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MSDS 
:
 beta-Methylstyrene, 99% trans, stabilized with 0.01% BHT
CAS 
:
 128-37-0
SYNONYMS 
:
 1-Phenyl-1-propene.
**** SECTION 2 - COMPOSITION, INFORMATION ON INGREDIENTS ****

+----------------+--------------------------------------+----------+-----------+
| CAS# | Chemical Name | % | EINECS# |
|----------------|--------------------------------------|----------|-----------|
|----------------|--------------------------------------|----------|-----------|
| 128-37-0 |Butylated hydroxytoluene | .01 | 204-881-4 |
|----------------|--------------------------------------|----------|-----------|
| 637-50-3 |beta-Methylstyrene | 99.0 | 211-287-9 |
+----------------+--------------------------------------+----------+-----------+
Text for R-phrases: see Section 16
Hazard Symbols: XI
Risk Phrases: 36/37

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

EMERGENCY OVERVIEW
Irritating to eyes and respiratory system.

Potential Health Effects
Eye:
Causes eye irritation. May cause chemical conjunctivitis and
corneal damage.
Skin:
Causes skin irritation. May cause dermatitis. May cause cyanosis of
the extremities.
Ingestion:
May cause gastrointestinal irritation with nausea, vomiting and
diarrhea. Ingestion of large amounts may cause CNS depression.
Inhalation:
Causes respiratory tract irritation. Aspiration may lead to
pulmonary edema. Vapors may cause dizziness or suffocation.
Inhalation at high concentrations may cause CNS depression and
asphixiation. May cause burning sensation in the chest.
Chronic:
Effects may be delayed.

**** 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.
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:
Never give anything by mouth to an unconscious person. Get medical
aid. Do NOT induce vomiting. If conscious and alert, rinse mouth and
drink 2-4 cupfuls of milk or water.
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. Combustible liquid.
Vapors may be heavier than air. They can spread along the ground and
collect in low or confined areas. Containers may explode when heated.
Extinguishing Media:
Use water spray to cool fire-exposed containers. Water may be
ineffective. Do NOT use straight streams of water. Use water spray,
dry chemical, carbon dioxide, or appropriate foam.

**** SECTION 6 - ACCIDENTAL RELEASE MEASURES ****

General Information: Use proper personal protective equipment as indicated
in Section 8.
Spills/Leaks:
Absorb spill using an absorbent, non-combustible material such as
earth, sand, or vermiculite. Do not use combustible materials such
as sawdust. Use a spark-proof tool. Provide ventilation.

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

Handling:
Wash thoroughly after handling. Use only in a well-ventilated area.
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. Keep away from heat, sparks and flame. Avoid
ingestion and inhalation. Wash clothing before reuse.
Storage:
Keep away from heat, sparks, and flame. Store in a tightly closed
container. Store in a cool, dry, well-ventilated area away from
incompatible substances. Keep refrigerated. (Store below 4C/39F.)

**** 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# 128-37-0:

Belgium - TWA: 10 mg/m3 VLE
France - VME: 10 mg/m3 VME
Germany: 10 mg/m3 TWA (inhalable fraction)
Malaysia: 10 mg/m3 TWA
Netherlands: 10 mg/m3 MAC
CAS# 637-50-3:


Personal Protective Equipment

Eyes:
Wear appropriate protective eyeglasses or chemical
safety goggles as described by OSHA's eye and face
protection regulations in 29 CFR 1910.133 or European
Standard EN166.
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 a respirator's use.

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

Physical State: Liquid
Color: clear very faint yellow
Odor: None reported.
pH: Not available.
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: 172.0 - 173.0 deg C @ 754.00m
Freezing/Melting Point: Not available.
Autoignition Temperature: Not applicable.
Flash Point: 60 deg C ( 140.00 deg F)
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature: Not available.
Solubility in water: Not available.
Specific Gravity/Density: .9150g/cm3
Molecular Formula: C9H10
Molecular Weight: 118.18

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

Chemical Stability:
Stable at room temperature in closed containers under normal storage
and handling conditions.
Conditions to Avoid:
Incompatible materials, ignition sources, excess heat, strong
oxidants.
Incompatibilities with Other Materials:
Strong acids, 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# 128-37-0: GO7875000
CAS# 637-50-3: DA8400000
LD50/LC50:
CAS# 128-37-0: Draize test, rabbit, eye: 100 mg/24H Moderate; Draize
test, rabbit, skin: 500 mg/48H Moderate; Oral, mouse: LD50 = 650
mg/kg; Oral, mouse: LD50 = 1040 mg/kg; Oral, rabbit: LD50 = 2100
mg/kg; Oral, rat: LD50 = 890 mg/kg.
CAS# 637-50-3: Oral, rat: LD50 = 3600 mg/kg.
Carcinogenicity:
Butylated hydroxytoluene -
Not listed by ACGIH, IARC, or NTP.
beta-Methylstyrene -
Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.

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



**** 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: XI
Risk Phrases:
R 36/37 Irritating to eyes and respiratory system.
Safety Phrases:
WGK (Water Danger/Protection)
CAS# 128-37-0: 1
CAS# 637-50-3: No information available.
Canada
CAS# 128-37-0 is listed on Canada's DSL List.
CAS# 128-37-0 is listed on Canada's Ingredient Disclosure List.
CAS# 637-50-3 is not listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 128-37-0 is listed on the TSCA inventory.
CAS# 637-50-3 is not listed on the TSCA inventory.
It is for research and development use only.

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

Text for R-phrases from Section 2
MSDS Creation Date: 1/02/1998 Revision #7 Date: 6/11/2003

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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Beta-Alanine, 98% 107-95-9
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Ethanesulfonic Acid, 99% 594-45-6
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m-Phenetidine, 98% 621-33-0
4-Dimethylaminobenzaldehyde, 98% 100-10-7
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1,1,2,2-Tetrachloroethane, 97% 79-34-5
p-Phenylenediamine, 99+% 106-50-3
Hemin, bovine, crystalline, 98% 16009-13-5
2,6-Dimethylphenol, P.A. 576-26-1
beta-Methylstyrene, 99% trans, stabilized with 0.01% BHT 128-37-0
Diethyl Sulfate, 99% 64-67-5
3,5-Diiodosalicylic Acid, 97% (HPLC) 133-91-5
2-Sulfobenzoic Acid Cyclic Anhydride, Tech 81-08-3
1,5-Pentanediol, 98% 111-29-5
Dibenzyl Phosphate, 99% 1623-08-1
2-Methyl-1-undecene, 99+% 18516-37-5
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3,3',4,4'-Benzophenonetetracarboxylic dianhydride, 96% 2421-28-5
trans-Cinnamaldehyde, 99% 104-55-2
Fullerene C70, 99+% (HPLC) 115383-22-7
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3-Nitrobenzyl chloride, 97+% (gc) 619-23-8
2,6-Diethylaniline, 98% 579-66-8
1,1,1-Trichloroethane, 93.5%, stabilized with ca. 5% 1,4-dioxane 71-55-6
Trimethyl Phosphate, 97% 512-56-1
2-(5-Bromo-2-Pyridylazo)-5-(Diethylamino)- Phenol, 97% 14337-53-2
Beta-Cyclodextrin Hydrate, 99% (HPLC) 68168-23-0
3,3'-Diethylthiadicarbocyanine Iodide, 99% (UV-VIS) 514-73-8
4-Methyl-1-cyclohexene, 99% 591-47-9
Mesityl oxide, 99%, mixt.of alpha- and bet a isomers(ca.93% alpha) 141-79-7
Butyl acrylate, 99+%, stabilized with 20 ppm MEHQ 141-32-2
Methyl diphenylphosphine, 99% 1486-28-8
2,5-Di-tert-butylhydroquinone 88-58-4
Orcinol, Monohydrate (Pract), 95% (UV-Vis) 6153-39-5
1-Iodohexane, 98+%,stabilized over copper 638-45-9
Octadecane, 99+% (gc) 593-45-3
Pamoic Acid, Disodium Salt Monohydrate, 98% (UV-Vis) 6640-22-8
Potassium fluoride 7789-23-3

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