In addition to the impurities generated in the synthesis process, sulfur hexafluoride gas may also be mixed with a small amount of air, water, mineral oil and other impurities during the gas filling process. These impurities carry or produce certain toxic substances. Therefore, in order to ensure the purity and quality, a quality standard has been established for the outgoing sulfur hexafluoride, and the manufacturer is required to provide the non-toxic certificate of biological test when supplying.

1. Some toxic products produced when SF6 gas in electrical equipment acts on high-temperature arc.

For example, the decomposition of SF6 gas in the arc and its reaction with oxygen will generate sulfuryl fluoride, sulfuryl tetrafluoride, sulfuryl fluoride and other toxic substances.

2. The decomposition product of sulfur hexafluoride gas in electrical equipment reacts with the water in it to produce some toxic products. For example, the secondary reaction between SF6 gas decomposition products and water generates hydrofluoric acid, sulfur dioxide, sulfuric acid, etc

3. SF6 gas and decomposition products in electrical equipment react with electrodes (Cu-W alloy) and metal materials (AL, Cu) to generate some toxic products. For example, sulfur hexafluoride gas and decomposition products react with electrodes or other materials: ALF3 (solid powder), ALF3 (solid powder), CuF2 (solid powder) and other solid powders

4. SF6 gas and decomposition products in electrical equipment react with insulating materials to generate some toxic products. For example, insulating parts such as epoxy phenolic glass fiber cloth board (rod, tube) containing silicon; Or epoxy resin casting parts, molded parts, porcelain bottles, silicone rubber, silicone grease, etc. filled with quartz sand and glass play a chemical role to generate SiF4, Si (CH3) 2F2 and other products.

The above products of high-temperature decomposition of sulfur hexafluoride gas at dawn will lead to the problem of impurity of sulfur hexafluoride gas. When we purchase, we should first avoid it. We should find a regular manufacturer to purchase and attach a product test report.

The content of the article comes from sulfur hexafluoride gas: http://www.feiliergas.com