA guidelines for the classification determination are listed in 40 CFR Parts 261.3. Additionally, waste generators must consult state and local hazardous waste regulations to ensure complete and accurate classification.
RCRA P-Series: None listed.
RCRA U-Series: None listed.

Section 14 - Transport Information

	US DOT	Canada TDG
Shipping Name:	PENTANES	PENTANES
Hazard Class:	3	3
UN Number:	UN1265	UN1265
Packing Group:	II	II

Section 15 - Regulatory Information

US FEDERAL

TSCA
     CAS# 109-66-0 is listed on the TSCA inventory.
Health & Safety Reporting List
     None of the chemicals are on the Health & Safety Reporting List.
Chemical Test Rules
     CAS# 109-66-0: Testing required by manufacturers, processors
Section 12b
     CAS# 109-66-0: Section 4
TSCA Significant New Use Rule
     None of the chemicals in this material have a SNUR under TSCA.
CERCLA Hazardous Substances and corresponding RQs
     None of the chemicals in this material have an RQ.
SARA Section 302 Extremely Hazardous Substances
     None of the chemicals in this product have a TPQ.
SARA Codes
     CAS # 109-66-0: immediate, delayed, fire.
Section 313      No chemicals are reportable under Section 313.
Clean Air Act:
     This material does not contain any hazardous air pollutants.
     This material does not contain any Class 1 Ozone depletors.
     This material does not contain any Class 2 Ozone depletors.
Clean Water Act:
     None of the chemicals in this product are listed as Hazardous Substances under the CWA.
     None of the chemicals in this product are listed as Priority Pollutants under the CWA.
     None of the chemicals in this product are listed as Toxic Pollutants under the CWA.
OSHA:
     None of the chemicals in this product are considered highly hazardous by OSHA.
STATE
     CAS# 109-66-0 can be found on the following state right to know lists: California, New Jersey, Pennsylvania, Minnesota, Massachusetts.

California Prop 65

California No Significant Risk Level: None of the chemicals in this product are listed.

European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols:
     XN F+ N
Risk Phrases:
     R 12 Extremely flammable.
     R 51/53 Toxic to aquatic organisms, may cause long-term adverse
     effects in the aquatic environment.
     R 65 Harmful: may cause lung damage if swallowed.
     R 66 Repeated exposure may cause skin dryness or cracking.
     R 67 Vapours may cause drowsiness and dizziness.

Safety Phrases:
     S 16 Keep away from sources of ignition - No smoking.
     S 29 Do not empty into drains.
     S 33 Take precautionary measures against static discharges.
     S 9 Keep container in a well-ventilated place.
     S 61 Avoid release to the environment. Refer to special instructions
     /safety data sheets.

WGK (Water Danger/Protection)
     CAS# 109-66-0: 1
Canada - DSL/NDSL
     CAS# 109-66-0 is listed on Canada's DSL List.
Canada - WHMIS
     not available.
This product has been classified in accordance with the hazard criteria of the Controlled Products Regulations and the MSDS contains all of the information required by those regulations.
Canadian Ingredient Disclosure List
     CAS# 109-66-0 is listed on the Canadian Ingredient Disclosure List.

Section 16 - Additional Information

MSDS Creation Date: 10/16/1998
Revision #8 Date: 8/04/2005

The information above is believed to be accurate and represents the best information currently available to us. However, we make no warranty of merchantability or any other warranty, express or implied, with respect to such information, and we assume no liability resulting from its use. Users should make their own investigations to determine the suitability of the information for their particular purposes. In no event shall Fisher be liable for any claims, losses, or damages of any third party or for lost profits or any special, indirect, incidental, consequential or exemplary damages, howsoever arising, even if Fisher has been advised of the possibility of such damages.