Surfactants - Cationic Available — Bulk Only

Steartrimonium Chloride (Stearyltrimethylammonium Chloride)

NH4Cl / Sal Ammoniac
CAS 112-03-8 · Formula C21H46ClN · MW 348.0 g/mol

A mono-alkyl trimethyl quaternary-ammonium cationic used for hair conditioning and antistatic effect. It is used as a hair-conditioning agent in cosmetic formulations.

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HS Code
2923.90
At a Glance
Material Family
Surfactants - Cationic
Record Type
Pure compound
Primary Role
Conditioning · Preservation
Functional Roles
STEARTRIMONIUM CHLORIDE
ANTISTATICHAIR CONDITIONINGPRESERVATIVE
Applications & Use Cases
  • Hair conditioning: Provides cationic conditioning and detangling in hair-care products.
  • Antistatic agent: Reduces static charge on hair and fibers.
  • Cationic surfactant: Functions as a conditioning-grade quaternary surface-active agent.
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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HS / Tariff Classification
Harmonized System (HS) Code — 6-digit international heading
2923 . 90
Chapter 29
Organic chemicals
Heading 29.23
Internationally harmonized (WCO HS)
Subheading 2923.90
6-digit international code — national tariff line adds further digits
Chemical Identity
CAS Number
112-03-8
Molecular Formula
C21H46ClN
Molecular Weight
348.0 g/mol
IUPAC Name
trimethyl(octadecyl)azanium chloride
INCI Name
STEARTRIMONIUM CHLORIDE
PubChem CID
InChI Key
VBIIFPGSPJYLRR-UHFFFAOYSA-M
Synonyms & Trade Names
Trimethylstearylammonium chloride Stac Cation AB Aliquat 7 Stearyltrimethylammonium chloride Nissan cation AB Quaternium-10 Arquad 18 Stearyl trimethyl ammonium chloride Arquad 18-50 Monostearyl trimethyl ammonium chloride N,N,N-Trimethyl-1-octadecanaminium chloride trimethyl(octadecyl)azanium chloride N,N,N-trimethyloctadecan-1-aminium chloride Trimethyloctadecylammonium chloride OCTADECYLTRIMETHYLAMMONIUM CHLORIDE 1-Octadecanaminium, N,N,N-trimethyl-, chloride
Full Description

Steartrimonium chloride (stearyltrimethylammonium chloride, CAS 112-03-8) is a quaternary ammonium compound and cationic surfactant. It is used as a hair-conditioning agent in cosmetic formulations.

Frequently Asked Questions

What is stearyltrimethylammonium chloride used for?

Steartrimonium chloride (stearyltrimethylammonium chloride, CAS 112-03-8) is a quaternary ammonium compound and cationic surfactant used as a hair-conditioning agent. It provides cationic conditioning and detangling in hair-care products and reduces static charge on hair and fibers as an antistatic agent.

Is stearyltrimethylammonium chloride a cationic surfactant?

Yes. It is a single-chain quaternary ammonium salt carrying a positive charge on the nitrogen, which lets it adsorb to negatively charged hair and fiber surfaces. That charge is what drives its conditioning and antistatic performance.

Is stearyltrimethylammonium chloride the same as cetrimonium chloride?

No. Both are conditioning-grade trimethylammonium quaternary surfactants, but steartrimonium chloride (CAS 112-03-8) has a C18 stearyl alkyl chain, while cetrimonium chloride has a C16 cetyl chain. The chain length affects substantivity and feel in formulations.

How is stearyltrimethylammonium chloride supplied in bulk?

We supply it to manufacturers in bulk industrial packaging such as drums and totes. CAS is 112-03-8; HS classification is 2923.90 (quaternary ammonium salts, other). Request a quote with your volume and packaging for current bulk pricing, CoA, and SDS.

What HS code applies to stearyltrimethylammonium chloride?

It is classified under HS 2923.90, quaternary ammonium salts and hydroxides, other. Verify the exact destination subheading with your customs broker before import.

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.