OCR Text |
Show Easy Production of Argon. A simple method of obtaining argon in considerable quantity has been worked out by Fischer and Hinge, German Ger-man chemist. A powdered mixture of 40 per cent, of calcium carbide and ten per cent, of calcium chloride was heated to 800 degrees C, and after sufficient circulation over this both oxygen and nitrogen were completely absorbed from the air. The so-called crude argon remaining .0937 by volume vol-ume of the air used was a mixture containing 99.75 per cent, of argon and .25 per cent, of helium, neon, krypton and xenon. In two days about three gallons of crude argon was obtained. |