CAS 112-03-8PubChem CID 8155
Stearyltrimethylammonium chloride
Stearyltrimethylammonium chloride is an organic molecular entity. — ChEBI
- IUPAC name
- trimethyl(octadecyl)azanium chloride
- Molecular formula
- C21H46ClN
- Molecular weight
- 348.0 g/mol
- Exact mass
- 347.3318782 Da
- Topological polar surface area
- 0.0 Ų
- Hydrogen-bond donors
- 0
- Hydrogen-bond acceptors
- 1
- Covalent units
- 2
- Defined stereocentres
- 0
Also known as
Trimethylstearylammonium chlorideStacCation ABAliquat 7Nissan cation ABQuaternium-10Arquad 18Stearyl trimethyl ammonium chloride
16 more reported names
Arquad 18-50Monostearyl trimethyl ammonium chlorideN,N,N-Trimethyl-1-octadecanaminium chlorideRefChem:871332N,N,N-trimethyloctadecan-1-aminium chlorideTrimethyloctadecylammonium chlorideOCTADECYLTRIMETHYLAMMONIUM CHLORIDE1-Octadecanaminium, N,N,N-trimethyl-, chlorideSteartrimonium chlorideStearyl trimethyl ammoium chlorideOctadecy trimethyl ammonium chloridetrimethyl octadecyl ammonium chlorideOctadecyl trimethyl ammonium chloridetrimethyloctadecylamine, chloridetrimethyl(octadecyl)azanium;chlorideEINECS 203-929-1
External database identifiers
- ChEBI:CHEBI:81710
- ChEMBL:CHEMBL118745
- EPA DTXSID:DTXSID1026902
Evidence from additional scientific databases
NIH PubChem PUG-View
Exact identifier match8155
Attributed physical-property, hazard, environmental and use annotations.
- Physical Description: CBI; Large Crystals Source: EPA Chemical Data Reporting (CDR)
- Carcinogen Classification: Not listed by IARC. Certain nitrosamines are classified by IARC as either probably or possibly carcinogenic to humans (Groups 2A and 2B, respectively). (L135) Source: Toxin and Toxin Target Database (T3DB)
- Exposure Routes: Oral (A2880) ; inhalation (A2880) ; dermal (L1889) Source: Toxin and Toxin Target Database (T3DB)
- Note: This chemical does not meet GHS hazard criteria for 3.7% (10 of 268) of reports. Source: European Chemicals Agency (ECHA)
- Signal: Danger Source: European Chemicals Agency (ECHA)
- GHS Hazard Statements: H302 (88.1%): Harmful if swallowed [Warning Acute toxicity, oral]; H311 (54.5%): Toxic in contact with skin [Danger Acute toxicity, dermal]; H312 (19.8%): Harmful in contact with skin [Warning Acute toxicity, dermal]; H314 (79.1%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]; H318 (29.5%): Causes serious eye damage [Danger Serious eye damage/eye irritation]; H400 (71.6%): Very toxic to aquatic life [Warning Hazardous to the aquatic environment, acute hazard]; H410 (78.7%): Very toxic to aquatic life with long lasting effects [Warning Hazardous to the aquatic environment, long-term hazard] Source: European Chemicals Agency (ECHA)
- Precautionary Statement Codes: P260, P262, P264, P264+P265, P270, P273, P280, P301+P317, P301+P330+P331, P302+P352, P302+P361+P354, P304+P340, P305+P354+P338, P316, P317, P321, P330, P361+P364, P362+P364, P363, P391, P405, and P501 (click each P-code to see the statement) Source: European Chemicals Agency (ECHA)
- ECHA C&L Notifications Summary: Aggregated GHS information provided per 268 reports by companies from 19 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.; Reported as not meeting GHS hazard criteria per 10 of 268 reports by companies.; There are 18 notifications provided by 258 of 268 reports by companies with hazard statement code(s).; Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website. Source: European Chemicals Agency (ECHA)
- Signal: Warning Source: NITE-CMC
- GHS Hazard Statements: H302: Harmful if swallowed [Warning Acute toxicity, oral]; H312: Harmful in contact with skin [Warning Acute toxicity, dermal] Source: NITE-CMC
- Precautionary Statement Codes: P264, P270, P280, P301+P317, P302+P352, P317, P321, P330, P362+P364, and P501 (click each P-code to see the statement) Source: NITE-CMC
- Signal: Danger Source: Hazardous Chemical Information System (HCIS), Safe Work Australia
- GHS Hazard Statements: H302: Harmful if swallowed [Warning Acute toxicity, oral]; H312: Harmful in contact with skin [Warning Acute toxicity, dermal]; H314: Causes severe skin burns and eye damage [Danger Skin corrosion/irritation] Source: Hazardous Chemical Information System (HCIS), Safe Work Australia
- Precautionary Statement Codes: P260, P264, P270, P280, P301+P317, P301+P330+P331, P302+P352, P302+P361+P354, P304+P340, P305+P354+P338, P316, P317, P321, P330, P362+P364, P363, P405, and P501 (click each P-code to see the statement) Source: Hazardous Chemical Information System (HCIS), Safe Work Australia
- Health Effects: Quaternium-10 may react to produce nitrosamines, which are believed to be carcinogenic. (L1890) Source: Toxin and Toxin Target Database (T3DB)
- Cosmetic Ingredient Review Conclusion: The CIR Expert Panel concluded the following ingredients are safe in the present practices of use and concentration described in the safety assessment when formulated to be non-irritating...Steartrimonium Chloride... Source: Cosmetic Ingredient Review (CIR)
- Cosmetic Ingredient Review Finding(s): Safe for use in cosmetics, with qualifications Source: Cosmetic Ingredient Review (CIR)
- Toxicity Summary: While quaternium-10 itself is not toxic, it is a nitrosating agent. Nitrosating agents may decompose and/or react to cause nitrosamine contamination. Nitrosamines are produced from secondary amines and amides in the presence of nitrite ions and are believed to be carcinogenic. Once in the body, nitrosamines are activated by cytochrome P-450 enzymes. They are then believed to induce their carcinogenic effects by forming DNA adducts at the N- and O-atoms. (L1889, L1890, A2878, A2879, A2880) Source: Toxin and Toxin Target Database (T3DB)
- Cosmetic Ingredient Review Link: CIR ingredient: Steartrimonium Chloride Source: Cosmetic Ingredient Review (CIR)
- Uses: Quaternium-10 is a quaternary ammonium salt found in numerous cosmetics. (L1890) Source: Toxin and Toxin Target Database (T3DB)
Mapped by: Existing checksum-valid CAS to unique PubChem CID match. Retrieved: 2026-08-31. Open source record
Scientific classifications and hazard annotations provide context and do not replace the market-specific regulatory decision shown above.
Additional source coverage and match status
| Source | Result | Checked |
|---|---|---|
| NIH PubChem PUG-View | Exact match | 2026-08-31 |
A recorded no-match is useful evidence that the source was checked; it is not a claim that the substance does not exist elsewhere.
Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.