Flash Point:<-40 F (<-40 C) (CC)
Autoignition Temp:500 F (260 C)
Lower Limits:1.4%
Upper Limits:7.8%
Extinguishing Media:regular dry chemical, carbon dioxide, water,
regular foam Large fires: Use regular foam or flood with fine water
spray.
Fire Fighting Procedures: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 burn. 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: Evacuation radius: 800 meters
(1/2 mile).
Unusual Fire/Explosion Hazard: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. Electrostatic
discharges may be generated by flow or agitation resulting in
ignition or explosion.

Spill Release Procedures:Avoid heat, flames, sparks and other sources
of ignition. Stop leak if possible without personal risk. Reduce
vapors with water spray. Small spills: Absorb with sand or other
non-combustible material. Collect spilled material in appropriate
container for disposal. Large spills: Dike for later disposal.
Remove sources of ignition. Keep unnecessary people away, isolate
hazard area and deny entry.
Neutralizing Agent:

Handling and Storage Precautions:Store and handle in accordance with
all current regulations and standards. Subject to storage
regulations: U.S. OSHA 29 CFR 1910.106. Grounding and bonding
required. See original container for storage recommendations. Keep
separated from incompatible substances.
Other Precautions:

Respiratory Protection:The following respirators and maximum use
concentrations are drawn from NIOSH and/or OSHA. 1200 ppm Any
supplied-air respirator. 1500 ppm Any supplied-air respirator. Any
self-contained breathing apparatus with a full facepiece. Any
supplied-air respirator with a full facepiece. Escape - Any
air-purifying respirator with a full facepiece and an organic vapor
canister. Any appropriate escape-type, self-contained breathing
apparatus. For Unknown Concentrations or Immediately Dangerous to
Life or Health - Any supplied-air respirator with full facepiece
and operated in a pressure-demand or other positive-pressure mode
in combination with a separate escape supply. Any self-contained
breathing apparatus with a full facepiece. Under conditions of
frequent use or heavy exposure, respiratory protection may be
needed. Respiratory protection is ranked in order from minimum to
maximum. Consider warning properties before use. Any chemical
cartridge respirator with organic vapor cartridge(s). Any chemical
cartridge respirator with a full facepiece and organic vapor
cartridge(s). Any air-purifying respirator with a full facepiece
and an organic vapor canister.
Ventilation:Ventilation equipment should be explosion-resistant if
explosive concentrations of material are present. Provide local
exhaust ventilation system. Ensure compliance with applicable
exposure limits.
Protective Gloves:Wear appropriate chemical resistant gloves.
Eye Protection:Wear splash resistant safety goggles. Provide an
emergency eye wash fountain and quick drench shower in the
immediate work area.
Other Protective Equipment:Wear appropriate chemical resistant
clothing.
Supplemental Safety and Health
PENTANE: 1000 ppm (2950 mg/m3) OSHA TWA 600 ppm (1770 mg/m3) OSHA TWA
(vacated by 58 FR 35338, June 30, 1993) 750 ppm (2210 mg/m3) OSHA
STEL (vacated by 58 FR 35338, June 30, 1993) 600 ppm ACGIH TWA 120
ppm (350 mg/m3) NIOSH recommended TWA 10 hour(s) 610 ppm (1800
mg/m3) NIOSH recommended ceiling 15 minute(s)

Boiling Pt:96.93 F (36.07 C)
Melt/Freeze Pt:-201.5 F (-129.7 C)
Vapor Pres:400 mmHg @ 18.5 C
Vapor Density:2.5
Spec Gravity:0.626
pH:Not available
Evaporation Rate & Reference:28.6 (butyl acetate=1)
Solubility in Water:0.04%
Appearance and Odor:PHYSICAL STATE:liquid COLOR:colorless ODOR:gasoline
odor
Corrosion Rate:

Stability Indicator/Materials to Avoid:Stable at normal temperatures
and pressure.
Stability Condition to Avoid:Avoid heat, flames, sparks and other
sources of ignition. Containers may rupture or explode if exposed
to heat. Keep out of water supplies and sewers.
Hazardous Decomposition Products:Thermal decomposition products: oxides
of carbon Thermal decomposition products: oxides of carbon
Conditions to Avoid Polymerization:Will not polymerize.

Waste Disposal Methods:Dispose in accordance with all applicable
regulations. Subject to disposal regulations: U.S. EPA 40 CFR 262.
Hazardous Waste Number(s): D001.

Toxicological Information:PENTANE: TOXICITY DATA: 364 gm/m3/4 hour(s)
inhalation-rat LC50; 400 mg/kg oral-rat LD50 LOCAL EFFECTS:
Irritant: inhalation, skin ACUTE TOXICITY LEVEL: Toxic: ingestion
Relatively Non-toxic: inhalation TARGET ORGANS: central nervous
system MEDICAL CONDITIONS AGGRAVATED BY EXPOSURE: respiratory
disorders, skin disorders and allergies ADDITIONAL DATA: Alcohol
may enhance the toxic effects.

Disclaimer (provided with this information by the compiling agencies):
This information is formulated for use by elements of the Department
of Defense. The United States of America in no manner whatsoever,
expressly or implied, warrants this information to be accurate and
disclaims all liability for its use. Any person utilizing this
document should seek competent professional advice to verify and
assume responsibility for the suitability of this information to their
particular situation.

Ecological:ECOTOXICITY DATA: INVERTEBRATE TOXICITY: 3000000 ug/L 48
week(s) (Mortality) Pacific oyster (Crassostrea gigas) ALGAL
TOXICITY: 1000 ug/L 8 year(s) EC50 (Photosynthesis)
Algae,phytoplankton,algal mat (Algae) FATE AND TRANSPORT:
BIOCONCENTRATION: 25100 ug/L 28 hour(s) BCF (Residue) Oligochaete
(Lumbriculus variegatus) 5.8 ug/L

Transport Information:U.S. DOT 49 CFR 172.101: PROPER SHIPPING NAME:
Pentanes ID NUMBER: UN1265 HAZARD CLASS OR DIVISION: 3 PACKING
GROUP: I LABELING REQUIREMENTS: Flammable liquid

SARA Title III Information: SARA TITLE III SECTION 302 EXTREMELY
HAZARDOUS SUBSTANCES (40 CFR 355.30): Not regulated. SARA TITLE
III SECTION 304 EXTREMELY HAZARDOUS SUBSTANCES (40 CFR 355.40): Not
regulated. SARA TITLE III SARA SECTIONS 311/312 HAZARDOUS
CATEGORIES (40 CFR 370.21): ACUTE: Yes CHRONIC: No FIRE: Yes
REACTIVE: No SUDDEN RELEASE: No SARA TITLE III SECTION 313 (40
CFR 372.65): Not regulated.
Federal Regulatory Information:CERCLA SECTIONS 102a/103 HAZARDOUS
SUBSTANCES (40 CFR 302.4): Not regulated. OSHA PROCESS SAFETY
(29CFR1910.119): Not regulated.
State Regulatory Information: California Proposition 65: Not regulated.