Sodium ethyl xanthate Sodium ethyl xanthate Sodium ethyl xanthate (SEX) is an organosulfur compound with the chemical formula CHCHOCSNa. It is a pale yellow powder, which is usually obtained as the dihydrate. Sodium ethyl xanthate is used in the mining industry as a flotation agent. A closely related potassium ethyl xanthate (KEX) is obtained as the anhydrous salt. As with most xanthates, sodium ethyl xanthate can be prepared by treating sodium ethoxide with carbon disulfide: Sodium ethyl xanthate is a pale yellow powder. It is relatively stable in water at high pH if not heated. It rapidly hydrolyses at pH <9 at 25
Ethyl iodide excellent ethylating agent. It is also used as the hydrogen radical promoter. Ethyl iodide is prepared by using red phosphorus, absolute ethanol and iodine ; the phosphorus and iodine dissolve in the ethanol, where they form phosphorus triiodide, which must be formed "in situ" because it is unstable. During the process the temperature is controlled. The crude product is purified by distillation. Ethyl iodide Ethyl iodide (also iodoethane) is a colorless, flammable chemical compound. It has the chemical formula CHI and is prepared by heating ethanol with iodine and phosphorus. On contact with air, especially on the effect of light,