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MSDS 
:
 Cyclopentanone
CAS 
:
 120-92-3
SYNONYMS 
:
 Ketocyclopentane; Ketopentamethylene; Adipic ketone.
**** SECTION 2 - COMPOSITION, INFORMATION ON INGREDIENTS ****

+----------------+--------------------------------------+----------+-----------+
| CAS# | Chemical Name | % | EINECS# |
|----------------|--------------------------------------|----------|-----------|
| 120-92-3 |Cyclopentanone | >99 | 204-435-9 |
+----------------+--------------------------------------+----------+-----------+
Hazard Symbols: XI
Risk Phrases: 10 36/38

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

EMERGENCY OVERVIEW
Flammable. Irritating to eyes and skin.

Potential Health Effects
Eye:
Causes severe eye irritation.
Skin:
Causes skin irritation.
Ingestion:
May cause gastrointestinal irritation with nausea, vomiting and
diarrhea.
Inhalation:
Causes respiratory tract irritation.
Chronic:
No information found.

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

Eyes:
Immediately flush eyes with plenty of water for at least 15 minutes,
occasionally lifting the upper and lower eyelids. Get medical aid
immediately.
Skin:
Immediately 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. If victim is conscious and alert, give 2-4
cupfuls of milk or water. Never give anything by mouth to an
unconscious person. Get medical aid.
Inhalation:
Remove from exposure and move to fresh air immediately. If not
breathing, give artificial respiration. If breathing is difficult,
give oxygen. Get medical aid if cough or other symptoms appear.
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. Flammable
liquid and vapor. 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.
Extinguishing Media:
Use water spray to cool fire-exposed containers. Use foam, dry
chemical, or carbon dioxide. Water may be ineffective.

**** 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. Clean up spills immediately,
observing precautions in the Protective Equipment section. Scoop up
with a nonsparking tool, then place into a suitable container for
disposal. Remove all sources of ignition. Provide ventilation.

**** 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. 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 cool, dry place.
Store in a tightly closed container. Flammables-area.

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

Engineering Controls:
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# 120-92-3:

Germany: 690 mg/m3 TWA

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: Clear
Odor: Agreeable, peppermint-like odor.
pH: Not available.
Vapor Pressure: 11.4 mm Hg @ 25 deg C
Viscosity: Not available.
Boiling Point: 130-131 deg C @ 760 mm Hg
Freezing/Melting Point: -51 deg C
Autoignition Temperature: 430 deg C ( 806.00 deg F)
Flash Point: 31 deg C ( 87.80 deg F)
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature:
Solubility in water: Slightly soluble.
Specific Gravity/Density: .95 g/ml
Molecular Formula: C5H8O
Molecular Weight: 84.12

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

Chemical Stability:
Stable under normal temperatures and pressures. Stable under normal
temperatures and pressures.
Conditions to Avoid:
Ignition sources, excess heat, confined spaces.
Incompatibilities with Other Materials:
Strong oxidizing agents, strong acids.
Hazardous Decomposition Products:
Carbon monoxide, carbon dioxide.
Hazardous Polymerization: May occur.

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

RTECS#:
CAS# 120-92-3: GY4725000
LD50/LC50:
CAS# 120-92-3: Draize test, rabbit, eye: 100 mg Severe; Draize test,
rabbit, skin: 500 mg/24H; Draize test, rabbit, skin: 500 mg Mild;
Inhalation, rat: LC50 = 19500 mg/m3; Oral, mouse: LD50 = 1820 mg/kg.
Carcinogenicity:
Cyclopentanone -
Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.

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

Ecotoxicity:
EC50 Daphnia magna 1440 mg/l Toxicity threshold: Scenedesmus
quadricaude 370 mg/l; Entosiphon sulcatum 545 mg/l

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

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

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

IATA
Shipping Name: CYCLOPENTANONE
Hazard Class: 3
UN Number: 2245
Packing Group: III
IMO
Shipping Name: CYCLOPENTANONE
Hazard Class: 3.3
UN Number: 2245
Packing Group: III
RID/ADR
Shipping Name: CYCLOPENTANONE
Hazard Class: 3
UN Number: 2245
Packing group: III

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

European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: XI
Risk Phrases:
R 10 Flammable.
R 36/38 Irritating to eyes and skin.
Safety Phrases:
S 23 Do not inhale gas/fumes/vapour/spray.
WGK (Water Danger/Protection)
CAS# 120-92-3: 1
Canada
CAS# 120-92-3 is listed on Canada's DSL List.
CAS# 120-92-3 is listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 120-92-3 is listed on the TSCA inventory.

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

MSDS Creation Date: 9/02/1997 Revision #3 Date: 12/03/2003

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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