Molecular formula / structural formula:
The by-product carbon five fraction obtained by petroleum cracking to ethylene is obtained by de-lighting and de-refining.
This product is a colorless or slightly yellow volatile flammable and explosive liquid. Specific gravity: 0.6830; melting point: cis-141 ° C, trans-87 ° C; boiling point: cis 44.70 ° C, trans 42.03 ° C; flash point: -29 ° C.
Content, %(m/m) ≥
Dicyclopentadiene + cyclopentadiene, % (m / m) ≤
Cyclopentene, cyclopentane, etc., % (m/m)
The main purpose:
Piperylene is mainly used in the production of petroleum resins, copolymeric elastomers, as well as curing agents, pesticides, perfumes and the like.
Store at low temperatures, avoid direct sunlight, keep away from heat, prohibit open flames, and maintain good ventilation. It should be stored separately from oxidants, halogens (fluorine, chlorine, bromine), acids, etc. The lighting and ventilation facilities in the warehouse should be explosion-proof and the switch should be located outside the warehouse.
Mode of transport:
Transported in accordance with Class I dangerous goods transport. Transport by tank truck.
1. The pentylene diene is flammable and explosive, and the explosion limit in the atmosphere is 2.6-10.3% (v/v), the flash flash point is -28 °C, and the fire hazard classification of stored articles is Class A flammable (GBJ16 Fire Code for Building Design), the hazard category is Category 3.1 (GB6944). Therefore, all precautions should consider how to avoid the formation of an explosive atmosphere and avoid contact with oxidants such as nitric acid, sulfuric acid and chlorosulfonic acid. 2. When the initial fire of m-pentadiene occurs, use foam, dry powder, carbon dioxide fire extinguisher to extinguish the fire, or use sand to extinguish the fire. Do not use water as fire extinguishing agent. 3. The boiling point of piperylene is low and should be stored in a cool dry place. When stacking outdoors in the summer, take measures such as watering and cooling, and avoid transportation at high temperatures at noon. 4. In the transportation of the product of the piperylene, the transport vehicle must be marked with dangerous goods and take necessary safety measures. 5. The piperylene vapor is low in toxicity and will cause discomfort when inhaled a certain amount of steam. Therefore, keep the workplace well ventilated and equipped with a flushing faucet. If there is obvious discomfort, you should leave the scene, breathe fresh air, and give oxygen when breathing is difficult. Once breathing stops, begin CPR immediately. If you experience discomfort or serious discomfort for a long time, you should go to a medical institution for medical treatment.