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Trichloroisocyanuric Acid (TCCA) is a broad-spectrum

A convenient and efficient phosphine-free procedure for the one-pot conversion of primary, secondary and tertiary alcohols into the corresponding alkyl thiocyanates or alkyl isothiocyanates is described usingTrichloroisocyanuric Acid (TCCA)/NH4SCN.
 According to the present method, when adding Trichloroisocyanuric Acid (TCCA) in 20% KI solution, the produced iodine (I2) immediately adsorbed by the resin bead. For example, according to one theory 20% KI solution 100 mL can make 15 g iodine (I2) in situ when there is about 4.2 g of 100% chlorine. Since in certain embodiments, the chlorine source, such as TCCA, may not release 100% chlorine, condition may require excess TCCA or other chlorine source. In contrast, in the conventional procedure for loading resin using iodine crystal, it is possible to dissolve iodine crystal to a maximum of about 300 ppm, however, the iodine will then gradually adsorbed by the resin. Thus, the 
conventional process requires significantly more time for iodine loading of the resin since first the iodine must dissolve into the water and then be adsorbed by the resin.
Trichloroisocyanuric Acid (TCCA) (trade name: TCCA, abbreviated as TCCA) is a broad-spectrum, high efficiency, low toxicity of disinfectants, bleaches and preservatives, is one of the chlorinated isocyanurate products, TCCA may direct dubbed various formulations, are widely used in medical treatment, swimming pools, restaurants, sericulture, agriculture, fisheries, textiles, paper and other industries sterilization bleach. It is not toxic, mouse port LD_ (50) = 0.72 ~ 0.78g / kg, available chlorine in the water at 100 × 10 ~ (-6) or less harmless. US Federal Food and Drug Administration (FDA) and the Environmental Protection Agency (BPA) has been officially approved, allow the product for food.