Tetrahydrofuran

Chinese name: tetrahydrofuran; oxygen E Ring

English name: Tetrahydrofuran; THF

CAS No. :109-99-9

RTECS: LU5950000

Molecular Formula: C₄H₈O

Physical and chemical properties: Colorless transparent liquid. Are ether-like odor.

Relative density: 0.89.

Molecular weight: 72.11.

Melting point: -108.5 oC.

Boiling point: 66 oC.

Flash point: -17.2 oC.

Self-ignition point: 321.1 oC.

Refractive index: 1.407.

Critical Temperature: 268 oC.

Critical pressure: 5.19 × 10 ^ 6Pa.

Vapor Pressure: 15.2kPa (15 oC). Vapor density of 2.5. Soluble in water, ethanol, ethyl ether, aliphatic hydrocarbons, aromatic hydrocarbons, chlorinated hydrocarbons, acetone, benzene and other organic solvents.

Hazard: Steam can form an explosive mixture with air, the event of fire, heat can easily cause a fire explosion. A strong reaction with the oxidant can occur. Contact with air or light conditions, can generate potentially dangerous explosive peroxides. In addition, because of its vapor is heavier than air, they are able to spread very far in a fire source will be a return to burning. In case of high fever, increased pressure within containers, cracking and the risk of explosion. Combustion decomposition products: carbon monoxide, carbon dioxide.

Fire-fighting measures: Use dry powder, foam, carbon dioxide, sand fire. Cooling water to keep fire in the container.

Storage Information

Packaging flag: flammable liquids.

Packing method: (II) kind. Glass bottles outside the wooden box lined with non-combustible material or metal pail. Storage condition: stored in a cool, ventilated storage room. Keep away from heat, fire, avoid direct sunlight, and oxidants, acid isolation storage and transportation.
Leak treatment: First, cut off the source of fire, wear gas masks and gloves. Absorbed with sand, down to the open areas buried. Ground pollution scrub with soap or detergent. Diluted sewage into the wastewater system.
Accessibility: used as a solvent, chemical synthesis of intermediates, analytical reagent.
Invasive routes: respiratory, digestive, skin.

109-99-9