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Title: Comprehensive Material Safety Data Sheet (MSDS) for Styrene

Introduction: Styrene, also known as vinyl benzene, is a colorless, flammable liquid with a sweet odor. It is widely used in the production of polyStyrene foam, plastic containers, and rubber products. This article provides a detailed Material Safety Data Sheet (MSDS) for styrene, covering its properties, health and environmental effects, handling and storage, and emergency procedures.

Section 1: Identification Product identifier: Styrene CAS No.: 100-42-5 Molecular formula: C8H8 Molecular weight: 104.15 Appearance: Colorless, flammable liquid Odor: Sweet

Section 2: Composition/Information on Ingredients Styrene is a pure substance and is not a mixture.

Section 3: Hazards Identification Irritation: Can cause Irritation to the skin, eyes, and respiratory system. Toxicity: May be harmful if inhaled, ingested, or absorbed through the skin. Flammability: Highly flammable liquid and vapor. Explosive: May form explosive mixtures with air.

Section 4: First Aid Measures Inhalation: Remove the person to fresh air and keep at rest. Seek medical attention if symptoms persist. Ingestion: Rinse mouth with water and seek medical attention immediately. Skin contact: Remove contaminated clothing and wash the skin with soap and water. Seek medical attention if irritation persists. Eye contact: Rinse eyes with plenty of water for several minutes, holding eyelids open. Seek medical attention if irritation persists.

Section 5: Firefighting Measures Extinguishing media: Use foam, carbon dioxide, dry chemical, or water spray. Special hazards: Risk of fire and explosion when exposed to heat, sparks, or flames.

Section 6: Accidental Release Measures Personal precautions: Use appropriate personal protective equipment. Environmental precautions: Prevent spills from reaching surface waters. Cleanup methods: Absorb or contain the material with suitable absorbent material. Dispose of in accordance with local regulations.

Section 7: Handling and Storage Handling: Avoid contact with skin, eyes, and clothing. Use with adequate ventilation. Storage: Store in a cool, dry place away from heat, sparks, and open flames. Keep container tightly closed.

Section 8: Exposure Controls/Personal Protection Engineering controls: Use local exhaust ventilation or general ventilation to maintain air concentrations below the exposure limits. Personal protective equipment: Wear appropriate gloves, safety goggles, and respiratory protection.

Section 9: Physical and Chemical Properties Boiling point: 145.2°C Melting point: -33.3°C Vapor pressure: 2.5 kPa at 20°C Vapor density: 2.55 (air = 1) Solubility in water: Insoluble Specific gravity: 0.88

Section 10: Stability and Reactivity Stable under normal temperatures and pressures. Incompatible with strong oxidizing agents, strong bases, and water.

Section 11: Toxicological Information Acute toxicity: LD50 (oral, rat): 3.6 g/kg Chronic toxicity: May cause irritation to the respiratory system, skin, and eyes.

Section 12: Ecological Information Not classified as hazardous to the environment.

Section 13: Disposal Considerations Dispose of in accordance with local regulations and guidelines for chemical waste.

Section 14: Transport Information Transport as a dangerous good in accordance with the relevant regulations and guidelines.

Section 15: Regulatory Information Consult the relevant regulations and guidelines for the classification and labeling of hazardous substances.

Section 16: Other Information This MSDS is prepared in accordance with the requirements of the Occupational Safety and Health Administration (OSHA) and the European Union's Regulation (EC) No. 1272/2008 on classification, labeling, and packaging of substances and mixtures (CLP).