1. Explosion accident in Tianjin Binhai New Areais a major safety accident occurred in Tianjin Binhai New Area. At 22:51:46 on August 12, 2015, a fire and explosion occurred in the dangerous goods warehouse of Ruihai Company located in Tianjin Port, Binhai New Area, Tianjin. The total explosion energy of the accident was about 450 tons of TNT. 165 people were killed (including 24 active public security fire personnel, 75 Tianjin Port fire personnel, 11 public security police, 55 employees and residents of the accident enterprise and surrounding enterprises), and 8 people were missing (including 5 Tianjin fire personnel, employees of surrounding enterprises and 3 family members of Tianjin Port fire personnel). 798 people were injured (58 seriously injured and 740 lightly injured), 304 buildings, 12,428 commercial vehicles, and 7,533 containers were damaged.
The main killer —— Triethylaluminum
Triethylaluminum (ID: 4-3007 standard number: 42022) has special physical and chemical properties: Triethylaluminum is a colorless liquid, active chemical properties, intense oxidation reaction, spontaneous combustion in the air, water explosion decomposition into aluminum hydroxide and ethane, and acid, halogen, alcohol amine contact violent reaction, has a burn effect on the human body. The thermal stability is poor, and the decomposition temperature is 120 ~ 125℃. Relative density: 0.837(20℃) Freezing point: -52.5℃ Boiling point: 194℃ flash point: < -52.5℃ vapor pressure: 533.32(83℃) Spontaneous combustion point: < -52.5℃ Viscosity: 0.0026Pas (25℃) Fire extinguishing agent: dry sand, dry powder; Water, foam and carbon tetrachloride are prohibited. Precautions in storage and transportation: Special containers filled with inert gas or nitrogen must be used for storage and transportation (the content and water content of nitrogen in the container shall not be greater than 20mL/m3). Keep away from fire and heat. The temperature of the warehouse shall not exceed 30℃, and the relative humidity shall be below 75%. Store in isolation from halogens, alcohols, acids and amines. Do not mix storage and transport with oxidizer. Load lightly during handling. Do not impact or damage the package. It is because of the large dangerous characteristics of Triethylaluminum: chemical reactivity is very high, contact with air will smoke spontaneous combustion, in the case of open fire, high heat strong decomposition and combustion; Can react strongly with oxidant; Strong decomposition in water, the release of flammable alkane gas, sensitive to moisture and trace oxidation reaction, easy to cause explosion. Therefore, in the manufacture of Triethylaluminum, transportation, storage, use, waste and other aspects of the safe use and fire extinguishing on the special requirements.
Article from M&J International Trading Co., Ltd
