Clear pale straw-colored liquid.
Polymerization monomer for special synthetic rubbers, drying oils, ion-exchange resins, casting resins, polyesters.
Registry Numbers and Inventories.
Japan ENCS (MITI)
Melting point, °C
Boiling point, °C
Vapor pressure, mmHg
Vapor density (air=1)
Odor Threshold Odor threshold 10-60 ppm.
0.918 g/cm3 (20 C)
Solubility in water
Partition coefficient, pKow
Hazards and Protection.
Store at below 90 degrees F with inhibitor.
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Wear appropriate protective gloves, clothing and goggles.
Wear positive pressure self-contained breathing apparatus (SCBA).
If you spill this chemical, FIRST REMOVE ALL SOURCES OF IGNITION. Then, use absorbent paper to pick up all liquid spill material. Your contaminated clothing and absorbent paper should be sealed in a vapor-tight plastic bag for eventual disposal. Solvent wash all contaminated surfaces with 60-70% ethanol followed by washing with a soap and water solution. Do not reenter the contaminated area until the Safety Officer (or other responsible person) has verified that the area has been properly cleaned.
Reactive at high temperature and pressure. If polymerizes in container, may burst.
May react vigorously with strong oxidizing agents Can react exothermically with reducing agents (such as alkali metals and hydrides) to release gaseous hydrogen May react exothermically with both acids and bases.
Oxides of carbon.
Upper exp. limit, %
Lower exp. limit, %
Fires involving this material can be controlled with a dry chemical, carbon dioxide or Halon extinguisher.
This chemical is combustible.
Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers.
Fire may produce irritating, corrosive and/or toxic gases.
TLV: 10 ppm; 53 mg/m3 (ACGIH 1996). NIOSH REL: TWA 10 ppm (50 mg/m3)
Central nervous system depression occurs in serious exposures.
Styrene sickness with nausea, vomiting, and a sensation of drunkenness occurs with inhalation exposure.
Irritation of the respiratory tract and occupational asthma may occur. Pulmonary edema has been reported in animals.
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.
IMMEDIATELY leave the contaminated area; take deep breaths of fresh air. If symptoms (such as wheezing, coughing, shortness of breath, or burning in the mouth, throat, or chest) develop, call a physician and be prepared to transport the victim to a hospital. Provide proper respiratory protection to rescuers entering an unknown atmosphere. Whenever possible, Self-Contained Breathing Apparatus (SCBA) should be used.
IMMEDIATELY flood affected skin with water while removing and isolating all contaminated clothing. Gently wash all affected skin areas thoroughly with soap and water. If symptoms such as redness or irritation develop, IMMEDIATELY call a physician and be prepared to transport the victim to a hospital for treatment.
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.