C21H46ClN
348 g/mol
cosmetic_ingredientDanger
Trimethylstearylammonium chloride
CAS112-03-8EC203-929-1
Category
cosmetic_ingredient
Compound Class
Other
Primary Use
Cationic surfactant in cosmetics
Trimethylstearylammonium chloride is a quaternary ammonium salt used as a cationic surfactant in cosmetic formulations. It is known as Steartrimonium Chloride in cosmetic ingredient listings and is found in various consumer products for its conditioning properties.
Cationic surfactant in cosmeticsHair conditioning agentIngredient in personal care products
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Related Compounds
StrongSame Parent
Steartrimonium bromide
CAS1120-02-1
Surfactant in personal care products
StrongStructure SimilarSimilarity 1.00
Hexadecyltrimethylammonium nitrite
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pharmaceutical raw material
StrongStructure SimilarSimilarity 1.00
Tetradonium chloride
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pharmaceutical raw material
StrongStructure SimilarSimilarity 1.00
Cetrimonium bromide
CAS57-09-0
Quaternary ammonium antiseptic and surfactant
StrongStructure SimilarSimilarity 1.00
Tetradonium bromide
CAS1119-97-7
pharmaceutical raw material
ReferenceSame Category
Myristyl alcohol
CAS112-72-1
emollient and fragrance fixative
ReferenceSame Category
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CAS112317-46-1
cosmetic peptide for wrinkle improvement
ReferenceSame Category
Magnesium ascorbyl phosphate
CAS113170-55-1
Cosmetic ingredient for skin care
Safety Reference
Danger
H302Harmful if swallowed
H311Toxic in contact with skin
H312Harmful in contact with skin
H314Causes severe skin burns and eye damage
H318Causes serious eye damage
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects
Customs Tariff Classification
The international HS code for Trimethylstearylammonium chloride (CAS 112-03-8) is 2923.90.
HS code (international, 6-digit)
2923.90
EU CN code (8-digit)
2923 90 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
trimethyl(octadecyl)azanium chloride
InChIKey
VBIIFPGSPJYLRR-UHFFFAOYSA-M
SMILES
CCCCCCCCCCCCCCCCCC[N+](C)(C)C.[Cl-]
Synonyms (24)
- OTAC
- Aliquat 7
- Arquad 18
- Arquad 18-50
- Cation AB
- Nissan cation AB
- Stac
- Steartrimonium chloride
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