Which is better for sulfur hexafluoride?

Among the sulfur hexafluoride producers, Tianjin Hanwen Compressed Gas Co., Ltd., Shandong Huixin Chemical Co., Ltd., Hunan Aierxi Technology Development Co., Ltd., Beijing Tiandi Shouhe Technology Development Co., Ltd. and Shaanxi Senyuan Intelligent Technology Co., Ltd. are better.

1, Tianjin Hanwen Compressed Gas Co., Ltd. is an enterprise registered with the approval of relevant state departments and located in Tianjin. The company's main business: production and sales of high-purity hydrogen, high-purity argon, high-purity oxygen, electronic-grade hydrogen chloride, chemical-grade hydrogen chloride, sulfur hexafluoride, nitrogen, argon, carbon dioxide, hydrogen, helium and other mixed gases and various liquid gases.

2. Shandong Huixin Chemical Co., Ltd. mainly produces mixed gases and special gases such as hydrogen chloride, hydrogen sulfide, electronic-grade hydrogen chloride, chemical-grade hydrogen chloride, high-purity hydrogen, high-purity acetylene, oxygen, nitrogen, argon, carbon dioxide, hydrogen, helium and sulfur hexafluoride. The company's electronic-grade hydrogen chloride has passed the inspection of the National Research Center for Reference Materials and the Special Materials Quality Supervision and Inspection Center of the Ministry of Information Industry respectively.

3. Hunan Aixi Technology Development Co., Ltd. is located in Changsha National Bio-industrial Base, with an investment of 48 million yuan and an area of 30 mu, specializing in the production of industrial gases and special gases. The company is mainly engaged in the production and sales of oxygen, nitrogen, argon, carbon dioxide, hydrogen, helium and other mixed gases and various liquid gases, as well as the research and development, production and sales of special gases. At the same time, the company provides customers with gas solutions, gas pipeline engineering design and installation.

4. Beijing Tiandi Shouhe Technology Development Co., Ltd. was established on 20 12 with a registered capital of 5 million. Our company is a company specializing in instrument production, sales and agency services. The company has a good foundation for extensive agency and sales cooperation with famous instrument manufacturers at home and abroad. Our products are mainly used in agriculture, environmental protection industry, scientific research departments, teaching institutions and environmental monitoring stations.

Shaanxi senyuan intelligent technology co., ltd is headquartered in xi city, Shaanxi province. Our company is a key high-tech enterprise in China, mainly engaged in R&D, producing and operating indoor and outdoor vacuum circuit breakers, load switches, disconnectors, low-voltage universal circuit breakers, molded case circuit breakers, complete sets of high and low-voltage electrical equipment, box-type substations and other projects.

Extended data 1 and characteristics of sulfur hexafluoride

Sulfur hexafluoride is a colorless, odorless, nontoxic and nonflammable stable gas with the chemical formula SF? Its molecular weight is 146.07, and its density at 20℃ and 0. 1 MPa is 6. 1kg/m3, which is about five times that of air. Sulfur hexafluoride is gaseous at normal temperature and pressure, its critical temperature is 45.6℃, its triple point temperature is -50.8℃, and its sublimation point temperature is -63.8℃ at normal pressure.

2. Storage method of sulfur hexafluoride

Closed operation, local exhaust. Operators must be specially trained and strictly abide by the operating procedures. It is recommended that the operator wear a filter gas mask (half mask). Keep away from flammable and combustible materials. Prevent the gas in the workplace from leaking into the air. Avoid contact with oxidants. Lightly load and unload when handling, so as to prevent the cylinders and accessories from being damaged. Equipped with leakage emergency treatment equipment.

3. Environmental impact of sulfur hexafluoride

Although sulfur hexafluoride itself is non-toxic and harmless to human body, it is a kind of greenhouse gas. The greenhouse effect of single molecule is 22,000 times that of carbon dioxide, and it is one of the six greenhouse gases prohibited by Kyoto Protocol.

According to the global warming potential (GWP) index of various greenhouse gases proposed by IPCC, the GWP of sulfur hexafluoride is the largest, with a GWP of 32,400 in 500 years, and sulfur hexafluoride can remain in the atmosphere for as long as 3,200 years due to its high chemical stability.