| Description | Argon is a noble gas, GB Number 22011, CAS No. 7440-37-1, formula Ar, the molecular weight of 39.95, colorless and odorless inert gas; vapor pressure 202.64kPa (-179 ℃); mp -189.2 ℃; boiling point -185.7 ℃ solubility: slightly soluble in water; density: the relative density (water = 1) 1.40 (-186 ℃); relative density (air = 1) 1.38; stability: Stable; danger mark 5 (non-combustible gases); main uses: Used bulb inflator and stainless steel, magnesium, aluminum and other arc welding, or "welding." |
| Usage | Is used as arc welding (cutting) of stainless steel, magnesium, aluminum, and other alloys of the protective gas. Also used in steel, aluminum, titanium and zirconium smelting. Argon issued purple glow discharge, but also for fluorescent lighting technology and filling. Photocell, lighting tubes. |
| Precautions | Health Hazards: Normal atmospheric pressure non-toxic. High concentrations, so that the oxygen partial pressure lowering and asphyxia. Argon concentration of more than 50%, causing serious symptoms; more than 75%, may die within minutes. When argon concentration in the air increased, first appeared breathing, inability to concentrate, ataxia. Followed, fatigue, irritability, nausea, vomiting, coma, convulsions, and even death. Liquid argon can cause skin frostbite; eye contact can cause inflammation. Toxicology information and environmental behavior hazardous characteristics: case of high fever, increased pressure within containers, cracking and the risk of explosion. |
| By Industry | Metal processing and manufacturing, photovoltaic and energy |
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