Polish version

Didecyldimethylammonium acesulfamate

Didecyldimethylammonium acesulfamate – an ionic liquid with fungicidal and bactericidal properties. The compound may be used as an active agent in cosmetic preparations, such as:

  • toothpastes,
  • antiseptic mouth rinses.

It has no toxic effect on warm-blooded organisms (toxicity class IV).

Structural formula:


chemical formula: C26H52N2O4S

molar mass: 488.8 g/mol

Didecyldimethylammonium acesulfamate is a thick liquid, with color from light-yellow to willow-green-lemon, specific, pleasant smell and sweet taste.

Well soluble in chloroform, chloromethane and ethanol but poorly soluble in warm and cold water. Total decomposition temperature is 483 °C.

A brief description of the technology

Didecyldimethylammonium acesulfamate is obtained in a reaction between didecyldimethylammonium chloride and potassium acesulfamate, conducted in aqueous environment. The product is separated by extraction with methylene chloride. The ionic liquid, solved in an organic solvent, is concentrated by distillation under reduced pressure.

Purification of the product is conducted with extraction methods.

In order to remove water, additional drying of the product is needed, at increased temperature and under reduced pressure.

Advantages of the technology offered

The technology is simple, energy-saving and low-waste.

The environment of the reaction is aqueous and methylene chloride used can be turned back and used in the next synthesis. A waste product is potassium chloride.

The reaction proceeds with big efficiency.

The technology has been implemented on the scale about 5 kg per batch.


A glass reactor with bottom drain valve, fitted with a high-performance, high speed mechanical stirrer, a thermometer and a dephlegmator, which can be exchanged for a distillation set. Additionally it should be equipped with a heating / cooling jacket, enabling to heat up or cool down the contents.

Auxiliary equipment consists of:

  • thermostat,
  • membrane vacuum pump,
  • vacuum evaporator (for final drying of the product).

A precise description of analytic methods is included in a factory standard, worked out for the product.

Market competitiveness

Product interchangeable with commonly used biocidal constituents with similar or better bactericidal and fungicidal properties, but of better, more acceptable taste. It is non-toxic for warm-blooded organisms and price-attractive.


Anna Wiśniewska, M.Sc., Chem. Eng.

phone: + 48 22 568 21 93