Determination of chlorine in organic matter. Reduction and hydrogenation of organic compounds. Test nitrogen, sulfur, and fluorine in organic matter. Remove moisture from organic solvents (benzene, hydrocarbons, ethers). Remove impurities such as oxygen, iodine or hydriodic acid from hydrocarbons. Prepare sodium amalgam, sodium alcoholate, pure sodium hydroxide, sodium peroxide, sodium amide, alloys, sodium lamps, photovoltaic cells, and prepare active metals.