|Benzetimide||Benzhydrylamine||Benzil||Benzil Dioxime||Benzilic Acid|
|Jmol-3D images||Image 1
|Molar mass||448.08 g mol−1|
|Melting point||163 °C; 325 °F; 436 K|
|Solubility in water||40 g dm-3 (at 20 °C)|
|GHS signal word||Danger|
|GHS hazard statements||H301, H314, H400|
|GHS precautionary statements||P273, P280, P305+351+338, P310|
|R-phrases||R22 R37/38 R41|
(what is: / ?)|
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
Benzethonium chloride is a synthetic quaternary ammonium salt. This compound is an odorless white solid; soluble in water. It has surfactant, antiseptic, and anti-infective properties, and it is used as a topical antimicrobial agent in first aid antiseptics. It is also found in cosmetics and toiletries such as mouthwashes, anti-itch ointments, and antibacterial moist towelettes. Benzethonium chloride is also used in the food industry as a hard surface disinfectant.
Benzethonium chloride exhibits a broad spectrum of microbiocidal activity against bacteria, fungi, mold and viruses. Independent testing shows that benzethonium chloride is highly effective against such pathogens as methicillin-resistant Staphylococcus aureus, Salmonella, Escherichia coli, Clostridium difficile, hepatitis B virus, hepatitis C virus, herpes simplex virus (HSV), human immunodeficiency virus (HIV), respiratory syncytial virus (RSV), and norovirus.
The US Food and Drug Administration (FDA) specifies that the safe and effective concentrations for benzethonium chloride are 0.1-0.2% in first aid products. Aqueous solutions of benzethonium chloride are not absorbed through the skin. It is not approved in the US and Europe for use as a food additive. Being a quaternary ammonium salt, it is more toxic than negatively charged surfactants. However, in a 2 year study on rats, there was no evidence of carcinogenic activity.
In addition to its highly effective antimicrobial activity, benzethonium chloride contains a positively charged nitrogen atom covalently bonded to four carbon atoms. This positive charge attracts it to the skin and hair. This contributes to a soft, powdery afterfeel on the skin and hair, as well as long-lasting persistent activity against microorganisms. Also, this positively-charged hydrophillic part of the molecule makes it a cationic detergent.
It is available under trade names Salanine, BZT, Diapp, Quatrachlor, Polymine D, Phemithyn, Antiseptol, Disilyn, Phermerol, and others. It is also found in several grapefruit seed extract preparations and can be used as a preservative, such as in the anaesthetic Ketamine.
In Popular Media
In Star Trek: Enterprise, benzethonium is used as a painkiller in hospitals on the planet Risa. Ensign Travis Mayweather was given it after a rock climbing accident but he turned out to be allergic.