| Description | Nitrogen formula N2, under normal conditions is a colorless and odorless gas, and generally non-toxic. Accounting for 78.12% of the total nitrogen atmosphere (volume fraction), is the main component of air. Under normal atmospheric pressure, cooling to -195.8 ℃, no color becomes liquid when cooled to -209.8 ℃, liquid nitrogen into the snow-like solid. Inert chemical nature of nitrogen, at room temperature, the reaction hardly occurs with other substances, but at elevated temperatures, high energy condition chemical changes may occur with certain substances, for the preparation of new substances useful to mankind. |
| Usage | Ammonia is used, etc. |
| Precautions | 1, health hazard: air, nitrogen content is too high, the suction gas decreased partial pressure of oxygen, causing asphyxia. When inhaled nitrogen concentration is not too high, the patient initially feel chest tightness, shortness of breath, weakness weakness; then there is irritability, extreme excitement, running around, shouting, trance, unsteady gait, called "nitrogen drunkenness", can enter the lethargy or coma. Inhalation of high concentrations, patients can quickly coma, respiratory and cardiac arrest and death. 2, the product must be non-combustible, case of high fever, increased pressure within containers, cracking and the risk of explosion. |
| By Industry | Chemical synthesis, car tires |
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