Potassium ethyl xanthate Potassium ethyl xanthate Potassium ethyl xanthate (KEX) is an organosulfur compound with the chemical formula CHCHOCSK. It is a pale yellow powder that is used in the mining industry for the separation of ores. Unlike the related sodium ethyl xanthate, the potassium salt exists as an anhydrous salt. Xanthate salts are prepared by the action of alkoxides on carbon disulfide. The alkoxide is often generated in situ from potassium hydroxide: Potassium ethyl xanthate is a pale yellow powder that is stable at high pH but rapidly hydrolyses at pH <9 at 25 °C. Unlike the sodium derivative, potassium xanthate crystallizes
Ethyl methylphenylglycidate prepared by the condensation of acetophenone and the ethyl ester of monochloroacetic acid in the presence of a base, in a reaction known as the Darzens condensation. Long-term, high-dose studies in rats have demonstrated that ethyl methylphenylglycidate has no significant adverse health effects and is not carcinogenic. The US Food and Drug Administration has classified ethyl methylphenylglycidate as generally recognized as safe (GRAS). Ethyl methylphenylglycidate Ethyl methylphenylglycidate, commonly known as "strawberry aldehyde", is an organic compound used in the flavor industry in artificial fruit flavors, in particular strawberry. Because of its pleasant taste and aroma, ethyl methylphenylglycidate finds use in