Supply of high-purity gases

Ltd. Beijing Xin Wang in Beijing Union Beijing Daxing District Huangcun Town Daxing village south 400 meters Suncun incorporated in June 25, 2004, the company mainly engaged in dispensing carbon dioxide; laws and regulations prohibited, not be operating; shall be subject to approval, shall not operate without the prior permission; laws and regulations did not provide for approval, choose the project operator, to carry out business activities, registered number of employees to 12 people, the registered capital of 620,000 yuan, company telephone number is 13070162733 and look forward to your inquire Ltd. Beijing Xin Wang Union production and operation of industrial gases, high purity gases, electronic gases, standard gases, gas mixtures, liquefied gas, widely used in chemical industry, electronics, machinery, petroleum , building materials, electricity, environmental protection, food, pharmaceutical, research and other fields, the products are sold throughout the country. Uphold the integrity, the operating principle of enthusiasm and dedication to customer service. Company Manager Zhou with the staff wholeheartedly welcome your visit. Tel: 13070162733 (1) wholesale and retail, one from the sale (2) Customers can choose their own desired variety (3) to provide ancillary services (4) booking, purchasing various types of gas contracts or special gas (5) The temporary lack of swap library specifications, eliminating the need for you to run around the procurement of hard work (6) arrange transportation, a large quantity straight hair your location (7) weekends and holidays, pick-mentioned (8) the sale of gas, the center responsible comprehensive quality tracking, you exclude worries of high purity ethylene Description English name: ethylene, E. P. Synonyms: CAS: 74-85-1 Product Name: High-purity ethylene Chemical WWW.dirchem.com directory molecular structure: CH2 = CH2 formula: high-purity ethylene detailed in nature: under normal temperature and pressure a colorless, flammable gas, with a little sweet and musty. At 0 ℃ and latm gas relative density (Air = 1) 0.978. Boiling point -103.8 ℃, melting point -169.4 ℃. Flammable in air limit of 2.9% to 79.9% (volume). Gas density 1.261kg / m3 (0 ℃, 0.l01MPa). Liquid Density 567.47kg / m3 (-103.8 ℃). Critical temperature 9.900 ℃, the critical pressure 5117.0kPa, critical density Z28kg / m3. Triple Point -l09,15 ℃ (0.l014kPa). Latent heat of vaporization 484kJ / kg, latent heat of fusion 119kl / kg. 15 ℃ and Iatm lower gas heat capacity [KJ / (kg · ℃): Cp1.516, Ca1.220.0 ℃ in water solubility of 0.26 (volume ratio). Flammable limit in air of 2.7% to 36%. Auto-ignition temperature in air 490 ℃. Chemically active and can form explosive mixtures with air, very explosive. With chlorine compounds generated intense explosion in the sunlight. Can react with strong oxidizing agent, in case of danger Mars, heat, combustion gas has a combustion explosion. Slightly soluble in alcohols, ketones, benzene, ether-soluble. At 25 ℃, about 9 parts water to 1 part of ethylene dissolved. Method: Ethylene industry products as raw materials, the use of molecular sieve adsorbent to achieve the co-adsorption of water, carbon dioxide, acetylene and ethylene impurities. Uses: widely used as a standard high-purity ethylene gas, and the preparation of calibration gas standard gas mixture containing ethylene