[Chemical Knowledge]：Specification for storage and transport of dimethyl succinate

Dimethyl succinate (Dimethyl Succinate, referred to as DMS) is a common chemical raw material, widely used in plastics, fiber, medicine, pesticides and other fields. Because of its flammable, toxic, corrosive and other characteristics, it is necessary to strictly comply with relevant regulations during storage and transportation to ensure safety. This article will detail the safe storage and transportation specifications for dimethyl succinate.

1. the physical and chemical properties of dimethyl succinate

dimethyl succinate is a colorless transparent liquid with pungent odor. The molecular formula is C6H10O4 and the molecular weight is 146.14. The melting point is -4 ℃, the boiling point is 195~196 ℃, and the flash point is 82 ℃. Insoluble in water, miscible in ethanol, ether and other organic solvents. Dimethyl succinate contact with oxidant can cause combustion, fire, high heat can cause combustion explosion. Its steam is heavier than air, can spread to a considerable distance at a lower place, and will catch fire and ignite in case of fire source. In case of high heat, the internal pressure of the container increases, and there is a risk of cracking and explosion.

2. the toxicity of dimethyl succinate

dimethyl succinate irritation to the eyes, skin, mucous membranes, and upper respiratory tract. Inhalation of high concentrations of dimethyl succinate can cause laryngeal edema, bronchitis, chemical pneumonia, pulmonary edema, etc. Misuse can cause digestive tract burns, nausea, vomiting, abdominal pain, diarrhea and so on. Long-term exposure can cause neurasthenia syndrome, hepatomegaly, abnormal menstruation in women, etc. It has a sensitizing effect on the skin. After sensitization, even if it is exposed to very low concentrations of this product, it can cause skin itching and rash.

3. dimethyl succinate safety storage specification

1. storage place should be cool, ventilated, away from fire, heat source. The warehouse temperature should not exceed 30 ℃. Keep the 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.
2. Handle and unload 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 and should be treated as hazardous waste.

4. of dimethyl succinate safety transport specification

1. Before transport should first check the packaging container is complete, sealed, transport process to ensure that the container does not leak, do not collapse, do not fall, do not damage. It is strictly prohibited to mix with oxidants, edible chemicals, etc. During transportation, it shall be protected from sun exposure, rain and high temperature.
2. The transport vehicles shall be equipped with corresponding varieties and quantities of fire-fighting equipment and leakage emergency treatment equipment. The exhaust pipe of the vehicle for shipment of this product must be equipped with a fire retardant device. During transportation, it should be parked in a cool and ventilated place, away from fire and heat source. The vehicles shall be thoroughly cleaned after transportation.

5. Dimethyl succinate Leakage Emergency Treatment

1. Quickly evacuate the personnel from the contaminated area to the safety zone, 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 anti-static overalls. Cut off the leak source as much as possible. Prevent from flowing into restricted spaces such as sewers and flood drainage ditches.
2. Small amount of leakage: adsorption or absorption with sand or other non-combustible materials. Can also be washed with a lot of water, wash water diluted into the waste water system. Large leakage: build embankments or dig pits to contain. 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.

In short, dimethyl succinate, as a common raw material for chemical production, needs to strictly abide by relevant specifications during storage and transportation to ensure safety. By understanding its physical and chemical properties, toxicity, and safe storage and transportation specifications, accidents can be effectively prevented and the safety of personnel and the environment can be ensured.