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MSDS 
:
 Methylcyclopentane, 99+%
CAS 
:
 96-37-7
SYNONYMS 
:
 MCP; Methylcyclopentane.
**** SECTION 2 - COMPOSITION, INFORMATION ON INGREDIENTS ****

+----------------+--------------------------------------+----------+-----------+
| CAS# | Chemical Name | % | EINECS# |
|----------------|--------------------------------------|----------|-----------|
| 96-37-7 |Methylcyclopentane | > 99 | 202-503-2 |
+----------------+--------------------------------------+----------+-----------+
Hazard Symbols: XN F
Risk Phrases: 11 65

**** SECTION 3 - HAZARDS IDENTIFICATION ****

EMERGENCY OVERVIEW
Highly flammable. Harmful: may cause lung damage if swallowed.

Potential Health Effects
Eye:
Contact may cause transient eye irritation.
Skin:
May cause skin irritation. No skin absorption data found.
Ingestion:
May cause gastrointestinal irritation with nausea, vomiting and
diarrhea. Aspiration of material into the lungs may cause chemical
pneumonitis, which may be fatal. Possible aspiration hazard.
Ingestion of large amounts may cause CNS depression.
Inhalation:
May cause respiratory tract irritation. May be harmful if inhaled.
May cause nausea, dizziness, and headache. Inhalation at high
concentrations may cause CNS depression and asphixiation.
Chronic:
Prolonged or repeated skin contact may cause defatting and
dermatitis.

**** SECTION 4 - FIRST AID MEASURES ****

Eyes:
In case of contact, immediately flush eyes with plenty of water for
at least 15 minutes. Get medical aid.
Skin:
In case of contact, flush skin with plenty of water. Remove
contaminated clothing and shoes. Get medical aid if irritation
develops and persists. Wash clothing before reuse.
Ingestion:
Potential for aspiration if swallowed. Get medical aid immediately.
Do not induce vomiting unless directed to do so by medical
personnel. Never give anything by mouth to an unconscious person.
Inhalation:
If inhaled, remove to fresh air. If not breathing, give artificial
respiration. If breathing is difficult, give oxygen. Get medical aid.
Notes to Physician:

**** SECTION 5 - FIRE FIGHTING MEASURES ****

General Information:
As in any fire, wear a self-contained breathing apparatus in
pressure-demand, MSHA/NIOSH (approved or equivalent), and full
protective gear. During a fire, irritating and highly toxic gases
may be generated by thermal decomposition or combustion. Use water
spray to keep fire-exposed containers cool. Flammable liquid and
vapor. Containers may explode if exposed to fire. Vapors are heavier
than air and may travel to a source of ignition and flash back.
Vapors can spread along the ground and collect in low or confined
areas. This liquid floats on water and may travel to a source of
ignition and spread fire. May accumulate static electricity.
Extinguishing Media:
Use foam, dry chemical, or carbon dioxide. Water may be ineffective.
Water may spread fire. If water is the only media available, use in
flooding amounts. Do NOT use straight streams of water. Cool
containers with flooding quantities of water until well after fire
is out.

**** 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. Avoid runoff into storm sewers and
ditches which lead to waterways. Clean up spills immediately,
observing precautions in the Protective Equipment section. Remove all
sources of ignition. Use a spark-proof tool. Provide ventilation. A
vapor suppressing foam may be used to reduce vapors.

**** SECTION 7 - HANDLING and STORAGE ****

Handling:
Wash thoroughly after handling. Remove contaminated clothing and
wash before reuse. Ground and bond containers when transferring
material. Use spark-proof tools and explosion proof equipment. Avoid
contact with eyes, skin, and clothing. Empty containers retain
product residue, (liquid and/or vapor), and can be dangerous. Keep
container tightly closed. If peroxide formation is suspected, do not
open or move container. Do not pressurize, cut, weld, braze, solder,
drill, grind, or expose empty containers to heat, sparks or open
flames. Use only with adequate ventilation. Keep away from heat,
sparks and flame. Avoid breathing vapor or mist.
Storage:
Keep away from sources of ignition. Store in a tightly closed
container. Refrigerator/flammables. Separate from oxidizing
materials. Containers should be dated when opened and tested
periodically for the presence of peroxides. Should crystals form in a
peroxidizable liquid, peroxidation may have occurred and the product
should be considered extremely dangerous. In this instance, the
container should only be opened remotely by professionals. All
peroxidizable substances should be stored away from heat and light
and be protected from ignition sources.

**** SECTION 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION ****

Engineering Controls:
Use explosion-proof ventilation equipment. Facilities storing or
utilizing this material should be equipped with an eyewash facility
and a safety shower. Use adequate general or local explosion-proof
ventilation to keep airborne levels to acceptable levels.
Exposure Limits
CAS# 96-37-7:


Personal Protective Equipment

Eyes:
Wear chemical splash goggles.
Skin:
Wear appropriate protective gloves to prevent skin
exposure.
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: Liquid
Color: colorless
Odor: sweetish odor - gasoline-like
pH: Not available.
Vapor Pressure: 138 mm Hg @ 25 deg C
Viscosity: Not available.
Boiling Point: 72 deg C
Freezing/Melting Point: -142 deg C
Autoignition Temperature: 258 deg C ( 496.40 deg F)
Flash Point: -10 deg C ( 14.00 deg F)
Explosion Limits, lower: 1.0%
Explosion Limits, upper: 8.4%
Decomposition Temperature:
Solubility in water: Insoluble.
Specific Gravity/Density: 0.7490
Molecular Formula: C6H12
Molecular Weight: 84.16

**** SECTION 10 - STABILITY AND REACTIVITY ****

Chemical Stability:
Under normal storage conditions, peroxidizable compounds can form
and accumulate peroxides which may explode when subjected to heat or
shock. This material is most hazardous when peroxide levels are
concentrated by distillation or evaporation.
Conditions to Avoid:
Ignition sources, excess heat.
Incompatibilities with Other Materials:
Strong oxidizing agents.
Hazardous Decomposition Products:
Carbon monoxide, irritating and toxic fumes and gases, carbon
dioxide.
Hazardous Polymerization: Has not been reported.

**** SECTION 11 - TOXICOLOGICAL INFORMATION ****

RTECS#:
CAS# 96-37-7: GY4640000
LD50/LC50:
Not available.
Carcinogenicity:
Methylcyclopentane -
Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.

**** SECTION 12 - ECOLOGICAL INFORMATION ****

Other
No information available.

**** SECTION 13 - DISPOSAL CONSIDERATIONS ****

Dispose of in a manner consistent with federal, state, and local regulations.

**** SECTION 14 - TRANSPORT INFORMATION ****

IATA
Shipping Name: METHYLCYCLOPENTANE
Hazard Class: 3
UN Number: 2298
Packing Group: II
IMO
Shipping Name: METHYLCYCLOPENTANE
Hazard Class: 3.2
UN Number: 2298
Packing Group: II
RID/ADR
Shipping Name: METHYLCYCLOPENTANE
Hazard Class: 3
UN Number: 2298
Packing group: II

**** SECTION 15 - REGULATORY INFORMATION ****

European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: XN F
Risk Phrases:
R 11 Highly flammable.
R 65 Harmful: may cause lung damage if swallowed.
Safety Phrases:
S 9 Keep container in a well-ventilated place.
S 16 Keep away from sources of ignition - No
smoking.
S 33 Take precautionary measures against static
discharges.
S 62 If swallowed, do not induce vomiting: seek
medical advice immediately and show this container or
label.
WGK (Water Danger/Protection)
CAS# 96-37-7: 1
Canada
CAS# 96-37-7 is listed on Canada's DSL List.
CAS# 96-37-7 is not listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 96-37-7 is listed on the TSCA inventory.

**** SECTION 16 - ADDITIONAL INFORMATION ****

MSDS Creation Date: 2/19/1999 Revision #3 Date: 11/04/2002

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 way shall the company 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 the company has been advised of
the possibility of such damages.
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