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[Chemical Knowledge]：Specification for storage and transportation of tetrahydrofuran

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Tetrahydrofuran in the field of chemical production of raw materials in the safety of storage and transport specifications

1. Introduction

Tetrahydrofuran is an important organic chemical raw materials, widely used in medicine, pesticides, plastics, rubber and other fields. However, tetrahydrofuran has certain toxicity and flammability, so it is necessary to strictly abide by relevant regulations during storage and transportation to ensure safety. This article will detail the safe storage and transportation specifications of tetrahydrofuran.

2. the physicochemical properties of tetrahydrofuran

tetrahydrofuran is a colorless transparent liquid with ether-like odor. Relative density 0.8892(20/4°C). Melting point -108.5 ℃. Boiling point 66 ℃. Refractive index 1.4071. Flash point (open cup)-14 ℃. Viscosity 0.55mPa · s. Vapor pressure 19.33kPa(21.2°C). Self-ignition point 321 ℃. Explosion limit 1.85~11.65%(volume). Slightly soluble in water, soluble in ethanol, ether, acetone, benzene and other organic solvents. It forms an azeotropic mixture with water, and the azeotropic point contains 2.5 percent water. Has a very low vapor pressure, highly flammable, to avoid contact with oxidants, to avoid contact with water and air.

3. tetrahydrofuran safety storage specification

1. The storage place should choose a cool, ventilated and dry place, avoid direct sunlight and high temperature.
2. The storage container shall be a special container with good sealing performance to avoid leakage of tetrahydrofuran.
3. The storage site shall be equipped with corresponding fire-fighting equipment and leakage emergency treatment equipment.
4. During the storage process, the safety of containers and storage places should be checked regularly, and hidden dangers such as leakage should be found and dealt with in time.
Safety transportation specifications for
4. tetrahydrofuran

1. Before transportation, check the safety performance of the transportation vehicle to ensure that the vehicle meets relevant requirements.
2. Keep running smoothly during transportation to avoid severe vibration and collision.
3. Transportation vehicles shall be equipped with corresponding fire fighting equipment and leakage emergency treatment equipment.
4. Relevant road traffic safety regulations shall be observed during transportation to ensure transportation safety.

5. Tetrahydrofuran Leakage Emergency Treatment Specification

1. When tetrahydrofuran leakage is found, the operation should be stopped immediately and the leakage source should be closed.
2. Mix with sand, dry lime or soda ash and recycle to the waste treatment site for disposal.
3. Build a dam or dig a pit to accommodate a large amount of leakage; cover with foam to reduce steam disasters. Transfer to tank truck or special collector with explosion-proof pump, recycle or transport to waste treatment site for disposal.
4. Respiratory system protection: When the concentration in the air exceeds the standard, wear a filtering gas mask (half mask). In case of emergency rescue or evacuation, it is recommended to wear oxygen respirator or air respirator.
5. Eye protection: wear chemical safety glasses.
6. Body protection: wear anti-static overalls.
7. Hand protection: wear anti-benzene and oil-resistant gloves.
8. Others: Smoking is strictly prohibited at the work site. After work, shower and change clothes. Pay attention to personal hygiene. Pre-employment and regular medical examinations are carried out.

6. conclusion

tetrahydrofuran as an important chemical raw material, in the process of storage and transportation need to strictly abide by the relevant norms to ensure safety. By understanding the physical and chemical properties of tetrahydrofuran, mastering its safety storage and transportation specifications, and leakage emergency treatment specifications, it can effectively ensure production safety and promote the stable development of the chemical industry.

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