6253 Styrene Monomer - Total Refining & Chemicals

Material Safety Data Sheet
Section 1. Chemical Product and Company Identification
Product name
Supplier
Chemical Family Aromatic hydrocarbon.
CAS Registry
Number
Synonym
Styrene Monomer
stabilized
Total Petrochemicals & Refining USA, Inc.
P O Box 674411
Houston,TX 77267-4411
100-42-5
In Case of
Emergency
Technical
Information
MSDS#
Validation
Date
Print Date
Chemtrec:
(800) 424-9300
Total Petrochemicals & Refining USA, Inc.:
(800) 322-3462
For non-emergency product information:
email product.stewardship@total.com
BC0009 (EN)
8/12/2014
8/12/2014
Styrene; Benzene, ethenyl-; ethenylbenzene; phenylethylene; vinylbenzene;
Section 2. Hazards Identification
Emergency Overview
FLAMMABLE LIQUID AND VAPOR.
VAPOR MAY CAUSE FLASH FIRE.
HAZARDOUS POLYMERIZATION CAN OCCUR
ASPIRATION HAZARD IF SWALLOWED- CAN ENTER LUNGS AND CAUSE DAMAGE
MAY BE HARMFUL IF ABSORBED THROUGH SKIN.
CAUSES EYE IRRITATION.
MAY CAUSE RESPIRATORY TRACT AND SKIN IRRITATION.
MAY CAUSE DAMAGE TO THE FOLLOWING ORGANS: LUNGS, CENTRAL NERVOUS
SYSTEM, RESPIRATORY TRACT, SKIN, EYES, LIVER.
Routes of Entry
Absorbed through skin. Dermal contact. Eye contact. Inhalation. Ingestion.
Potential Acute Health Effects
Eyes Causes eye irritation. Vapor may be irritating to eyes. Inflammation of the eye is characterized
by redness, watering and itching. At 200 ppm, styrene may cause tearing (lacrimation) and
severe eye irritation.
Skin
Inhalation
Ingestion
Absorbed through skin. May be harmful if absorbed through skin. May cause skin irritation.
Skin inflammation is characterized by itching, scaling, reddening or, occasionally, blistering.
Prolonged skin contact may cause dermatitis with drying and cracking of skin.
May cause respiratory irritation. Can cause central nervous system (CNS) depression. Other
effects include respiratory depression, dizziness, drowsiness, headache, loss of reflexes,
nausea, diarrhea, vomiting, central nervous system stimulation. High concentrations may
cause stupor and unconsciousness, followed by death caused by respiratory arrest.
Aspiration hazard if swallowed. Can enter lungs and cause damage. May be fatal if swallowed
and enters airways.
Toxicity by ingestion: Moderately toxic
Potential Chronic Health
Effects
Signs and symptoms of chronic exposure are similar to those of acute exposure.
May cause damage to the following organs: upper respiratory tract, throat, lungs, skin, liver,
central nervous system. At high exposure levels, styrene may cause hearing loss and vision
abnormalities.
CARCINOGENIC EFFECTS:
Styrene
Classified 2B (Possible for humans.) by IARC.
Classified "Reasonably anticipated to be a human carcinogen" by NTP.
Classified None. by OSHA.
Classified A4 (Not classifiable for humans or animals.) by ACGIH.
Ethylbenzene
Total Petrochemicals & Refining USA, Inc.

Styrene Monomer
stabilized
_
Classified 2B (Possible for humans.) by IARC
See Section 11 for more detailed information on chronic effects.
Page: 2/9
Medical Conditions
Aggravated by
Overexposure
Overexposure /Signs/
Symptoms
Pre-existing disorders involving any target organs mentioned in this MSDS as being at risk
may be aggravated by over-exposure to this product.
Skin: dermatitis
Eye: conjunctivitis, burns
CNS: respiratory depression, dizziness, drowsiness, headache, and loss of reflexes
Other: decreased urination, , nausea, diarrhea, and vomiting
See Toxicological Information (Section 11)
Section 3. Composition and Information on Ingredients
Occupational exposure limits, if available, are listed in Section 8.
Substance Name
CAS #
% by Weight
Styrene 100-42-5 > 99
ethylbenzene 100-41-4

Styrene Monomer
stabilized
Special Remarks on Fire
Hazards
Special Remarks on
Explosion Hazards
Page: 3/9
_
Flammable liquid. May autopolymerize if uninhibited, heated or involved in a fire.
Autopolymerization will be accompanied by evolution of heat, which may cause release of
styrene vapors forming flammable mixtures with air. Avoid heat, high temperatures, and static
electricity.
Vapors are heavier than air and may spread along floors. Vapor may travel a considerable
distance to source of ignition and flash back.
Not classified as an "Explosive" under the OSHA Hazard Communication Standard or by the
DOT (see section 14 for DOT Hazardous Material Classification).
Section 6. Accidental Release Measures
Small Spill and Leak
Large Spill and Leak
Section 7. Handling and Storage
Handling
Storage
Warn personnel to move away.
Absorb with an inert material and put the spilled material in an appropriate waste disposal
container.
Contain spill and safely stop the flow.
Warn personnel to move away.
Eliminate all sources of ignition.
Ventilate.
Absorb with dry earth, sand or other non-combustible material.
Prevent entry into sewers, basements or confined areas. Dike if necessary. Dike spill area
and do not allow product to reach sewage system or surface or ground water.
FLAMMABLE LIQUID AND VAPOR. Keep away from sources of ignition. Keep in a cool, wellventilated
place. Manipulate in a well-ventilated area. Take precautionary measures against
electrostatic discharges. Ensure that eyewash stations and safety showers are close to the
workstation location.
Do not store for extended periods. Avoid plastic, copper, and copper alloy containers.
Hazardous auto-polymerization will be accompanied by evolution of heat, which may cause
release of styrene vapors forming flammable mixtures with air and a potential fire. To
prevent auto-polymerization of this material routinely monitor for percent polymer and
inhibitor. Add inhibitor as needed. The most commonly used inhibitor is tertiary-butylcatechol
in the 10-15 ppm concentration range. Higher concentrations may be needed.
Inhibitor needs greater than 15 ppm dissolved OXYGEN (O2) to prevent polymerization.
Do NOT blanket with nitrogen without providing means for keeping and checking a
minimum of 15 ppm of oxygen (O2) dissolved in liquid phase. Inhibitor depletion and risk
of polymerization will increase if product is stored under high temperatures, in the presence of
moisture, rust, or other impurities, or for extended periods.
Store below 84°F (29°C) in a dry, well-ventilated area. Storage temperature should to be
continuously monitored. If the temperature rises 1°C/day, it may be an early indication of autopolymerization
and the temperature should be monitored closely. Re-circulation of the
material may stop or decrease the rate of temperature rise. A 2-3°C/day temperature
increase is a typical indication of the onset of a runaway polymerization.
When used properly, the inhibitor works effectively with styrene in the liquid state, but it does
not prevent styrene polymerization in the vapor state. Styrene vapors may condense as
solids, plugging pressure relief devices, causing overpressure/rupture of storage containers
during runaway polymerization. Pressure relief devices must be checked and maintained on
a frequent and regular basis to ensure polymer build up does not prevent the device from
functioning properly.
Take precautionary measures against static discharges.
Ground all equipment containing material.
Avoid all possible sources of ignition (spark or flame).
Use materials for storage suitable for aromatic hydrocarbons for containers and transfer lines,
such as stainless steel or carbon steel.
Store away from and avoid contact with peroxides, oxidizing agents, acids and bases, copper
Total Petrochemicals & Refining USA, Inc.

Styrene Monomer
stabilized
and aluminium.
_
Page: 4/9
Extremely reactive or incompatible with chlorosulfonic acid and sulfuric acid.
All efforts should be made to prevent any leaks or spills. Storage tanks containing should be
engineered to prevent contact with water resources, as this material could contaminate the
water resources. Surface spills can reach groundwater through porous soil or cracked
surfaces. The storage tanks should be monitored regularly for leaks. Where spills or leaks are
possible, a comprehensive response plan should be developed and implemented.
Section 8. Exposure Controls/Personal Protection
Engineering Controls
Personal Protection
Protective Clothing
(Pictograms)
Provide exhaust ventilation or other engineering controls to keep the airborne concentrations
of vapors below their respective threshold limit value. Ensure that eyewash stations and
safety showers are proximal to the work-station location.
Eyes Safety glasses with side shields. Splash goggles or face shield may be necessary if handling
large amounts of material or heated material.
Body Flame retardant clothing covering the entire body.
Respiratory Vapor respirator. Be sure to use an approved/certified respirator or equivalent. Wear
appropriate respirator when ventilation is inadequate.
Hands Chemical-resistant gloves.
Feet Shoes.
Personal Protection in
Case of a Large Spill
Product Name
Splash goggles. Full suit. Vapor respirator. Boots. Gloves. A self contained breathing
apparatus should be used to avoid inhalation of the product. Suggested protective clothing
might not be sufficient; consult a specialist BEFORE handling this product.
Exposure Limits
Styrene ACGIH TLV (United States, 3/2012).
TWA: 20 ppm 8 hour(s).
STEL: 40 ppm 15 minute(s).
OSHA PEL Z2 (United States, 11/2006).
TWA: 100 ppm 8 hour(s).
CEIL: 200 ppm
AMP: 600 ppm 5 minute(s).
NIOSH REL (United States, 6/2009).
TWA: 50 ppm 10 hour(s).
STEL: 100 ppm 15 minute(s).
ethylbenzene OSHA PEL (United States, 11/2006).
TWA: 100 ppm 8 hour(s).
NIOSH REL (United States, 6/2009).
TWA: 100 ppm 10 hour(s).
STEL: 125 ppm 15 minute(s).
ACGIH TLV (United States, 3/2012).
TWA: 20 ppm 8 hour(s).
Consult local authorities for acceptable exposure limits.
Section 9. Physical and Chemical Properties
Physical State and Appearance
Color
Odor
Odor Threshold
Molecular Weight
Molecular Formula
Liquid.Clear
Colorless.
Aromatic.
0.01-0.1 ppm
104.14.
C8-H8
Total Petrochemicals & Refining USA, Inc.

Styrene Monomer
stabilized
Boiling/Condensation Point
145°C (293°F)
_
Page: 5/9
Melting/Freezing Point
Critical Temperature
Specific Gravity
Vapor Pressure
Vapor Density
Volatility
Evaporation Rate
VOC
LogKow
Ionicity (in Water)
Solubility in Water
May start to solidify at -31°C (-23.8°F) based on data for: Styrene.
373°C (703.4°F)
0.91 (Water = 1)
4.3 mm of Hg (@ 20°C)
3.6 (Air = 1)
100% (v/v).
0.49 compared to Butyl acetate.
100 (%)
The product is more soluble in oil; log(oil/water) = 3 Styrene
Non-ionic.
Very slightly soluble in the following materials: hot water.
The water solubility of styrene is 310 mg/L at 25°C.
Section 10. Stability and Reactivity
Stability and Reactivity
Conditions of Instability
Incompatibility with
Various Substances
Hazardous
Decomposition Products
Hazardous
Polymerization
Unstable.
Unstable at high temperatures & extended storage.
Extremely reactive or incompatible with chlorosulfonic acid and sulfuric acid.
Avoid contact with peroxides, oxidizing agents, acids and bases, copper and aluminium.
Carbon monoxide & carbon dioxide.
Section 11. Toxicological Information
Toxicity to Animals
Chronic Effects on
Humans
HAZARDOUS POLYMERIZATION CAN OCCUR. The presence of copper or copper alloys
may increase polymerization rate. Lack of inhibitor may also cause styrene to polymerize.
Heat from spontaneous polymerization will be accompanied by evolution of heat, which
may cause release of styrene vapors forming flammable mixtures with air and a
potential fire.
See Section 7: Handling and Storage for necessary measures to prevent spontaneous
polymerization.
Product/ingredient name Result Species Dose Exposure
styrene LD50 Intraperitoneal Rat 898 mg/kg -
LD50 Oral Rat 5000 mg/kg -
LD50 Oral Rat 2650 mg/kg -
LC50 Inhalation Vapor Rat 11800 mg/m3 4 hours
LC50 Inhalation Gas. Rat 2770 ppm 4 hours
ethylbenzene LD50 Dermal Rabbit >5000 mg/kg -
LD50 Dermal Rabbit 17800 uL/kg -
LD50 Oral Rat 3500 mg/kg -
LC50 Inhalation Vapor Rat 55000 mg/m3 2 hours
CARCINOGENIC EFFECTS:
Styrene
Classified 2B (Possible for humans.) by IARC.
Classified "Reasonably anticipated to be a human carcinogen" by NTP.
Classified None. by OSHA.
Classified A4 (Not classifiable for humans or animals.) by ACGIH.
Ethylbenzene
Classified 2B (Possible for humans.) by IARC
Total Petrochemicals & Refining USA, Inc.

Styrene Monomer
stabilized
_
Page: 6/9
The cancer causing potential of styrene has been studied extensively. Based on the current
scientific evidence, regulators around the world have concluded that exposure to styrene does
not increase the general population’s risk of cancer. Studies covering more than 55,000
workers in the United States and Europe over a 45-year period in styrene-related industries
collectively show that exposure to styrene in the workplace does not increase the risk of
cancer, even when exposure to styrene is typically much higher than for the general
population.
There are studies that indicate a relationship between styrene exposure and an increase in
lung tumors in mice. However, there are significant differences in how styrene is metabolized
in mice and in humans. Because of these differences in the metabolism of styrene, these
studies are not relevant to humans.
TERATOGENIC EFFECTS:
Comprehensive reviews of the developmental and reproductive data indicate that styrene is
not teratogenic (i.e. causing birth defects), and provide little indication that styrene exposure
could lead to any developmental or reproductive toxicity, including potential endocrine
disrupter effects.
There are reports of increases in embryonic, foetal, and neonatal death in rodents, but these
effects are restricted to exposures were extremely high compare to expected human
exposures and were maternally toxic. The bulk of current information suggests that styrene
does not exert any specific developmental toxicities.
The results of a definitive two-generation reproductive study and a developmental/
neurotoxicity study, both in rats, show little evidence of any reproductive or developmental
effect of concern.
OTHER CHRONIC EFFECTS
May cause: Hearing Loss at high exposure levels; Visual Alterations at high exposure levels.
Other Toxic Effects on
Humans
Special Remarks on
Toxicity to Animals
Aspiration hazard if swallowed. Can enter lungs and cause damage. May be fatal if swallowed
and enters airways. May cause skin, eye and respiratory irritation. Harmful if absorbed
through the skin. May be harmful if absorbed through skin.
May cause damage to the following organs: upper respiratory tract, throat., lungs, skin, liver,
eye, lens or cornea., central nervous system.
Standard Draize Test: Rabbit, Dose 100 mg, Eyes, Severe Reaction.
Section 12. Ecological Information
Ecotoxicity
Product/ingredient name Result Species Exposure
Styrene Monomer Acute EC50 4.7 mg/L Daphnia 48 hours
Acute EC50 0.56 mg/L Algae 48 hours
Acute LC50 29 mg/L Fish 96 hours
Acute LC50 25.05 mg/L Fish 96 hours
Acute LC50 10 mg/L Fish 96 hours
Acute LC50 4.02 mg/L Fish 96 hours
Biodegradable/OECD
Volatizes rapidly and biodegrades in water. Biodegrades in soil.
Mobility
Based upon a vapor pressure of 4.3 mm of Hg (@ 20°C), styrene released to environmental
is expect to volatize to the atmosphere.
Styrene is expected to volatilize rapidly from water surfaces. A limited amount of styrene may
remain in the water (the solubility of styrene in water is 0.310 g/L at 25°C).
The Koc of styrene is estimated as 960. This estimated Koc value suggests that styrene is
expected to have low mobility in soil.
Total Petrochemicals & Refining USA, Inc.

Styrene Monomer
stabilized
Section 13. Disposal Considerations
_
Page: 7/9
Waste Information
Recycle to process, if possible. Recover free liquid. Transfer to an approved disposal area in
accordance with federal, state, and local regulations.
Waste Stream
Consult your local or regional authorities.
This material, as supplied, when discarded or disposed of, is a hazardous waste according to
Federal regulations (40 CFR 261) due to its ignitability. Soil, water, container residues and
spill cleanup materials contaminated with this material may be classified as hazardous waste.
Under RCRA, it is the responsibility of the user of the product to determine, at the time of
disposal, whether the material is a hazardous waste.
The transportation, storage, treatment and disposal of RCRA waste material must be
conducted in compliance with 40 CFR 262, 263, 264. 268, and 270. Disposal can occur only
in properly permitted facilities.
Chemical additions, processing or otherwise altering this material may make the waste
management information presented in the MSDS incomplete, inaccurate, or otherwise
inappropriate.
Classification: RCRA Harzardous Waste No. D001
Section 14. Transport Information
(for domestic bulk shipments, non-bulk shipments may differ)
DOT Classification for
Bulk Shipments (non bulk
shipments may differ)
Proper Shipping Name/
Description
UN Number
Packing Group
Marine Pollutant
DOT CLASS 3: Flammable liquid.
UN 2055, Styrene monomer, stabilized, 3, PG III RQ
UN2055
III
Not listed in Appendix B to 49CFR172.101
Hazardous Substances
Reportable Quantity
Special Provisions for
Transport
TDG Classification
IMO/IMDG Classification
ICAO/IATA Classification
USCG Proper Shipping
Name
Transport in bulk
according to Annex II of
MARPOL 73/78 and the
IBC Code
Styrene 1000 lbs. (454 kg); Ethylbenzene 1000 lbs. (454 kg)
See codes as shown in 49 CFR 172.101 column 7.
TDG Class 3: Flammable liquid.
3
3
Styrene
Product name: Styrene monomer (stabilized)
Pollution category: Y
Ship type: 2G
Section 15. Regulatory Information
HCS Classification
U.S. Federal Regulations
Flammable liquid
Carcinogen
Target organ effects
TSCA 8(a) PAIR: Ethylbenzene
United States inventory (TSCA 8b): All components are listed or exempted.
Total Petrochemicals & Refining USA, Inc.

Styrene Monomer
stabilized
International Regulations
Clean Water Act (CWA) 307: ethylbenzene
Clean Water Act (CWA) 311: Styrene
_
Page: 8/9
SARA 302/304/311/312 extremely hazardous substances: To the best of our knowledge,
there are no substances that would be at reportable levels for this regulation in this product.
SARA 302/304 emergency planning and notification: Styrene
SARA 302/304/311/312 hazardous chemicals: Styrene
SARA 311/312 MSDS distribution - chemical inventory - hazard identification: Styrene:
Fire hazard, reactive, Immediate (acute) health hazard, Delayed (chronic) health hazard
SARA 313 Supplier Notification
This product contains the following EPCRA section 313 chemicals subject to the reporting
requirements of section 313 of the Emergency Planning and Community Right-to-Know Act
of 1986 (40 CFR 372 -Table 372.65).
Product name CAS number Concentration (%)
Styrene 100-42-5 >99
ethylbenzene 100-41-4

Styrene Monomer
stabilized
Page: 9/9
_
CALIFORNIA PROPOSITION 65: This product contains a chemical or chemicals known to
the state of California to cause cancer, birth defects or other reproductive harm.
Section 16. Other Information
Label requirements
FLAMMABLE LIQUID AND VAPOR.
VAPOR MAY CAUSE FLASH FIRE.
HAZARDOUS POLYMERIZATION CAN OCCUR
ASPIRATION HAZARD IF SWALLOWED- CAN ENTER LUNGS AND CAUSE DAMAGE
MAY BE HARMFUL IF ABSORBED THROUGH SKIN.
CAUSES EYE IRRITATION.
MAY CAUSE RESPIRATORY TRACT AND SKIN IRRITATION.
MAY CAUSE DAMAGE TO THE FOLLOWING ORGANS: LUNGS, CENTRAL NERVOUS
SYSTEM, RESPIRATORY TRACT, SKIN, EYES, LIVER.
Hazardous Material
Information System
(U.S.A.)
Health
Fire Hazard
Reactivity
Personal Protection
*
2
3
2
G
National Fire
Protection
Association
(U.S.A.)
Health
2
3
2
Fire Hazard
Reactivity
Specific Hazard
References
Other Special
Considerations
Validated on 8/12/2014.
EPA OPPT Chemical Fact Sheet EPA749F95019a
HSDB - Hazardous Substances Data Bank
RTECS - Registry of Toxic Effects of Chemicals Substances
NIOSH Pocket Guide
TOTAL PETROCHEMICALS (Europe) SDS
ATSDR ToxProfiles 2008
SAX, N.I. Dangerous Properties of Industrial Materials.
For additional information on the safe use and handling of styrene, refer to the CEFIC Styrene
Monomer: Environmental, Health, Safety, Transport and Storage guidelines located on the Internet (
http://www.cefic.org/Documents/IndustrySupport/Transport-and-Logistics/Styrene-Monomer-
Environmental-health-Safety-and-Distribution-Guidelines.pdf).
Printed 8/12/2014.
Chemtrec:
(800) 424-9300
Total Petrochemicals & Refining USA, Inc.:
(800) 322-3462
Notice to Reader
The information contained in this Material Safety Data Sheet (MSDS) / Safety Data Sheet (SDS) is believed by Total Petrochemicals & Refining USA, Inc. (TPRI)
to be accurate on the date issued. However, materials may present unknown hazards and should be used with caution. Final determination of suitability and use
of any material is the sole responsibility of the user. Neither TPRI nor any of its subsidiaries or affiliated companies assumes any liability whatsoever for the
accuracy or completeness of the information contained herein or reliance thereto. If the material is repackaged, the user is responsible and must ensure that
proper health, safety and other necessary information is included with the material and/or on the container. NO WARRANTIES OF ANY KIND, EITHER
EXPRESSED OR IMPLIED, INCLUDING WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, ARE MADE
REGARDING THE MATERIALS OR THE INFORMATION CONTAINED IN THIS SDS. ALTERATION OF THIS DOCUMENT IS STRICTLY
PROHIBITED.
MSDS Name Styrene Monomer MSDS Code STYRENE_MONOMER
34.01
To obtain an electronic copy of this MSDS, please email: product.stewardship@total.com.
Total Petrochemicals & Refining USA, Inc.