Glorious gas supply Qingdao Huangdao District Qingdao _ [] _ ??nitrogen nitrogen find

Glorious gas, Qingdao Huangdao District, Qingdao find nitrogen supply _ [] _ ??nitrogen gas provided by the Glorious. We are Qingdao Glorious Gas Co. (www.hengshenggas.com) at: Qingdao specializing in: industrial gas nitrogen at normal physical condition is a colorless and odorless gas nitrogen looking Qingdao, the gas density at standard conditions was 1.25g · dm-3, the melting point of 63K, the boiling point of 75K, a critical temperature of 126K, which is difficult to liquefied gas. The solubility in water is very small, at 283K, one of the water soluble to about 0.02 volume of N2. Nitrogen at very low temperatures will be liquefied into a white liquid, further lowering the temperature, it will form a white crystalline solid. The usual market supply of nitrogen gas bottles are filled in black save. Under normal conditions, the chemical nature of the nitrogen Qingdao price, nitrogen for most of the reactants are relatively inert love of. At room temperature under a nitrogen element can be fixed in a biological system. Mechanism of this process is still unknown. Further, nitrogen has been shown recently, certain transition metal complexes capable of rapid reaction with the atmospheric nitrogen. At high temperatures, nitrogen becomes more lively, and can be combined with hydrogen, oxygen, and some metal: 3H2 + N2 → 2NH3 O2 + N2 → 2NO 3M + N2 → M3N2 (M = Ca, Mg, Ba) when nitrogen gas at low pressure next by a glow discharge tube, nitrogen becomes very lively and nitrogen Huangdao price, this form of nitrogen is called reactive nitrogen. reactive nitrogen easily with many metals (Hg, As, Zn, Cd and Na) and non-metal (P and S) nitriding reaction, physical properties of nitrogen the nitrogen is a colorless, odorless gas, the share of the air ratio is about 78% (by volume), and in the form of protein, such as ammonia nitrogen compounds widely distributed in nature. At room temperature without chemical activity, not compounds with other substances. Industrial cooling air, and oxygen, argon, etc. separated together with refined. 28.01 molecular formula N2 gas density 1.251kg / m3 (0 ° C, 1atm) liquid density 0.809kg /? (Boiling) the proportion of 0.97 (air = 1) the boiling point of 77.4K (1atm) m.p. 63.3K (1atm) Critical Temperature 126K critical pressure 33.5atm, 3.399MPa evaporation heat 47.7cal / g, 199kJ / kg (boiling) the use of nitrogen as nitrogen can be used in different commercial applications, including: --- for the chemical process, and the protective container of inert oxygen-sensitive chemicals , but by creating an oxygen environment to reduce security risks; drives the liquid through a pipe; and the manufacture of ammonia. Food --- nitrogen to prevent oxidation packaged foods, mold growth, moisture and pests, thus prolonging the validity shelves; quick freezing; and during transport of perishable foods refrigerated. --- Enhance oil recovery and refining recovery efficiency and to maintain the pressure of oil and gas storage reservoir; blanket of inert protect storage tanks and loading / unloading goods; purge pipeline; and from the wastewater stream stripping of volatile organic compounds (VOC) or cooling emission stream.