Thialdine is a basic heterocyclic chemical compound with the molecular formula C6H13NS2.
Preparation Thialdine was first synthesized by Justus von Liebig and Friedrich Wöhler in 1847 by passing hydrogen sulfide through a solution of acetaldehyde ammonia trimer, with thialdine crystallizing from the solution.
Acetaldehyde ammonia trimer is the cyclic trimer formed in the condensation reaction of acetaldehyde with ammonia:
The aldehyde ammonia does not need to be isolated as an intermediate.
The configuration of the three methyl groups in thialdine can differ, so that multiple cis-trans isomers are possible. However, X-ray diffraction has shown that in practice thialdine occurs in the all-cis configuration.
Uses Thialdine is used as a flavoring agent in foods. It is included in the list of flavoring substances authorized in the European UnionLijst van aromastoffen als bedoeld in Verordening 2232/96, tot opname van die lijst in bijlage I bij Verordening 1334/2008. (number 15.109) and is considered generally recognized as safe (GRAS) in the United States. The FEMA number of thialdine is 4018. Thialdine has a roasted meat smell and is therefore used as a flavoring in meat.The Good Scents Company: Thialdine
Salts of thialdine have been used as an antioxidant additive in lubricating oils.Hydrocarbon oil additive, U.S. Patent 2712526, July 5, 1955, Exxon Research Engineering Co.
Thialdine and similar compounds have been proposed as rubber vulcanization accelerators.Rubber vulcanization accelerator, U.S. Patent 1664481, April 3, 1928, Rubber Service Lab Co.
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