Tetrahydrofuran is a type of heterocyclic organic compound. It is one of the most polar ethers and is used as a moderately polar solvent in chemical reactions and extractions. Tetrahydrofuran is a colorless, low-viscosity liquid used as a moderately polar aprotic solvent in chemical reactions and extractions. It is an important organic chemical and fine chemical raw material.
Application of tetrahydrofuran and emergency measures
THF is an important raw material for organic synthesis and a solvent with excellent performance. It is especially suitable for dissolving PVC, polyvinylidene chloride and butylaniline. It is widely used as surface coatings, anti-corrosion coatings, printing inks, tapes and film coatings. Solvent and used as reaction solvent. When used in electroplating aluminum liquid, the thickness and brightness of the aluminum layer can be controlled arbitrarily. THF itself can be polycondensed (repolymerized by ring-opening initiated by cations) to form polytetramethylene ether glycol (PTMEG), also known as tetrahydrofuran homopolyether.
Applications and emergency measures of tetrahydrofuran and health hazards
After inhalation of high concentrations, symptoms such as dizziness, headache, chest tightness, chest pain, cough, fatigue, stomach pain, dry mouth, nausea, and vomiting may occur, and may be accompanied by eye irritation symptoms. Liver dysfunction may occur in some patients.
Applications and emergency measures of tetrahydrofuran
Small leakage: Use sand or other non-combustible materials to absorb or absorb. You can also rinse with large amounts of water, dilute the wash water and put it into the wastewater system.
Substantial leakage: build dikes or dig pits to contain them. Cover with foam to reduce vapor hazards. The spray of water cools and dilutes the steam. Protect on-site personnel and dilute leakage into non-combustible materials. Use an explosion-proof pump to transfer it to a tanker or a special collector. Recycle or transport it to a waste treatment site for disposal.
Fire extinguishing media: foam, dry powder, carbon dioxide, sand, water is ineffective in extinguishing fires.
Fire-fighting methods: Spray water to cool the container, and if possible, move the container from the fire scene to an open area. Containers in a fire scene must be evacuated immediately if they change color or if there is sound from the safety pressure relief device.
Precautions for the application and emergency measures of tetrahydrofuran
1. Store in a cool, ventilated warehouse. Keep away from fire sources, the storage temperature should not exceed 30°C, and keep the container sealed.
2. They should be stored separately from oxidants and avoid mixed storage.
3. Use explosion-proof lighting and ventilation facilities.
4. Tetrahydrofuran is prohibited from using mechanical equipment and tools that are prone to sparking trifluoromethoxypyridine.
5. During transportation, it should be protected from exposure to the sun, rain, high temperature, etc.
