Styrene oxide Safety Data Sheets

Acute toxicity - Category 4, Dermal

Eye irritation, Category 2

Carcinogenicity, Category 1B

If inhaled

Following skin contact

Following eye contact

Following ingestion

SYMPTOMS: Symptoms of exposure to this compound may include severe irritation of the skin and eyes, and skin sensitization. It can cause corrosion of tissues. Other symptoms may include burns, irritation of mucous membranes and upper respiratory tract, nausea, vomiting and headaches. Exposure may also cause central nervous system depression, hepatic lesions and pain to the eyes. Symptoms of exposure to a related compound include drying and cracking of the skin on contact, primary irritation to mucosal surfaces, fatigue, weakness, depression, unsteadiness, feeling of drunkenness, abnormal electroencephalograms and one case of toxic retrobulbar neuritis. Chronic exposure to a related compound has caused peripheral neuropathies (distal hypesthesia and decreased nerve conduction velocities). ACUTE/CHRONIC HAZARDS: This compound is corrosive and can cause burns. It may be toxic by ingestion, inhalation or skin absorption. It is absorbed slowly through the skin. It is an irritant and, when heated to decomposition, it emits acrid fumes and toxic fumes of carbon monoxide and carbon dioxide. (NTP, 1992)

This chemical is combustible. (NTP, 1992)

Use powder, foam, carbon dioxide. In case of fire: keep drums, etc., cool by spraying with water. NO direct contact with water.

Personal protection: chemical protection suit including self-contained breathing apparatus. Collect leaking liquid in covered containers. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations.

Personal protection: chemical protection suit including self-contained breathing apparatus. Collect leaking liquid in covered containers. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations.

PRECAUTIONS FOR "CARCINOGENS": A high-efficiency particulate arrestor (HEPA) or charcoal filters can be used to minimize amt of carcinogen in exhausted air ventilated safety cabinets, lab hoods, glove boxes or animal rooms ... Filter housing that is designed so that used filters can be transferred into plastic bag without contaminating maintenance staff is avail commercially. Filters should be placed in plastic bags immediately after removal ... The plastic bag should be sealed immediately ... The sealed bag should be labelled properly ... Waste liquids ... should be placed or collected in proper containers for disposal. The lid should be secured & the bottles properly labelled. Once filled, bottles should be placed in plastic bag, so that outer surface ... is not contaminated ... The plastic bag should also be sealed & labelled. ... Broken glassware ... should be decontaminated by solvent extraction, by chemical destruction, or in specially designed incinerators. Chemical Carcinogens

NO open flames. NO contact with acids or bases. Above 76°C use a closed system and ventilation. Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.

Separated from acids, bases and food and feedstuffs. Ventilation along the floor.... PRECAUTIONS SHOULD BE TAKEN TO PREVENT EXCESSIVE PRESSURE UNDER STORAGE OR REACTION CONDITIONS & TO RELIEVE SUCH PRESSURE SHOULD IT OCCUR.

Occupational Exposure limit values

Biological limit values

Eye/face protection

Skin protection

Respiratory protection

Thermal hazards

The substance may polymerize due to heating above the flash point, under the influence of acids and bases.

no data available

On ... basis /of flash point/, it presents hazard of flammability similar to that encountered with ... o-cresol, o-dichlorobenzene, naphthalene, phenol, and dimethylaniline. Definite hazard exists whenever ... /it/ is heated to temperatures at and above the flash point.STYRENE OXIDE is incompatible with oxidizing agents. Also incompatible with acids and bases. Reacts with 4-(4'-nitrobenzyl)pyridine. Polymerizes exothermally and reacts vigorously with compounds possessing a labile hydrogen (e.g. alcohols and amines) in the presence of catalysts such as acids, bases and certain salts (NTP, 1992).

no data available

Reacts vigorously with cmpd having labile hydrogen, incl water, in presence of catalysts such as acids, bases, & certain salts

no data available

Acute toxicity

• Oral: LD50 - rat - ca. 4 290 mg/kg bw.
• Inhalation: LC50 - rat (male) - > 500 ppm.
• Dermal: LD50 - rabbit (male) - 1 060 mg/kg bw.

Skin corrosion/irritation

Serious eye damage/irritation

Respiratory or skin sensitization

Germ cell mutagenicity

Carcinogenicity

Reproductive toxicity

STOT-single exposure

STOT-repeated exposure

Aspiration hazard

• Toxicity to fish: LC50 - Cyprinus carpio - 6.9 mg/L - 96 h.
• Toxicity to daphnia and other aquatic invertebrates: EC50 - Daphnia magna - 13 mg/L - 48 h.
• Toxicity to algae: EC50 - Desmodesmus subspicatus (previous name: Scenedesmus subspicatus) - ca. 32 mg/L - 96 h.
• Toxicity to microorganisms: no data available

AEROBIC: Styrene-7,8-oxide, present at 100 mg/L, reached 80-82% of its theoretical BOD in 2 weeks using an activated sludge inoculum at 30 mg/L and the Japanese MITI test(1); however, the test results might be for the hydrolysis product, styrene glycol(SRC).

An estimated BCF of 3.5 was calculated in fish for styrene-7,8-oxide(SRC), using a log Kow of 1.61(1) and a regression-derived equation(2). According to a classification scheme(3), this BCF suggests the potential for bioconcentration in aquatic organisms is low(SRC). Hydrolytic half-lives of 0.17, 28 and 40.9 hours have been reported for styrene-7,8-oxide at pH 3, 7, and 9, respectively(4). Hydrolysis is likely to be a more important fate than bioconcentration in aquatic organisms, particularly in acidic waters(SRC).

The Koc of styrene-7,8-oxide is estimated as 53(SRC), using a water solubility of 3,000 mg/L(1) and a regression-derived equation(2). According to a classification scheme(3), this estimated Koc value suggests that styrene-7,8-oxide is expected to have very high mobility in soil. Hydrolytic half-lives of 0.17, 28 and 40.9 hours have been reported for styrene-7,8-oxide at pH 3, 7, and 9, respectively(4). Hydrolysis is likely to be a more important fate than transport through soils, particularly in acidic soils(SRC).

no data available

Product

Contaminated packaging

no data available

no data available

Information on revision

Abbreviations and acronyms

• CAS: Chemical Abstracts Service
• ADR: European Agreement concerning the International Carriage of Dangerous Goods by Road
• RID: Regulation concerning the International Carriage of Dangerous Goods by Rail
• IMDG: International Maritime Dangerous Goods
• IATA: International Air Transportation Association
• TWA: Time Weighted Average
• STEL: Short term exposure limit
• LC50: Lethal Concentration 50%
• LD50: Lethal Dose 50%
• EC50: Effective Concentration 50%

References

• IPCS - The International Chemical Safety Cards (ICSC), website: http://www.ilo.org/dyn/icsc/showcard.home
• HSDB - Hazardous Substances Data Bank, website: https://toxnet.nlm.nih.gov/newtoxnet/hsdb.htm
• IARC - International Agency for Research on Cancer, website: http://www.iarc.fr/
• eChemPortal - The Global Portal to Information on Chemical Substances by OECD, website: http://www.echemportal.org/echemportal/index?pageID=0&request_locale=en
• CAMEO Chemicals, website: http://cameochemicals.noaa.gov/search/simple
• ChemIDplus, website: http://chem.sis.nlm.nih.gov/chemidplus/chemidlite.jsp
• ERG - Emergency Response Guidebook by U.S. Department of Transportation, website: http://www.phmsa.dot.gov/hazmat/library/erg
• Germany GESTIS-database on hazard substance, website: http://www.dguv.de/ifa/gestis/gestis-stoffdatenbank/index-2.jsp
• ECHA - European Chemicals Agency, website: https://echa.europa.eu/

Other Information

Do NOT take working clothes home.