121-54-0 Benzethonium chloride AKSci M019
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Benzethonium chloride
, 98% (HPLC)
Hyamine 1622
(Diisobutylphenoxyethoxyethyl)dimethylbenzylammonium chloride
Phemerol chloride

CAS Number:121-54-0
MDL Number:MFCD00011742
Purity:98% (HPLC)
Spectra:NMR, HPLC
Physical Form:White to off-white crystalline powder or powder
Melting Point:157-165°C
Long-Term Storage:Store at room temperature
UN #:UN2923
Hazard Class:8 (6.1)
Packing Group:III


 Benzethonium chloride is a bactericidal cationic quaternary ammonium surfactant used as a topical anti-infective agent. It is an ingredient in medicaments, deodorants, cosmetics, toiletries, mouthwashes, , anti-itch ointments, and antibacterial moist towelettes., and is used to disinfect equipment in the food processing and pharmaceutical industries, in surgery, and also as a preservative. The compound is toxic orally as a result of neuromuscular blockade. 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. 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.

[1]Rawlins, A. L.; Sweet, L. A.; Joslyn, D. A. Relation of chemical structure to germicidal activity of a series of quaternary ammonium salts Journal of the American Pharmaceutical Association (1912-1977) (1943), 32, 11-16.
[2] Mahendrabhai, Shah Dharmesh; Ramchandra, Wader Guruprasad Process for the manufacture of benzethonium chloride (BEC) Indian Pat. Appl. (2008), IN 2006MU01169 A 20080718.
[3] Wetterlow LH, Edsall G.The effect of benzethonium chloride on the antigens of pertussis vaccine. Int Arch Allergy Appl Immunol. 1970;37(2):143-53.
[4] Compton FH, Beagrie GS. Inhibitory effect of benzethonium and zinc chloride mouthrinses on human dental plaque and gingivitis. J Clin Periodontol. 1975 Feb;2(1):33-43.



Signal Word

Hazard Statements
H301; H314; H410

Precautionary Statements
P260; P264; P270; P273; P280; P301+P310; P301+P330+P331; P303+P361+P353; P304+P340; P305+P351+P338; P310; P321; P363; P391; P405; P501

Current as of August 21, 2019

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For research use only. Not for diagnostic or therapeutic use.
Not for human use.


 APIs and Bioactives > Antibacterials, Antivirals, Antiseptics
 Specialty Chemicals > Surfactants
 Specialty Chemicals > Surfactants