Denatonium Benzoate


N,N-Diethyl-N-[(2,6-dimethylphenyl¬carbamoyl)¬methyl]¬benzyl¬ammonium benzoate;
Benzyldiethyl(2,6-xylyl¬carbamoyl¬methyl)¬ammonium benzoate;
phenylmethyl-[2- [(2,6-dimethylphenyl)amino]- 2-oxoethyl]-diethylammonium benzoate; Bitrex

Technical Data

CAS Number: 3734-33-6
Molecular Formula: C28H34N2O3
Molecular Weight: 446.58
Beilstein Registry Number: 8179408
EC Number: 223-095-2

FabriChem Specifications

AppearanceWhite needles
Assay99 -101.0%
Melting Range163-1700 C
Sulfated Ash0.1% Max.
pH (3% aq)6.5 – 7.5
Loss on Drying1.0% Max.
Chloride80 ppm Max.
Heavy Metals40 ppm Max.
Particle Size1.2 – 1.5 mm dia needles
APHA of 25% w/w in MEG50 Max.

Molecular Structure



Denatonium, usually available as Denatonium and as Denatonium Saccharide, is the most bitter chemical compound known, with bitterness thresholds of 0.05 ppm for the benzoate and 0.01 ppm for the saccharide. They are used as aversive agents (bitterants) to prevent inappropriate ingestion of chemical and hazardous products. Denatonium is used in denatured alcohol, anti-freeze, respirator mask fit-testing, animal repellents, liquid soaps, and shampoos.