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Sulfur 1. Logo Chinese name Sulfur English name sulfur Molecular formula S Relative molecular mass 32.06 CAS No. 7704-34-9 Hazard category Category 4.1 Flammable solid chemical category Non-metallic element 2. Main composition and properties Main ingredients Pure product Appearance and properties Light yellow brittle crystal or powder, special odor. Mainly used in the manufacture of dyes, pesticides, matches, * * , rubber, rayon, medicine, etc. 3. Health hazards: inhalation, ingestion, and percutaneous absorption. Health hazards: Because it can be partially converted into hydrogen sulfide in the intestine and absorbed, oral administration of large amounts can lead to hydrogen sulfide poisoning. The systemic toxic effects of acute hydrogen sulfide poisoning manifest as central nervous system symptoms. There are headache, dizziness, fatigue, vomiting, ataxia, coma, etc. This product can cause conjunctivitis and skin eczema. Mildly irritating to skin. Inhalation of sulfur dust during production for a long period of time generally has no obvious toxic effects. 4. First aid measures: In case of skin contact, take off contaminated clothing and wash the skin thoroughly with soap and water. Eye contact: Lift eyelids and flush with plenty of running water or saline. Seek medical attention. If inhaled, quickly move away from the site to fresh air. Keep your breathing open. If breathing is difficult, give oxygen. If breathing stops, perform artificial respiration immediately. Seek medical attention. If swallowed, drink plenty of warm water, induce vomiting, and seek medical attention. 5. Flammability and explosion characteristics and fire protection Flammable flash point (℃) Meaningless explosion lower limit (%) 35mg/m3 Ignition temperature (℃) 232 Explosion upper limit (%) No data Minimum ignition energy (mJ) 15 Maximum explosion pressure (MPa) 0.415 Hazardous characteristics React violently with halogen, metal powder, etc. in contact with it. Sulfur is a poor conductor and can easily generate static charges during storage and transportation. Can cause sulfur dust to catch fire. Dust or vapors form explosive mixtures when mixed with air or oxidants. Fire extinguishing method: Use sand to extinguish small fires. In case of fire, mist water can be used to extinguish the fire. Never direct water flow into the molten material to avoid causing serious flow fires or violent boiling splashes. Firefighters must wear gas masks and put out fires from a safe distance upwind. 6. Leak emergency response: Isolate the leaked contaminated area and restrict access. Cut off the fire source. It is recommended that emergency responders wear self-priming filter dust masks and general work clothes. Do not come into direct contact with spilled material. small leak: Avoid dust and use a clean shovel to collect in a dry, clean, covered container. Move to a safe place. massive leaks: Use plastic sheeting or canvas to cover the shoes to reduce flying. Use non-sparking tools to collect and recycle or transport to a waste disposal site for disposal. 7. Storage and transportation precautions: Store in a cool, ventilated warehouse. Keep away from fire and heat sources. The packaging must be sealed and protected from moisture. Avoid mixing storage and transportation with oxidants, phosphorus and other items. Frequent inspections are required at ordinary times to check warehouse temperature and mixed storage. When handling, load and unload with care to prevent damage to packaging and containers. 8. Protective Measures Workshop Hygiene Standard China MAC (mg/m3) No standard has been established. Former Soviet Union MAC (mg/m3) 6 American TVL-TWA No standard has been established. American TVL-STEL has no standard detection method. Engineering control closed operation, local exhaust. Respiratory system protection generally does not require special protection. When the dust concentration in the air is high, wear a self-priming filter dust mask. Eye protection generally does not require special protection. For body protection, wear general work protective clothing. For hand protection, wear general work protective gloves. Smoking is strictly prohibited at other work sites. Eat and drink. After work, take a shower * * . Pay attention to personal hygiene. 9. Physical and chemical properties Melting point (℃) 119 Boiling point (℃) 444.6 Relative density (water = 1) 2.0 Relative density (air = 1) No data Saturated vapor pressure (kPa) 0.13 (183.8℃) Logarithmic heat of combustion of octanol/water partition coefficient (kj/mol) No data Critical temperature (℃) 1040 Critical pressure (MPa) 11.75 Solubility: Insoluble in water, slightly soluble in ethanol and ether, and easily soluble in carbon disulfide. 10. Stability and reactivity Stability Stability Polymerization Hazards No polymerization Conditions to avoid contact Contraindications Strong oxidants. Combustion (decomposition) products oxidize sulfur. 11. Toxicological information Acute toxicity LD50 LD50 12. Environmental information No information available. 13. Things you should read before disposal * * and local regulations. Dispose by incineration. Dissolved in flammable solvents or mixed with fuel. 14. Transportation Information Dangerous Regulation No. 41501 UN No. 1350 Packaging Classification III Packaging Mark 8 Packaging Method Plastic bag, multi-layer kraft paper bag with outer full-open steel drum ； Plastic bags, fiberboard drums outside multi-layer kraft paper bags, plywood drums, cardboard drums ； Plastic bag, multi-layer kraft paper outer wooden box ； Wooden crates outside screw-top glass bottles, iron-top pressure-top glass bottles, plastic bottles or metal barrels (cans) ； Plastic textile bag outside plastic bag. The 15th Regulation Regulation on the Safety Management of Information Chemical Dangerous Goods (issued by the State Council on February 17, 1987), the Implementation Rules of the Regulation on the Safety Management of Chemical Dangerous Goods (Hua Lao Fa No. 677), the Regulations on the Safe Use of Chemicals in the Workplace (Ministry of Labor Fa No. 423) and other regulations have made corresponding provisions on the safe use, production, storage, transportation, loading and unloading of chemical dangerous goods. ； The Classification and Labeling of Commonly Used Hazardous Chemicals (GB13690-92) classifies this substance as Class 4.1 flammable solid.