[Chemical Knowledge]：Specification for storage and transport of diphenyl ethers

Safety of Diphenyl Ether Storage and Transportation Specification

Introduction

Diphenyl ether is a common chemical production raw material, widely used in medicine, pesticides, dyes and other fields. However, due to its flammable, toxic and other characteristics, the safety requirements for storage and transportation are high. In order to ensure the safety of diphenyl ether in the process of production, use and storage, it is very important to formulate a set of scientific and reasonable safety specifications.

1. the physical and chemical properties of diphenyl ether

diphenyl ether is a colorless transparent liquid with a special smell. Relative density 1.078, melting point -12 ℃, boiling point 258 ℃, refractive index 1.5475, flash point 105 ℃. Insoluble in water, soluble in alcohol, ether and other organic solvents.

2. the harm of diphenyl ether

diphenyl ether has certain harm to human body, mainly for the irritation of eyes and skin, long-term exposure may lead to skin allergy. In addition, diphenyl ether is also flammable, encounter flame, high heat or oxidant contact, there is a risk of combustion and explosion.

3. diphenyl ether storage specification

1. storage place should be cool, ventilated, away from fire, heat source. The warehouse temperature should not exceed 30 ℃.
2. Storage containers must be sealed to prevent leakage. It should be stored separately from oxidants, acids and alkalis, and mixed storage is not allowed.
3. The storage area shall be equipped with leakage emergency treatment equipment and suitable containment materials.

4. diphenyl ether transport specification

1. before transport should check whether the packaging container is complete, sealed, transport process to ensure that the container does not leak, not collapse, not fall, not damaged.
2. It is strictly prohibited to mix with oxidants, acids, alkalis, edible chemicals, etc.
3. During transportation, it shall be protected from sun exposure, rain and high temperature. Stay away from kindling and heat sources during stopover.
4. The vehicle shall be thoroughly cleaned after transportation.

5. safety operation precautions

1. Closed operation, strengthen ventilation. Operators must be specially trained and strictly abide by the operating procedures. It is recommended that the operator wear self-priming filtering gas mask (half mask), chemical safety goggles, anti-poison penetration overalls and rubber oil-resistant gloves. Keep away from fire and heat sources. Smoking is strictly prohibited in the workplace. Use explosion-proof ventilation systems and equipment. Prevent vapor leakage into the workplace air. Avoid contact with oxidizing agents. Handle lightly to prevent damage to packaging and containers. Equipped with corresponding types and quantities of fire fighting equipment and leakage emergency treatment equipment. Empty containers may leave harmful substances.
2. Store in a cool, ventilated warehouse. Keep away from fire and heat source. The temperature of the warehouse should not exceed 37 ℃. Keep container sealed. Should be stored separately from the oxidant, do not mix storage. Explosion-proof lighting and ventilation facilities shall be adopted. It is forbidden to use mechanical equipment and tools that are easy to produce sparks. The storage area should be equipped with leakage emergency treatment equipment and suitable containment materials.

6. first aid measures

skin contact: remove contaminated clothing and rinse with running water.
Eye contact: Lift the eyelids and flush with flowing water or saline. Seek medical attention.
inhalation: quickly leave the scene to fresh air. Keep the airway unobstructed. If breathing is difficult, give oxygen. If breathing stops, give artificial respiration immediately. Seek medical attention.
intake: drink plenty of warm water, induce vomiting. Seek medical attention.

7. fire protection measures

dangerous characteristics: in case of open fire, high heat flammable. It can react with oxidizing agents. It is decomposed by high heat to release toxic gases. In case of high heat, the internal pressure of the container increases, and there is a risk of cracking and explosion. Hazardous combustion products: carbon monoxide, carbon dioxide. Fire extinguishing method: firefighters must wear gas masks and full-body fire fighting clothing to put out the fire in the upper wind direction. Move the container from the fire to the open as much as possible. Spray water to keep the fire container cool until the end of the fire. Containers in a fire scene that have discolored or produced sound from the safety pressure relief device must be evacuated immediately. Extinguishing agent: atomized water, foam, dry powder, carbon dioxide, sand. It is not suitable to use water.

8. leakage emergency treatment

emergency treatment: quickly evacuate the personnel from the leakage pollution area to the safety area, isolate them and strictly restrict access. Cut off the fire source. It is recommended that emergency personnel wear self-contained positive pressure breathing apparatus and protective clothing. Cut off the leak source as much as possible. Prevent from flowing into restricted spaces such as sewers and flood drainage ditches. Small amount of leakage: adsorption or absorption with sand or other non-combustible materials. It can also be scrubbed with an emulsion made of a non-flammable dispersant, and the washing liquid is diluted and put into the waste water system. Large leakage: build embankments or dig pits to contain. Transfer to tank truck or special collector by pump, recycle or transport to waste disposal site.