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MSDS 
:
 Isobutylbenzene, 99.5%
CAS 
:
 538-93-2
SYNONYMS 
:
 2-Methyl-1-phenylpropane; (2-Methylpropyl)benzene; IBB.
**** SECTION 2 - COMPOSITION, INFORMATION ON INGREDIENTS ****

+----------------+--------------------------------------+----------+-----------+
| CAS# | Chemical Name | % | EINECS# |
|----------------|--------------------------------------|----------|-----------|
| 538-93-2 |Isobutylbenzene | 99.5 | 208-706-2 |
+----------------+--------------------------------------+----------+-----------+
Hazard Symbols: XN
Risk Phrases: 10 65

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

EMERGENCY OVERVIEW
Flammable. Harmful: may cause lung damage if swallowed.

Potential Health Effects
Eye:
Causes eye irritation.
Skin:
Causes skin irritation. Prolonged or repeated contact may dry/defat
the skin and cause irritation.
Ingestion:
Aspiration hazard. May cause gastrointestinal irritation with
nausea, vomiting and diarrhea. Aspiration of material into the lungs
may cause chemical pneumonitis, which may be fatal. Ingestion of
large amounts may cause CNS depression.
Inhalation:
Causes respiratory tract irritation. Inhalation at high
concentrations may cause CNS depression and asphixiation.
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:
Get medical aid. Flush skin with plenty of water for at least 15
minutes while removing contaminated clothing and shoes. 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:
Remove from exposure and move to fresh air immediately. If not
breathing, give artificial respiration. If breathing is difficult,
give oxygen. Get medical aid.
Notes to Physician:
Treat symptomatically and supportively.

**** 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. Vapors may form an explosive mixture with air. Containers may
explode when heated. 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.
Extinguishing Media:
Use water fog or spray, dry chemical, foam or carbon dioxide.

**** 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. 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 heat, sparks, and flame. Keep away from sources of
ignition. Store in a tightly closed container. Store in a cool, dry,
well-ventilated area away from incompatible substances.
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# 538-93-2:


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:
A respiratory protection program that meets OSHA's 29
CFR 1910.134 and ANSI Z88.2 requirements or European
Standard EN 149 must be followed whenever workplace
conditions warrant respirator use.

**** SECTION 9 - PHYSICAL AND CHEMICAL PROPERTIES ****

Physical State: Liquid
Color: clear colorless
Odor: sweet, aromatic
pH: Not available.
Vapor Pressure: 1.93 mm Hg @ 25 deg C
Viscosity: 1.05 cP 20 deg C
Boiling Point: 170 deg C @ 736 mm Hg
Freezing/Melting Point: -51 deg C
Autoignition Temperature: 427 deg C ( 800.60 deg F)
Flash Point: 55 deg C ( 131.00 deg F)
Explosion Limits, lower: .80 vol %
Explosion Limits, upper: 6.00 vol %
Decomposition Temperature: Not available.
Solubility in water: insoluble
Specific Gravity/Density: .8500
Molecular Formula: C10H14
Molecular Weight: 134.22

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

Chemical Stability:
Stable under normal temperatures and pressures.
Conditions to Avoid:
Ignition sources, excess heat.
Incompatibilities with Other Materials:
Strong oxidizing agents.
Hazardous Decomposition Products:
Carbon monoxide, carbon dioxide.
Hazardous Polymerization: Will not occur.

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

RTECS#:
CAS# 538-93-2: DA3550000
LD50/LC50:
Not available.
The mean 24-hour Draize eye irritation score in rabbits is 2.0/110.
For a 24-hour exposure, the Primary Skin Irritation Score in rabbits
is 0/8. The acute oral LD50 in rats is 3321 mg/kg. The LC50 of this
material is > 1032 ppm. Slight to moderate upper airway irritancy
was observed in male mice at approximately 200 ppm. This material
was tested in the Ames Test, the Mouse Lymphoma Forward Mutational
Assay and the In Vitro Sister Chromatid Exchange assay and found to
be non-mutagenic. (Chevron Phillips)
Carcinogenicity:
Isobutylbenzene -
Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.

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

Ecotoxicity:
Algae: 35 mg/l; 96 hr; LC50Fish: Sheepshead minnow: > 200 mg/l; 96
hr; LC50

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

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

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

IATA
Shipping Name: FLAMMABLE LIQUID, N.O.S.*
Hazard Class: 3
UN Number: 1993
Packing Group: III
IMO
Shipping Name: FLAMMABLE LIQUID, N.O.S.
Hazard Class: 3.3
UN Number: 1993
Packing Group: III
RID/ADR
Shipping Name: FLAMMABLE LIQUID, N.O.S.
Hazard Class: 3
UN Number: 1993
Packing group: III

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

European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: XN
Risk Phrases:
R 10 Flammable.
R 65 Harmful: may cause lung damage if swallowed.
Safety Phrases:
S 16 Keep away from sources of ignition - No
smoking.
WGK (Water Danger/Protection)
CAS# 538-93-2: No information available.
Canada
CAS# 538-93-2 is listed on Canada's DSL List.
CAS# 538-93-2 is not listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 538-93-2 is listed on the TSCA inventory.

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

MSDS Creation Date: 7/06/1999 Revision #5 Date: 3/18/2004

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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