Acids & Salts Available — Bulk Only

Cetalkonium Chloride (Benzyldimethylhexadecylammonium Chloride)

CAS 122-18-9 · Formula C25H46ClN · MW 396.1 g/mol

A single-chain quaternary ammonium cationic surfactant used as a germicidal and fungicidal additive in leather processing and textile dyeing, in silicone-based water-repellent formulations, and as a cosmetic preservative.

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UN Number
UN 3082
Hazard Class
Class 9
At a Glance
Material Family
Acids & Salts
Record Type
Pure compound
Primary Role
Biocidal Action · Preservation
Functional Roles
CETALKONIUM CHLORIDE
ANTIMICROBIALANTISTATICPRESERVATIVE
Applications & Use Cases
  • Leather processing: germicidal/fungicidal quaternary additive
  • Textiles: cationic agent in dyeing and finishing
  • Water repellents: component of silicone-based treatments
  • Cosmetics: preservative-classified quaternary ammonium ingredient
Physical Properties
Physical Description
Solid; White powder
Safety & Handling
Full SDS available on request

A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.

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DOT / UN Transport Classification
DOT hazard class 9 placard
UN / DOT NumberUN 3082
Hazard Class / DivisionClass 9
Proper Shipping NameEnvironmentally hazardous substance, liquid, n.o.s.

Transport classification per the UN Model Regulations / 49 CFR 172.101 Hazardous Materials Table. Confirm against the grade-specific SDS (Section 14) before shipping.

Chemical Identity
CAS Number
122-18-9
Molecular Formula
C25H46ClN
Molecular Weight
396.1 g/mol
IUPAC Name
benzyl-hexadecyl-dimethylazanium chloride
INCI Name
CETALKONIUM CHLORIDE
PubChem CID
InChI Key
SXPWTBGAZSPLHA-UHFFFAOYSA-M
Synonyms & Trade Names
Cetalkonium chloride Benzyldimethylhexadecylammonium chloride Cetyl zephiran Banicol Acinol Cdbac Bicetonium Zettyn Cetyldimethylbenzylammonium chloride Benzaletas Tetraseptan Baktonium Cetylon Cetol Dmcbac Spilan Benzylhexadecyldimethylammonium chloride Ammonyx G Dehyquart CBB
Full Description

Cetalkonium Chloride (benzyldimethylhexadecylammonium chloride, CAS 122-18-9) is a quaternary ammonium cationic surfactant. Per the Merck Index it is used as a germicide and fungicide in leather processing, textile dyeing, and silicone-based water-repellent formulations, and it is classified as a cosmetic preservative. Supplied in bulk for industrial and personal-care use.

Frequently Asked Questions

What is another name for this quaternary ammonium chloride?

CAS 122-18-9 is most commonly traded as cetalkonium chloride (benzyldimethylhexadecylammonium chloride). The systematic name on the spec sheet is benzenemethanaminium, N,N-dimethyl-N-octadecyl-, chloride (1:1). It is a single-chain quaternary ammonium cationic surfactant.

Is this the same as benzalkonium chloride?

No. Benzalkonium chloride (BAC, CAS 8001-54-5) is a mixture of alkyldimethylbenzylammonium chlorides of varying chain length, whereas this product is a defined single-alkyl-chain quaternary (CAS 122-18-9). They are related cationic surfactants but distinct chemical identities with different CAS numbers.

What is this quaternary ammonium compound used for?

It is a cationic surfactant used industrially as a germicidal/fungicidal additive in leather processing, as a cationic agent in textile dyeing and finishing, and as a component of silicone-based water-repellent treatments. It is also classified as a cosmetic preservative ingredient.

What molecular formula and CAS number should I cite on procurement documents?

Molecular formula C25H46ClN, CAS 122-18-9. The HS classification is 292390 (quaternary ammonium salts). Request the CoA and SDS with each lot to confirm assay and identity for your formulation records.

What is the cost of bulk quaternary ammonium surfactant and what packaging is available?

Pricing depends on volume, grade, and current cationic-surfactant raw-material markets, so we quote rather than list a fixed price. Submit a bulk RFQ with your target volume and packaging (drum/IBC/tote) and we will return a quote plus current CoA and SDS.

Disclaimer. Information on this page — including properties, identifiers, hazard, transport (DOT/UN) and tariff (HS) classifications, and applications — is provided for general reference and is compiled from authoritative public sources (e.g. PubChem/ECHA, 49 CFR 172.101, the Harmonized Tariff Schedule). Values are typical and are not a guaranteed specification; the Certificate of Analysis (CoA) for the lot purchased governs. Products are sold for industrial and professional use only. Nothing here is a medical, health, or efficacy claim or advice. Always consult the current Safety Data Sheet (SDS) before handling, storage, transport or disposal, and confirm regulatory status, classification and suitability for your application and jurisdiction. Hazard, transport and tariff classifications must be verified for your specific shipment. RawSource makes no warranty, express or implied, and assumes no liability for use of this information. Trademarks. Third-party trademarks and brand names are the property of their respective owners; any reference is nominative — used only to identify a comparable product — and does not imply affiliation with, sponsorship by, or endorsement by the trademark owner.