Chemical Datasheet
STYRENE MONOMER, INHIBITED |
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Chemical Identifiers
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UN/NA Number - The United Nations-North America number (also called UN number or DOT number). 4-digit number identifying an individual chemical or group of chemicals with similar characteristics. Required on shipping papers; often shown on placards or labels. This numbering system was developed by the U.S. Department of Transportation, and then became the UN standard system for classifying hazardous materials.
CAS Number - Chemical Abstracts Service registry number. Unique identification number assigned to this chemical by the American Chemical Society.
CHRIS Code - 3-letter code used by the U.S. Coast Guard to identify individual chemicals included in its CHRIS (Chemical Hazards Response Information System) manual.
DOT Hazard Label - U.S. Department of Transportation hazard warning label for the chemical (such as flammable liquid or corrosive). This label must be displayed on shipped packages, railroad tank cars, and tank trucks according to specifications described in 49 CFR 172.
NFPA 704 - Text description of the diamond-shaped placard, which contains codes indicating the level of the chemical's health, flammability, and reactivity hazards, along with special hazards such as water- and air-reactivity. (The NFPA 704 diamond is also shown at the top of the datasheet.) See a guide to the NFPA diamond.
General Description - Brief description of the chemical's general appearance, behavior, and hazardousness.
List of data sources.
CAS Number - Chemical Abstracts Service registry number. Unique identification number assigned to this chemical by the American Chemical Society.
CHRIS Code - 3-letter code used by the U.S. Coast Guard to identify individual chemicals included in its CHRIS (Chemical Hazards Response Information System) manual.
DOT Hazard Label - U.S. Department of Transportation hazard warning label for the chemical (such as flammable liquid or corrosive). This label must be displayed on shipped packages, railroad tank cars, and tank trucks according to specifications described in 49 CFR 172.
NFPA 704 - Text description of the diamond-shaped placard, which contains codes indicating the level of the chemical's health, flammability, and reactivity hazards, along with special hazards such as water- and air-reactivity. (The NFPA 704 diamond is also shown at the top of the datasheet.) See a guide to the NFPA diamond.
General Description - Brief description of the chemical's general appearance, behavior, and hazardousness.
List of data sources.
| UN/NA Number | CAS Number | CHRIS Code | DOT Hazard Label |
|---|---|---|---|
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| NFPA 704: |
|
General Description
A clear colorless to dark liquid with an aromatic odor. Flash point 90°F. Density 7.6 lb/gal. Vapors heavier than air and irritating to the eyes and mucous membranes. Subject to polymerization. If the polymerization takes place inside a closed container, the container may rupture violently. Less dense than water and insoluble in water. Used to make plastics, paints, and synthetic rubber.
Hazards
)
Reactivity Alerts - Special alerts if the chemical is especially reactive
(see list of reactivity alerts).
Air & Water Reactions - Special alerts if the chemical reacts with air, water, or moisture.
Fire Hazard - Description of the chemical's fire hazards (such as flammability, explosion risk, or byproducts that may evolve if the chemical is burned).
Health Hazard - Description of the chemical's health hazards (such as toxicity, flammability, or corrosivity).
Reactivity Profile - Description of the chemical's potential reactivity with other chemicals, air, and water. Also includes any other intrinsic reactive hazards (such as polymerizable or peroxidizable).
Reactive Groups - List of reactive groups that the chemical is assigned to, based on its known chemistry. Reactive groups are categories of chemicals that react in similar ways because their chemical structures are similar. Reactive groups are used to predict reactivity when you add a chemical to MyChemicals. Read more about reactive groups.
List of data sources.
Air & Water Reactions - Special alerts if the chemical reacts with air, water, or moisture.
Fire Hazard - Description of the chemical's fire hazards (such as flammability, explosion risk, or byproducts that may evolve if the chemical is burned).
Health Hazard - Description of the chemical's health hazards (such as toxicity, flammability, or corrosivity).
Reactivity Profile - Description of the chemical's potential reactivity with other chemicals, air, and water. Also includes any other intrinsic reactive hazards (such as polymerizable or peroxidizable).
Reactive Groups - List of reactive groups that the chemical is assigned to, based on its known chemistry. Reactive groups are categories of chemicals that react in similar ways because their chemical structures are similar. Reactive groups are used to predict reactivity when you add a chemical to MyChemicals. Read more about reactive groups.
List of data sources.
Reactivity Alerts
- Highly Flammable
- Polymerizable
- Peroxidizable Compound
Air & Water Reactions
Highly flammable. Insoluble in water.
Fire Hazard
Behavior in Fire: Vapor is heavier than air and may travel considerable distance to a source of ignition and flash back. At elevated temperatures such as in fire conditions, polymerization may take place which may lead to container explosion. (USCG, 1999)
Health Hazard
Moderate irritation of eyes and skin. High vapor concentrations cause dizziness, drunkeness, and anesthesia. (USCG, 1999)
Reactivity Profile
STYRENE MONOMER is a colorless, oily liquid, moderately toxic, flammable. A storage hazard above 32°C, involved in several industrial explosions caused by violent, exothermic polymerization [Bond, J., Loss Prev. Bull., 1985, (065), p. 25]. Polymerization becomes self-sustaining above 95°C [MCA SD-37, 1971]. Presence of an inhibitor lessens but does not eliminate the possibility of unwanted polymerization. Violent polymerization leading to explosion may be initiated by peroxides (e.g., di-tert-butyl peroxide, dibenzoyl peroxide), butyllithium, azoisobutyronitrile. Reacts violently with strong acids (sulfuric acid, oleum, chlorosulfonic acid), strong oxidizing agents [Lewis, 3rd ed., 1993, p. 1185]. Reacts with oxygen above 40°C to form explosive peroxide [Barnes, C. E. et al., J. Amer. Chem. Soc., 1950, 72, p. 210]. Oxidizes readily in air to form unstable peroxides that may explode spontaneously [Bretherick 1979 p.151-154, 164]. Mixing styrene in equal molar portions with any of the following substances in a closed container caused the temperature and pressure to increase: chlorosulfonic acid, oleum, and sulfuric acid [NFPA 1991].
Belongs to the Following Reactive Group(s)
Response Recommendations
)
Firefighting - Response recommendations if the chemical is on fire (or near a fire).
Non-Fire Response - Response recommendations if the chemical isn't on fire (or near a fire).
Protective Clothing - Recommendations for protective gear and, in some cases, a table of breakthrough times for protective materials.
First Aid - Recommended first aid treatment for people exposed to the chemical.
List of data sources.
Non-Fire Response - Response recommendations if the chemical isn't on fire (or near a fire).
Protective Clothing - Recommendations for protective gear and, in some cases, a table of breakthrough times for protective materials.
First Aid - Recommended first aid treatment for people exposed to the chemical.
List of data sources.
Firefighting
Do not extinguish fire unless flow can be stopped. Use water in flooding quantities as fog. Solid streams of water may spread fire. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible. Use foam, dry chemical, or carbon dioxide. (AAR, 2003)
Non-Fire Response
Keep sparks, flames, and other sources of ignition away. Keep material out of water sources and sewers. Build dikes to contain flow as necessary. Attempt to stop leak if without undue personnel hazard. Use water spray to knock-down vapors. Land spill: Dig a pit, pond, lagoon, holding area to contain liquid or solid material. Dike surface flow using soil, sand bags, foamed polyurethane, or foamed concrete. Absorb bulk liquid with fly ash, cement powder, or commercial sorbents. Apply "universal" gelling agent to immobilize spill. Apply approriate foam to diminish vapor and fire hazard. Water spill: Use natural barriers or oil spill control booms to limit spill travel. Use surface active agent (e.g. detergent, soaps, alcohols), if approved by epa. Inject "universal" gelling agent to solidify encircled spill and increase effectiveness of booms. If dissolved, in region of 10 ppm or greater concentration, apply activated carbon at ten times the spilled amount. Remove trapped material with suction hoses. Use mechanical dredges or lifts to remove immobilized masses of pollutants and precipitates. (AAR, 2003)
Protective Clothing
Skin: Wear appropriate personal protective clothing to prevent skin contact.
Eyes: Wear appropriate eye protection to prevent eye contact.
Wash skin: The worker should immediately wash the skin when it becomes contaminated.
Remove: Work clothing that becomes wet should be immediately removed due to its flammability hazard(i.e. for liquids with flash point < 100°F)
Change: No recommendation is made specifying the need for the worker to change clothing after the work shift. (NIOSH, 2003)
Eyes: Wear appropriate eye protection to prevent eye contact.
Wash skin: The worker should immediately wash the skin when it becomes contaminated.
Remove: Work clothing that becomes wet should be immediately removed due to its flammability hazard(i.e. for liquids with flash point < 100°F)
Change: No recommendation is made specifying the need for the worker to change clothing after the work shift. (NIOSH, 2003)
_____Dupont Average Standardized Breakthrough Times_____
(for STYRENE)
Tychem® BR
greater than 480 min. (concentration: 95+%)
Tychem® CPF2
12 min. (concentration: 99%)
Tychem® CPF3
greater than 480 min. (concentration: 99%)
Tychem® CPF4
greater than 480 min. (concentration: 99%)
Tychem® F
greater than 480 min. (concentration: 95+%)
Tychem® LV
greater than 480 min. (concentration: 95+%)
Tychem® Reflector®
greater than 480 min. (concentration: 95+%)
Tychem® Responder®
greater than 480 min. (concentration: 99%)
Tychem® Responder® CSM
greater than 480 min. (concentration: 99%)
Tychem® SL
12 min. (concentration: 95+%)
Tychem® ThermoPro
greater than 480 min. (concentration: 100%)
Tychem® TK
greater than 480 min. (concentration: 95+%) (DuPont, 2008)
Copyrighted information of E.I. du Pont de Nemours and Company. Tychem® is a registered trademark of E.I. du Pont de Nemours and Company.
First Aid
EYES: First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop.
SKIN: IMMEDIATELY flood affected skin with water while removing and isolating all contaminated clothing. Gently wash all affected skin areas thoroughly with soap and water. IMMEDIATELY call a hospital or poison control center even if no symptoms (such as redness or irritation) develop. IMMEDIATELY transport the victim to a hospital for treatment after washing the affected areas.
INHALATION: IMMEDIATELY leave the contaminated area; take deep breaths of fresh air. IMMEDIATELY call a physician and be prepared to transport the victim to a hospital even if no symptoms (such as wheezing, coughing, shortness of breath, or burning in the mouth, throat, or chest) develop. Provide proper respiratory protection to rescuers entering an unknown atmosphere. Whenever possible, Self-Contained Breathing Apparatus (SCBA) should be used; if not available, use a level of protection greater than or equal to that advised under Protective Clothing.
INGESTION: DO NOT INDUCE VOMITING. If the victim is conscious and not convulsing, give 1 or 2 glasses of water to dilute the chemical and IMMEDIATELY call a hospital or poison control center. Be prepared to transport the victim to a hospital if advised by a physician. If the victim is convulsing or unconscious, do not give anything by mouth, ensure that the victim's airway is open and lay the victim on his/her side with the head lower than the body. DO NOT INDUCE VOMITING. IMMEDIATELY transport the victim to a hospital.
OTHER: Since this chemical is a known or suspected carcinogen you should contact a physician for advice regarding the possible long term health effects and potential recommendation for medical monitoring. Recommendations from the physician will depend upon the specific compound, its chemical, physical and toxicity properties, the exposure level, length of exposure, and the route of exposure. (NTP, 1992)
SKIN: IMMEDIATELY flood affected skin with water while removing and isolating all contaminated clothing. Gently wash all affected skin areas thoroughly with soap and water. IMMEDIATELY call a hospital or poison control center even if no symptoms (such as redness or irritation) develop. IMMEDIATELY transport the victim to a hospital for treatment after washing the affected areas.
INHALATION: IMMEDIATELY leave the contaminated area; take deep breaths of fresh air. IMMEDIATELY call a physician and be prepared to transport the victim to a hospital even if no symptoms (such as wheezing, coughing, shortness of breath, or burning in the mouth, throat, or chest) develop. Provide proper respiratory protection to rescuers entering an unknown atmosphere. Whenever possible, Self-Contained Breathing Apparatus (SCBA) should be used; if not available, use a level of protection greater than or equal to that advised under Protective Clothing.
INGESTION: DO NOT INDUCE VOMITING. If the victim is conscious and not convulsing, give 1 or 2 glasses of water to dilute the chemical and IMMEDIATELY call a hospital or poison control center. Be prepared to transport the victim to a hospital if advised by a physician. If the victim is convulsing or unconscious, do not give anything by mouth, ensure that the victim's airway is open and lay the victim on his/her side with the head lower than the body. DO NOT INDUCE VOMITING. IMMEDIATELY transport the victim to a hospital.
OTHER: Since this chemical is a known or suspected carcinogen you should contact a physician for advice regarding the possible long term health effects and potential recommendation for medical monitoring. Recommendations from the physician will depend upon the specific compound, its chemical, physical and toxicity properties, the exposure level, length of exposure, and the route of exposure. (NTP, 1992)
Physical Properties
)
This section contains physical properties, flammability limits, and toxic thresholds for this chemical (see
definitions of each property).
More property data is available for common chemicals.
Guide to toxic levels of concern (AEGLs, ERPGs, TEELs, and IDLH).
List of data sources.
Guide to toxic levels of concern (AEGLs, ERPGs, TEELs, and IDLH).
List of data sources.
| Molecular Formula: |
|
Flash Point:
88.0 ° F
(NTP, 1992)
Lower Explosive Limit:
1.1 %
(NTP, 1992)
Upper Explosive Limit:
6.1 %
(NTP, 1992)
Autoignition Temperature:
914.0 ° F
(USCG, 1999)
Melting Point:
-24 to -23 ° F
(NTP, 1992)
Vapor Pressure:
4.3 mm Hg
at 59.0 ° F
; 9.5 mm Hg at 86° F; 10 mm Hg at 95° F
(NTP, 1992)
Vapor Density:
1.1
(NTP, 1992)
Specific Gravity:
0.906
at 68.0 ° F
(USCG, 1999)
Boiling Point:
293-295 ° F
at 760 mm Hg
(NTP, 1992)
Molecular Weight:
104.16
(NTP, 1992)
Water Solubility:
<1 mg/mL
at 66° F
(NTP, 1992)
AEGL:
data unavailable
| ERPG-1 | ERPG-2 | ERPG-3 |
|---|---|---|
| 50.0 ppm | 250.0 ppm | 1000.0 ppm |
| (AIHA, 2008) | ||
TEEL:
data unavailable
IDLH:
700.0 ppm
(NIOSH, 2003)
Regulatory Information
)
Regulatory Names - Names under which this chemical is regulated under several U.S. federal laws: CAA (Clean Air Act of 1990), CERCLA (Comprehensive Environmental Response, Compensation, and Liability Act of 1980, also known as Superfund), EPCRA (Emergency Planning and Community Right-to-Know Act, also known as SARA Title III), and RCRA (Resource Conservation and Recovery Act of 1976).
CAA RMP - Indicates whether this chemical is regulated under Section 112(r) of the Clean Air Act, which lists about 100 toxic, flammable, or explosive hazardous substances. (Section 112(r) mandates the Risk Management Plan regulations.) For listed chemicals, the Threshold Quantity (from 40 CFR 68) is also shown. Facilities that use more than the threshold quantity of a listed chemical in a process are subject to the CAA accidental release prevention provisions.
CERCLA - Indicates whether this chemical is listed as a hazardous substance under CERCLA. For listed chemicals, the Reportable Quantity (from 40 CFR 302) is also shown. Facilities that spill more than the reportable quantity of a listed chemical must report it to federal, state, and local governments.
EHS (EPCRA 302) - Indicates whether this chemical is listed as an Extremely Hazardous Substance under Section 302 of EPCRA. For listed chemicals, the Threshold Planning Quantity (from 40 CFR 355) is also shown. Facilities that store more than the threshold quantity of an EHS chemical must meet the reporting, community right-to-know, and emergency planning requirements of EPCRA.
TRI (EPCRA 313) - Indicates whether this chemical is listed as a toxic chemical under Section 313 (Toxics Release Inventory) of EPCRA. Facilities that manufacture, store, or use significant amounts of Section 313 chemicals may be required to submit annual reports about any releases into the environment (see 40 CFR 372).
RCRA Chemical Code - 4-character identification code assigned to this substance under RCRA.
CAA RMP - Indicates whether this chemical is regulated under Section 112(r) of the Clean Air Act, which lists about 100 toxic, flammable, or explosive hazardous substances. (Section 112(r) mandates the Risk Management Plan regulations.) For listed chemicals, the Threshold Quantity (from 40 CFR 68) is also shown. Facilities that use more than the threshold quantity of a listed chemical in a process are subject to the CAA accidental release prevention provisions.
CERCLA - Indicates whether this chemical is listed as a hazardous substance under CERCLA. For listed chemicals, the Reportable Quantity (from 40 CFR 302) is also shown. Facilities that spill more than the reportable quantity of a listed chemical must report it to federal, state, and local governments.
EHS (EPCRA 302) - Indicates whether this chemical is listed as an Extremely Hazardous Substance under Section 302 of EPCRA. For listed chemicals, the Threshold Planning Quantity (from 40 CFR 355) is also shown. Facilities that store more than the threshold quantity of an EHS chemical must meet the reporting, community right-to-know, and emergency planning requirements of EPCRA.
TRI (EPCRA 313) - Indicates whether this chemical is listed as a toxic chemical under Section 313 (Toxics Release Inventory) of EPCRA. Facilities that manufacture, store, or use significant amounts of Section 313 chemicals may be required to submit annual reports about any releases into the environment (see 40 CFR 372).
RCRA Chemical Code - 4-character identification code assigned to this substance under RCRA.
| Regulatory Names: |
|
CAA RMP:
Not a regulated chemical.
CERCLA:
Regulated chemical with a Reportable Quantity of 1000 pounds.
EHS (EPCRA 302):
Not a regulated chemical.
TRI (EPCRA 313):
Regulated chemical.
RCRA Chemical Code:
none
Alternate Chemical Names
)
This section provides a listing of alternate names for this chemical, including trade names, synonyms, and foreign names.
- CINNAMENE
- CINNAMENOL
- CINNAMOL
- DIAREX HF 77
- ESTIRENO, MONÓMERO DE, INHIBIDO (DOT SPANISH)
- ETHENYL BENZENE
- ETHENYLBENZENE
- NCI-C02200
- PHENETHYLENE
- PHENYLETHENE
- PHENYLETHYLENE
- STYRENE
- STYRENE MONOMER
- STYRENE MONOMER, [INHIBITED]
- STYRENE, MONOMER, INHIBITED
- STYROL
- STYROLE
- STYROLENE
- STYRON
- STYROPOL
- STYROPOL SO
- STYROPOR
- STYRÈNE MONOMÈRE, STABILISÉ (DOT FRENCH)
- UN 2055
- VINYL BENZENE
- VINYLBENZENE
- VINYLBENZOL
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