Denatonium
Denatonium is a synthetic bitter compound used as an aversive agent to prevent the ingestion of harmful substances. It is the bitterest substance known, with a detectable bitter taste at concentrations as low as 0.01 parts per million (ppm) and becoming unbearably bitter at 2 ppm[1]. This property makes it an effective deterrent against accidental ingestion, particularly in household products, cosmetics, pesticides, and other substances that could be harmful if ingested.
Denatonium is commonly used in a variety of applications, including:
- Household products: Added to cleaning products, cosmetics, and other household items to prevent accidental ingestion by children or pets[1].
- Animal repellents: Used in squirrel, vole, dog, and cat repellents to deter these animals from approaching or ingesting certain substances[1].
- Denatured alcohol: Added to denatured alcohol to make it unpalatable and prevent human consumption[1].
- Preventive nail biting preparations: Used to deter nail biting by making the nail taste bitter[1].
- Liquid soaps and toy products: Added to prevent accidental swallowing or choking by children[1].
Denatonium benzoate, a variant of denatonium, has been studied for its effectiveness in reducing the ingestion of toxic substances. It has been shown to be effective in reducing the amount of liquid dish detergent ingested by children when added to the detergent at a concentration of 10 ppm[2]. The toxicity of denatonium benzoate is considered low, with an acute oral LD50 (the dose required to kill 50% of test subjects) in rats ranging from 485 to 740 milligrams per kilogram[2].
Denatonium saccharide, another variant, is also used as a bittering agent and has been found to be stable and inert, making it suitable for use in a wide range of products without affecting their properties[1]. It is available for purchase from scientific suppliers, such as ScienceKitStore.com, in various quantities and purities[1].
In summary, denatonium and its variants are highly effective bitter compounds used to prevent the accidental ingestion of harmful substances and to deter animals from approaching or ingesting certain substances. Their use is widespread and considered safe, with low toxicity and no known long-term health risks[1][2].
Citations:
[1] https://sciencekitstore.com/denatonium-saccharide/
[2] https://pubmed.ncbi.nlm.nih.gov/8351798/
[3] https://www.skcinc.com/products/bitter-sensitivity-threshold-testing-solution-denatonium-benzoate-50-ml
[4] https://www.sigmaaldrich.com/US/en/product/aldrich/d5765
[5] https://www.amazon.com/Denatonium-Benzoate-Bitter-Compound-Ingredient/dp/B0CJPVDMBP