Ethyl vanillin
Ethyl vanillin is a synthetic flavouring substance that is very similar to vanilla flavouring, but is characterised by ist stronger flavour intensity. The organic chemical compound belongs ot he aromatics group. Ethyl vanillin is produced exclusively synthetically; it does not occur naturally. It is mainly used as a flavouring agent in the food and beverage industry.
Properties of ethyl vanillin
Ethyl vanillin is a white to light yellow crystalline solid with a sweet-creamy, floral odour. The substance is hardly soluble in water, but is soluble in ethanol and ether. Synthetic ethyl vanillin differs from natural vanillin in that the methyl group is replaced by an ethyl group.
Ethyl vanillin is produced by chemical synthesis - similar to the production of vanillin. Various chemical compounds are used as starting materials, often guaiacol (2-methoxyphenol) or catechol. Through ethoxylation, an ethoxy residue is bound to the aromatic ring system. This is followed by oxidation of the side chain on the benzene ring. This reaction leads to the formation of the aldehyde group (-CHO) in the molecular structure, which is considered characteristic of ethyl vanillin. Oxidation takes place by air oxidation or by the use of specific oxidising agents. Finally, the product is purified by distillation or crystallisation to obtain pure ethyl vanillin.