Listing ID #5501774
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Contact SupplierPure caffeine (trimethylxanthine) is a white powder or a silky needles, which is melt at 238 °C (460 °F); it sublimes at 178 °C (352 °F) at atmospheric pressure. It is very soluble in hot water; upon cooling, the solution deposits crystals of caffeine monohydrate. Caffeine is generally less soluble in organic solvents than in hot water. It is odourless but has a bitter taste.