Material Safety Data Sheet
CYCLOHEXANE
May 23, 2001
MSDS#: 895
Revision#: 18
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1. CHEMICAL PRODUCT AND COMPANY IDENTIFICATION
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CYCLOHEXANE
PRODUCT NUMBER(S): CC02069600 CPS361430
COMPANY IDENTIFICATION EMERGENCY TELEPHONE NUMBERS
Chevron Phillips Chemical Company, LP HEALTH (24 hr): (800)231-0623 or
10001 Six Pines Drive (510)231-0623 (International)
The Woodlands, TX 77380 TRANSPORTATION (24 hr): CHEMTREC
(800)424-9300 or (703)527-3887
Emergency Information Centers
are located in U.S.A.
Int'l collect calls accepted
PRODUCT INFORMATION: MSDS Requests (Hotline: 1-800-852-5530
Technical Information: 1-800-852-5531
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2. COMPOSITION/INFORMATION ON INGREDIENTS
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100.0 % CYCLOHEXANE
CONTAINING
COMPONENTS AMOUNT LIMIT/QTY AGENCY/TYPE
CYCLOHEXANE
Chemical Name: CYCLOHEXANE
CAS110827 > 99.90% 300 ppm ACGIH TWA
300 ppm OSHA PEL
1,000 LBS CERCLA 302.4 RQ
COMPOSITION COMMENT:
All the components of this material are on the Toxic Substances Control
Act Chemical Substances Inventory.
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3. HAZARDS IDENTIFICATION
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************************* EMERGENCY OVERVIEW *************************
Colorless, mobile liquid with sweetish odor resembling
that of chloroform
- EXTREMELY FLAMMABLE LIQUID AND VAPOR. VAPOR MAY
CAUSE FLASH FIRE
- HARMFUL OR FATAL IF SWALLOWED - CAN ENTER LUNGS AND
CAUSE DAMAGE
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IMMEDIATE HEALTH EFFECTS
EYE:
Not expected to cause prolonged or significant eye irritation.
SKIN:
Contact with the skin is not expected to cause prolonged or significant
irritation. Skin contact may cause drying or defatting of the skin. Not
expected to be harmful to internal organs if absorbed through the skin.
INGESTION:
Because of its low viscosity, this material can directly enter the lungs,
if swallowed, or if subsequently vomited. Once in the lungs it is very
difficult to remove and can cause severe injury or death.
INHALATION:
Breathing this material at concentrations above the recommended exposure
limit may cause central nervous system effects.
SIGNS AND SYMPTOMS OF EXPOSURE:
Skin defatting: may include drying and reddening of the skin. Central
nervous system effects may include headache, dizziness, nausea, vomiting,
weakness, loss of coordination, blurred vision, drowsiness, confusion, or
disorientation. At extreme exposures, central nervous system effects may
include respiratory depression, tremors or convulsions, loss of
consciousness, coma or death.
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4. FIRST AID MEASURES
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EYE:
No specific first aid measures are required because this material is not
expected to cause eye irritation. As a precaution remove contact lenses,
if worn, and flush eyes with water.
SKIN:
Remove contaminated clothing and shoes. Wash skin with soap and water.
Wash or clean contaminated clothing and shoes before reuse.
INGESTION:
If swallowed, do not induce vomiting. Give the person a glass of water or
milk to drink and get immediate medical attention. Never give anything by
mouth to an unconscious person.
INHALATION:
Move the exposed person to fresh air. If not breathing, give artificial
respiration. If breathing is difficult, give oxygen. Get medical
attention if symptoms continue.
NOTE TO PHYSICIANS:
Ingestion of this product or subsequent vomiting may result in aspiration
of light hydrocarbon liquid, which may cause pneumonitis.
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5. FIRE FIGHTING MEASURES
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FIRE CLASSIFICATION:
Classification (29 CFR 1910.1200): Flammable liquid.
FLAMMABLE PROPERTIES:
FLASH POINT: (CC) -1F (-18.3C)
AUTOIGNITION: 473F (245C)
FLAMMABILITY LIMITS (% by volume in air): Lower: 1.3 Upper: 8.0
EXTINGUISHING MEDIA:
CO2, dry chemical, foam and water fog.
NFPA RATINGS: Health 1; Flammability 3; Reactivity 0.
FIRE FIGHTING INSTRUCTIONS:
For fires involving this material, do not enter any enclosed or confined
fire space without proper protective equipment, including self-contained
breathing apparatus.
See section 7 for appropriate handling and storage conditions.
COMBUSTION PRODUCTS:
Normal combustion forms carbon dioxide and water vapor; incomplete
combustion can produce carbon monoxide.
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6. ACCIDENTAL RELEASE MEASURES
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CHEMTREC EMERGENCY NUMBER (24 hr): (800)424-9300 or (703)527-3887
International Collect Calls Accepted
ACCIDENTAL RELEASE MEASURES:
Certain geographical areas have air pollution restrictions concerning the
use of materials in work situations which may release volatile components
to the atmosphere. Air pollution regulations should be studied to
determine if this material is regulated in the area where it is to be
used.
Eliminate all sources of ignition in the vicinity of the spill or released
vapor.
Stop the source of the leak or release. Clean up releases as soon as
possible, observing precautions in Exposure Controls/Personal Protection.
Contain liquid to prevent further contamination of soil, surface water or
groundwater. Clean up small spills using appropriate techniques such as
sorbent materials or pumping. Where feasible and appropriate, remove
contaminated soil. Follow prescribed procedures for reporting and
responding to larger releases.
Release of this product should be prevented from contaminating soil and
water and from entering drainage and sewer systems. U.S.A. regulations
require reporting spills of this material that could reach any surface
waters. The toll free number for the U.S. Coast Guard National Response
Center is (800) 424-8802.
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7. HANDLING AND STORAGE
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Do not get in eyes, on skin, or on clothing. Do not taste or swallow. Do
not breathe vapor or fumes. Wash thoroughly after handling.
This product presents an extreme fire hazard. Liquid very quickly
evaporates, even at low temperatures, and forms vapor (fumes) which can
catch fire and burn with explosive violence. Invisible vapor spreads
easily and can be set on fire by many sources such as pilot lights,
welding equipment, and electrical motors and switches.
Do not use or store near heat, sparks, or open flames. Use or store only
in a well-ventilated area. Keep container closed when material is not in
use. Container is not designed to contain pressure. Do not use pressure
to empty container or it may rupture with explosive force. Empty
containers retain product residue (solid, liquid, and/or vapor) and can be
dangerous. Do not pressurize, cut, weld, braze, solder, drill, grind, or
expose such containers to heat, flame, sparks, static electricity, or
other sources of ignition. They may explode and cause injury or death.
Empty containers should be completely drained, properly closed, and
promptly returned to a drum reconditioner, or properly disposed of.
For more information, refer to OSHA Standard 29 CFR 1910.106, "Flammable
and Combustible Liquids", National Fire Protection Association (NFPA) 77,
"Recommended Practice on Static Electricity", and/or the American
Petroleum Institute (API) Recommended Practice 2003, "Protection Against
Ignitions Arising Out of Static, Lighting, and Stray Currents".
Avoid work practices that may release volatile components into the
atmosphere. Local air pollution regulations should be consulted to
determine if the release of volatile components is regulated or restricted
in the area in which this material is used.
Avoid contaminating soil or releasing this material into sewage and
drainage systems and bodies of water.
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8. EXPOSURE CONTROLS/PERSONAL PROTECTION
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GENERAL CONSIDERATIONS:
Consider the potential hazards of this material (see Section 3),
applicable exposure limits, job activities, and other substances in the
work place when designing engineering controls and selecting personal
protective equipment. If engineering controls or work practices are not
adequate to prevent exposure to harmful levels of this material, the
personal protective equipment listed below is recommended. The user should
read and understand all instructions and limitations supplied with the
equipment since protection is usually provided for a limited time or under
certain circumstances.
ENGINEERING CONTROLS
Use process enclosures, local exhaust ventilation, or other engineering
controls to control airborne levels below the recommended exposure limits.
PERSONAL PROTECTIVE EQUIPMENT
EYE/FACE PROTECTION:
No eye protection is normally required.
SKIN PROTECTION:
Wear impervious protective clothing to prevent skin contact. Selection of
protective clothing may include gloves, apron, boots, and complete facial
protection and will depend on operations conducted. Users should
determine acceptable performance characteristics of protective clothing.
Consider physical requirements and other substances present when selecting
protective clothing. Suggested materials for protective gloves include:
Polyethylene or CPE)>
with water. PVA deteriorates in water)>
RESPIRATORY PROTECTION:
Determine if airborne concentrations are below the recommended exposure
limits. If not, wear a NIOSH approved respirator that provides adequate
protection from measured concentrations of this material. Use the
following element(s) for air-purifying respirators: Organic Vapor. Use a
positive pressure, air-supplying respirator if there is potential for
uncontrolled release, exposure levels are not known, or other
circumstances where air-purifying respirators may not provide adequate
protection.
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9. PHYSICAL AND CHEMICAL PROPERTIES
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PHYSICAL DESCRIPTION:
Colorless, mobile liquid with sweetish odor resembling
that of chloroform
pH: NA
VAPOR PRESSURE: 3.26 PSI (169 mm Hg) @ 100F
VAPOR DENSITY
(AIR=1): 2.9
BOILING POINT: 177F (80.7C)
MELTING POINT: 43.7F (6.5C)
SOLUBILITY: Soluble in hydrocarbon solvents, natural oils, fats,
and waxes; insoluble in water.
SPECIFIC GRAVITY: 0.78 @ 60F
DENSITY: 0.78 g/cm3 @ 60F
EVAPORATION RATE: 1.95
VISCOSITY: 0.953 cSt @ 100F
PERCENT VOLATILE
(VOL): 100%
MOLECULAR WEIGHT: 84.162
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10. STABILITY AND REACTIVITY
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HAZARDOUS DECOMPOSITION PRODUCTS:
NDA
CHEMICAL STABILITY:
Stable.
CONDITIONS TO AVOID:
No data available.
INCOMPATIBILITY WITH OTHER MATERIALS:
May react with strong oxidizing agents, such as chlorates, nitrates,
peroxides, etc.
HAZARDOUS POLYMERIZATION:
Polymerization will not occur.
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11. TOXICOLOGICAL INFORMATION
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EYE EFFECTS:
Minimal effects clearing in less than 24 hours.
SKIN EFFECTS:
For a 4-hour exposure, the Primary Irritation Index (PII) in rabbits is:
0.0. The acute dermal LD50 in rabbits is >2.0 g/kg.
ACUTE ORAL EFFECTS:
The acute oral LD50 in rats is > 5 g/kg.
ACUTE INHALATION EFFECTS:
No deaths occurred in a 4-hour inhalation test at the maximum tested
concentration of 4,044 ppm.
ADDITIONAL TOXICOLOGY INFORMATION:
Cyclohexane primarily affects the central nervous systems of laboratory
animals and humans. Acute or prolonged inhalation of cyclohexane at
levels below the recommended exposure limits does not result in toxic
effects while acute exposures to levels above these recommended limits can
cause reversible central nervous system depression. Prolonged exposures of
laboratory animals to high levels (up to low thousands of parts per
million) have also caused reversible effects which included hyperactivity,
diminished response to stimuli, and adaptive liver changes while very high
levels (high thousands of parts per million) were fatal. No developmental
effects were seen in rats or rabbits following exposures of up to 7000 ppm
cyclohexane. No reproductive effects occurred in rats, although postnatal
pup growth was reduced at 7000 ppm in a similar manner as observed in the
parental animals. Cyclohexane has not been shown to be mutagenic in
several in vitro and in vivo assays and has not produced tumors in several
dermal application long-term bioassays. Based on these results and the
lack of any mutagenic or genotoxic metabolites, cyclohexane is not
expected to be mutagenic or genotoxic. Following dermal exposure,
cyclohexane is rapidly absorbed, metabolized, and excreted.
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12. ECOLOGICAL INFORMATION
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ECOTOXICITY:
This material is expected to be harmful to aquatic organisms. The 96-hour
LC50 for fathead minnow (Pimephales promelas) is 93 mg/l. The 96-hour
EC50 in daphnia (Daphnia magna) is 135 mg/l. Cyclohexane was relatively
non-toxic to the earthworm (Eisenia foetida) in a 24-hour exposure (LC50 >
1000 mg/l).
ENVIRONMENTAL FATE:
Cyclohexane is expected to evaporate rapidly if released to land or water.
The volatilization half-life from a body of water has been estimated to be
as low as 2.8 hours. In the atmosphere, cyclohexane will degrade with a
half-life of 52 hours. When absorbed into soil, cyclohexane is not
expected to readily biodegrade. However, microorganisms from an
oil-exposed environment have been shown to biodegrade cyclohexane.
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13. DISPOSAL CONSIDERATIONS
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Place contaminated materials in disposable containers and dispose of in a
manner consistent with applicable regulations. Contact local
environmental or health authorities for approved disposal of this
material.
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14. TRANSPORT INFORMATION
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The description shown may not apply to all shipping situations.
Consult 49CFR, or appropriate Dangerous Goods Regulations, for
additional description requirements (e.g., technical name) and
mode-specific or quantity-specific shipping requirements.
DOT SHIPPING NAME: CYCLOHEXANE
DOT HAZARD CLASS: 3 (FLAMMABLE LIQUID)
DOT IDENTIFICATION NUMBER: UN1145
DOT PACKING GROUP: II
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15. REGULATORY INFORMATION
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SARA 311 CATEGORIES: 1. Immediate (Acute) Health Effects: YES
2. Delayed (Chronic) Health Effects: NO
3. Fire Hazard: YES
4. Sudden Release of Pressure Hazard: NO
5. Reactivity Hazard: NO
REGULATORY LISTS SEARCHED:
01=SARA 313 11=NJ RTK 22=TSCA Sect 5(a)(2)
02=MASS RTK 12=CERCLA 302.4 23=TSCA Sect 6
03=NTP Carcinogen 13=MN RTK 24=TSCA Sect 12(b)
04=CA Prop 65-Carcin 14=ACGIH TWA 25=TSCA Sect 8(a)
05=CA Prop 65-Repro Tox 15=ACGIH STEL 26=TSCA Sect 8(d)
06=IARC Group 1 16=ACGIH Calc TLV 27=TSCA Sect 4(a)
07=IARC Group 2A 17=OSHA PEL 28=Canadian WHMIS
08=IARC Group 2B 18=DOT Marine Pollutant 29=OSHA CEILING
09=SARA 302/304 19=Chevron TWA 30=Chevron STEL
10=PA RTK 20=EPA Carcinogen
The following components of this material are found on the regulatory
lists indicated.
CYCLOHEXANE
is found on lists: 01,02,10,11,12,13,14,17,26,28,
EU RISK AND SAFETY LABEL PHRASES:
EU SYMBOL(S): F
R11
S2
S9
S16
S33
WHMIS CLASSIFICATION:
Class B, Division 2: Flammable Liquids
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16. OTHER INFORMATION
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NFPA RATINGS: Health 1; Flammability 3; Reactivity 0;
HMIS RATINGS: Health 1; Flammability 3; Reactivity 0;
(0-Least, 1-Slight, 2-Moderate, 3-High, 4-Extreme, PPE:- Personal
Protection Equipment Index recommendation, *- Chronic Effect
Indicator). These values are obtained using the guidelines or
published evaluations prepared by the National Fire Protection
Association (NFPA) or the National Paint and Coating Association
(for HMIS ratings).
REVISION STATEMENT:
This revision updates Section 5.
ABBREVIATIONS THAT MAY HAVE BEEN USED IN THIS DOCUMENT:
TLV - Threshold Limit Value TWA - Time Weighted Average
STEL - Short-term Exposure Limit TPQ - Threshold Planning Quantity
RQ - Reportable Quantity PEL - Permissible Exposure Limit
C - Ceiling Limit CAS - Chemical Abstract Service Number
A1-5 - Appendix A Categories () - Change Has Been Proposed
NDA - No Data Available NA - Not Applicable
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Prepared according to the OSHA Hazard Communication Standard
(29 CFR 1910.1200) and the ANSI MSDS Standard (Z400.1) by the Toxicology
and Health Risk Assessment Unit, CRTC, P.O. Box 1627, Richmond, CA 94804
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The above information is based on the data of which we are aware and is
believed to be correct as of the date hereof. Since this information may
be applied under conditions beyond our control and with which we may be
unfamiliar and since data made available subsequent to the date hereof may
suggest modification of the information, we do not assume any responsibil-
ity for the results of its use. This information is furnished upon
condition that the person receiving it shall make his own determination
of the suitability of the material for his particular purpose.
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