Aversive for humans         Aversive for animals          Aversive in plastics          Solutions     

The bitterest substance in the world. A few ppm will make your product so bitter that children will not be able to swallow it.

Research showed that people can detect Aversion® in water at 50 parts per billion. Denatonium benzoate is bitter at 1 to 10 parts per million (ppm). Most products will become bitter at 30 to 100 ppm.

Aversion® makes sweet but highly toxic products such as antifreeze and detergents taste foul.

Aversion® is also stable and inert. In addition, so little is needed that the properties of the product remain unchanged.

The National Safety Council and American Medical Association recommend Denatonium benzoate use in products defined as mild to moderately toxic.

Some countries like France have made Denatonium benzoate mandatory in antifreeze. Others such as Italy have made Aversion® the N° 1 denaturant for ethanol.

The state of Oregon has required that it be added to antifreeze and windshield wiper fluid since 1995.



Alcohol : approved in more than 40 countries.

Household Products : liquid laundry/detergent, fabric conditioner, toilet cleaner, disinfectant, antiseptics, kitchen cleaner, bathroom cleaner, floor cleaner, surface cleaner, cream cleaner, air freshener.

DIY Products : brush cleaner, paint stripper, sugar soap, wallpaper stripper.

Cosmetics : bath foam, soap, perfume, after shave, nail polish remover, shampoo, shower gel, body scrub, conditioner, anti nail biting.

Pesticides : Rodenticides, slug bait, fly bait, ant bait, mothballs, cockroach bait, and herbicides

Automotive Products : screen wash, antifreeze, coolant, car care cleaners
Others: fire starters, button cell batteries, shoe cleaning products, alcohol gel fuels.



Very easy to use
100% efficiency in protecting children & animals
Adds value to the protected products
Permanent and entire protection (better than safety caps)
Very small amounts needed

For handling ease, we recommend making an Aversion® solution with water, ethylene glycol or Ethanol. This reduces mixing time and bitter taste exposure.

Technical support and customized solutions are available upon request.



Chemical Names

A) Benzyldiethyl [(2,6-xylylcarbamoyl)methyl] ammonium benzoate
B) N-[2-[2,6-dimethyl phenyl)amino]-2-oxoethyl]-N,N- diethylbenzenemethanaminium benzoate
C) Denatonium Benzoate
Trademark: Aversion®
INCI Name: Denatonium Benzoate
EC Number: 2230952
CAS Registry Number: 3734-33-6
Molecular Formula: C28 H34 N203



Appearance: White odorless powder
pH: 6.5-7.5
Melting point: 163-170°C
Chloride: 0.3% max
Loss on drying: 1.0% max
Assay: 99.5-101.0%


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