Octadecy trimethyl ammonium bromide
- CAS No.
- 1120-02-1
- Chemical Name:
- Octadecy trimethyl ammonium bromide
- Synonyms
- OCTADECYLTRIMETHYLAMMONIUM BROMIDE;183B;OctMAB;[M3C18N]Br;FENTACARE 1831B;Einecs 214-294-5;Stearyl Trimethyl Am;Steartrimonium bromide;StearylTrimethylAmmoiumb;Stearyltrimethylaminium·bromide
- CBNumber:
- CB9402472
- Molecular Formula:
- C21H46BrN
- Molecular Weight:
- 392.5
- MDL Number:
- MFCD00043171
- MOL File:
- 1120-02-1.mol
- MSDS File:
- SDS
- TDS File:
- TDS
| Melting point | ~250 °C (dec.) (lit.) |
|---|---|
| Boiling point | 543.31℃[at 101 325 Pa] |
| vapor pressure | 0Pa at 25℃ |
| storage temp. | Inert atmosphere,Room Temperature |
| solubility | Limited solubility |
| form | powder to crystal |
| color | White to Almost white |
| Water Solubility | soluble |
| BRN | 3574090 |
| Stability | Stable. Hygroscopic. Incompatible with strong oxidizing agents. Protect from moisture. |
| Cosmetics Ingredients Functions |
HAIR CONDITIONING PRESERVATIVE ANTISTATIC |
| InChI | InChI=1S/C21H46N.BrH/c1-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19-20-21-22(2,3)4;/h5-21H2,1-4H3;1H/q+1;/p-1 |
| InChIKey | SZEMGTQCPRNXEG-UHFFFAOYSA-M |
| SMILES | C(CC[N+](C)(C)C)CCCCCCCCCCCCCCC.[Br-] |
| LogP | 3.06 at 25℃ |
| CAS DataBase Reference | 1120-02-1(CAS DataBase Reference) |
| EWG's Food Scores | 4 |
| FDA UNII | BPW1DD4IZ8 |
| EPA Substance Registry System | Trimethyl-1-octylammonium bromide (1120-02-1) |
| UNSPSC Code | 12352116 |
| NACRES | NA.22 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) | ![]() ![]() ![]() GHS05,GHS07,GHS09 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Danger | |||||||||
| Hazard statements | H302-H315-H317-H318-H410 | |||||||||
| Precautionary statements | P261-P264-P273-P280-P305+P351+P338+P310-P391 | |||||||||
| PPE | dust mask type N95 (US), Eyeshields, Gloves | |||||||||
| Hazard Codes | Xi | |||||||||
| Risk Statements | 36/37/38 | |||||||||
| Safety Statements | 26-36 | |||||||||
| RIDADR | UN 3077 9 / PGIII | |||||||||
| WGK Germany | 3 | |||||||||
| TSCA | TSCA listed | |||||||||
| HS Code | 29239000 | |||||||||
| Storage Class | 11 - Combustible Solids | |||||||||
| Hazard Classifications | Acute Tox. 4 Oral Aquatic Acute 1 Aquatic Chronic 1 Eye Dam. 1 Skin Irrit. 2 Skin Sens. 1 |
|||||||||
| REACH Registrations | Active | |||||||||
| NFPA 704 |
|
Octadecy trimethyl ammonium bromide price More Price(60)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | 359246 | Trimethyloctadecylammonium bromide 98% | 1120-02-1 | 10g | $124 | 2026-04-30 | Buy |
| Sigma-Aldrich | 359246 | Trimethyloctadecylammonium bromide 98% | 1120-02-1 | 50g | $341 | 2026-04-30 | Buy |
| TCI Chemical | S0364 | Trimethylstearylammonium Bromide >98.0%(T) | 1120-02-1 | 25g | $125 | 2026-04-30 | Buy |
| Usbiological | 256091 | OctMAB Asreported | 1120-02-1 | 10mg | $290 | 2026-06-03 | Buy |
| Usbiological | 241089 | Octadecyltrimethylammonium Bromide 99+% ≥99%(Titration) | 1120-02-1 | 10g | $134 | 2026-06-03 | Buy |
Octadecy trimethyl ammonium bromide Chemical Properties, Uses, Production
Chemical Properties
white powder
Uses
A Dynamin I inhibitor.
Uses
Trimethyloctadecylammonium bromide (C18TAB) is generally used as a surfactant. It can be used in the preparation of polyoxomolybdate-surfactant hybrid layered crystals. It can also be used as a surface modifier in the liquid chromatography.
Flammability and Explosibility
Not classified
Purification Methods
Crystallise it from EtOH or H2O (solubility is 1 in 1000parts). It is very soluble in Me2CO. It is a bactericide. [Sheldon et al. J Am Chem Soc 68 754 1946, Grieger & Kraus J Am Chem Soc 70 3805, 38007, Beilstein 4 IV 827.]
Octadecy trimethyl ammonium bromide Preparation Products And Raw materials
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Xiamen Pioneer Technology Co., Ltd | 0592-5625977 13850073005 | 13939264@qq.com | China | 50 | 64 |
| Jiangyin Baoyuan Chemical Co.,Ltd | 0510-86326538 13915249541 | 395368097@qq.com | China | 6 | 58 |
| Hangzhou Aiken New Materials Co., Ltd | 15258847994 | andriy@akkochemical.com | China | 242 | 58 |
| J & K SCIENTIFIC LTD. | 18210857532 18210857532 | jkinfo@jkchemical.com | China | 96815 | 76 |
| Meryer (Shanghai) Chemical Technology Co., Ltd. | 4006356688 18621169109 | market03@meryer.com | China | 40202 | 62 |
| future industrial shanghai co., ltd | 400-0066400 13621662912 | sales@jonln.com | China | 1989 | 65 |
| TCI (Shanghai) Development Co., Ltd. | 021-67121386 | Sales-CN@TCIchemicals.com | China | 24512 | 81 |
| Beijing HwrkChemical Technology Co., Ltd | 89508211 18501085097 | sales.bj@hwrkchemical.com | China | 9407 | 55 |
| Energy Chemical | 400-0056266 | sales8178@energy-chemical.com | China | 44850 | 61 |
| Shanghai Hanhong Scientific Co.,Ltd. | 021-54306202 13764082696 | info@hanhongsci.com | China | 42917 | 64 |
View Latest Price from Octadecy trimethyl ammonium bromide manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
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2026-09-18 | Octadecy trimethyl ammonium bromide
1120-02-1
|
1kg/Bag | ≥98% | 50 T/Month | Hebei Qujie Technology Co., Ltd. | ||
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2026-09-18 | Stearyltrimethylammonium bromide (STAB)
1120-02-1
|
$5.00 | 1kg | ≥99% | 5000mt/year | Jinan Finer Chemical Co., Ltd | |
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2026-08-12 | Octadecy trimethyl ammonium bromide
1120-02-1
|
$78.00 | 1KG | 98% | 1-10mt | Baoji Guokang Healthchem Co., Ltd. |
-

- Octadecy trimethyl ammonium bromide
1120-02-1
- $0.00
- ≥98%
- Hebei Qujie Technology Co., Ltd.
-

- Stearyltrimethylammonium bromide (STAB)
1120-02-1
- $5.00
- ≥99%
- Jinan Finer Chemical Co., Ltd
-

- Octadecy trimethyl ammonium bromide
1120-02-1
- $78.00
- 98%
- Baoji Guokang Healthchem Co., Ltd.







