Hexadecyltrimethylammonium hydroxide
Synonym(s):Cetrimonium hydroxide solution;Cetyltrimethylammonium hydroxide;CTAOH solution
- CAS NO.：505-86-2
- Empirical Formula: C19H43NO
- Molecular Weight: 301.56
- MDL number: MFCD00041921
- EINECS: 208-022-4
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-01-13 11:25:01
What is Hexadecyltrimethylammonium hydroxide?
Chemical properties
clear colorless to pale yellow solution
The Uses of Hexadecyltrimethylammonium hydroxide
Hexadecyltrimethylammonium hydroxide solution is a surfactant used in:
- Synthesis of microporous and mesoporous aluminosilicate molecular sieves such as MCM-41 and MCM-48.
- Hydrothermal preparation of manganese dioxide (MnO2) nanoflower.
- Synthesis of cetyltrimethylammonium hydroperoxide, a reagent used for promoting phosphate ester hydrolysis.
The Uses of Hexadecyltrimethylammonium hydroxide
Hexadecyltrimethylammonium hydroxide solution is a commonly used phase transfer agent and surfactant solution employed in the synthesis of a variety of mesoporous materials, micelle complexes and transition-metal oxides.
Properties of Hexadecyltrimethylammonium hydroxide
| Density | 0.988 g/mL at 25 °C |
| refractive index | n |
| Flash point: | 11 °C |
| storage temp. | 2-8°C |
| Water Solubility | Soluble in water |
| form | Solution |
| color | Clear colorless to pale yellow |
| BRN | 3723055 |
| CAS DataBase Reference | 505-86-2(CAS DataBase Reference) |
| EPA Substance Registry System | 1-Hexadecanaminium, N,N,N-trimethyl-, hydroxide (505-86-2) |
Safety information for Hexadecyltrimethylammonium hydroxide
| Signal word | Danger |
| Pictogram(s) |
 Flame Flammables GHS02  Corrosion Corrosives GHS05  Skull and Crossbones Acute Toxicity GHS06  Health Hazard GHS08 |
| GHS Hazard Statements |
H225:Flammable liquids H314:Skin corrosion/irritation H370:Specific target organ toxicity, single exposure |
| Precautionary Statement Codes |
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P280:Wear protective gloves/protective clothing/eye protection/face protection. P301+P330+P331:IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. |
Computed Descriptors for Hexadecyltrimethylammonium hydroxide
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