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Molecular formula C8H8O2； C6H5COOCH3 Appearance and properties: Colorless liquid. Molecular weight: 136.15. Vapor pressure: 0.13/39°C. Flash point: 82°C. Melting point: -12.3°C. Boiling point: 198°C. Solubility: Insoluble in water; miscible with methanol, ethanol, and ether. Density: Relative density (water=1): 1.09 ； Relative density (air=1): 4.68. Stability: Stable. Hazard symbol: 15 (hazardous substance). Main uses: Used in the fragrance industry and as a solvent. This substance may be harmful to the environment. I. Health hazards: Routes of exposure: inhalation, ingestion, dermal absorption. Health hazards: Inhalation, ingestion, or dermal absorption is harmful to the body. Steam or fog is irritating to the eyes and upper respiratory tract. It is irritating to the skin. It has an allergenic effect on the respiratory tract and skin. II. Toxicological data and environmental behavior: Toxicity: It belongs to the low-toxicity category. Acute toxicity: LD50 3430 mg/kg (oral, rats). Hazardous characteristics: It poses a risk of combustion when exposed to open flames, high temperatures, or oxidizing agents. Combustion (decomposition) products: carbon monoxide, carbon dioxide. Environmental standards: Former Soviet Union (1975) – Maximum allowable concentration of harmful substances in water: 0.001 mg/L. Former Soviet Union (1975) – Maximum allowable concentration of harmful substances in wastewater: 0.1 mg/L. Emergency response measures: I. Emergency response to leaks: Quickly evacuate people from the area affected by the leak to a safe location, and isolate the area while strictly restricting access. Cut off the source of fire. It is recommended that emergency responders wear self-contained positive-pressure breathing apparatus and protective suits. Seal off the source of leakage as much as possible to prevent it from entering confined spaces such as sewers and drainage ditches. Minor leaks: Absorb or soak up with sand or other non-flammable materials. It can also be brushed with an emulsion made from non-flammable dispersants; the cleaning solution, after being diluted, is then discharged into the wastewater system. Large-scale leakage: Build dikes or dig pits to contain it. Cover with foam to reduce vapor damage. Transfer to a tank truck or specialized collector using a pump, and recycle it or transport it to a waste disposal facility for disposal. II. Protective Measures: Respiratory protection: When the concentration in the air exceeds the permissible level, wear a self-priming filter-type gas mask (half-mask). Eye protection: Wear chemical safety goggles. Body protection: Wear breathable gas-resistant clothing. Hand protection: Wear chemical-resistant gloves. Others: Smoking, eating, and drinking are prohibited at the work site. After use, clean thoroughly. Work uniforms must not be taken to areas other than the work site. Store clothes contaminated with toxins separately. Rinse and set aside for later use. III. First aid measures: Skin contact: Remove the contaminated clothing and thoroughly wash the skin with plenty of flowing water. Seek medical attention. Eye contact: Lift the eyelids and rinse with plenty of flowing water or saline. Seek medical attention. Inhalation: Quickly move to a place with fresh air. Keep the airways clear. If there is difficulty breathing, administer oxygen. If breathing stops, perform artificial respiration immediately. Seek medical attention. Ingestion: Drink plenty of warm water, induce vomiting, and seek medical attention. Fire extinguishing methods: fog water, dry powder, sand, foam, carbon dioxide.