Tetraoctylammonium bromide
Synonym(s):Tetra-n-octylammonium bromide;TOAB
- CAS NO.：14866-33-2
- Empirical Formula: C32H68BrN
- Molecular Weight: 546.79
- MDL number: MFCD00011863
- EINECS: 238-936-9
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-08-21 22:41:43
What is Tetraoctylammonium bromide?
Chemical properties
white crystalline powder
The Uses of Tetraoctylammonium bromide
Tetraoctylammonium bromide (TOAB) has been used as a phase transfer agent to transfer gold tetrachloroaurate from aqueous phase to organic phase in a two-phase (organic-aqueous) method of alkanethiol stabilized gold nanoparticle synthesis. It is also used to prepare TOAB-capped gold nanoparticles, which shows well-defined plasmon absorption compared to thiol-capped nanoparticles.
The Uses of Tetraoctylammonium bromide
TOAB has been used as recognition element in formulating potentiometric membrane to develop an electronic tongue system for monitoring nitrogen species level in water samples.
What are the applications of Application
Tetraoctylammonium bromide is a phase transfer catalyst
General Description
Tetraoctylammonium bromide is an organic surface coating agent commonly used to control the size and shape during nanoparticle synthesis.
Flammability and Explosibility
Not classified
Properties of Tetraoctylammonium bromide
| Melting point: | 95-98 °C(lit.) |
| Boiling point: | 209.3℃[at 101 325 Pa] |
| Density | 1.0041 (rough estimate) |
| vapor pressure | 0Pa at 25℃ |
| refractive index | 1.5260 (estimate) |
| Flash point: | 100°C |
| storage temp. | Store below +30°C. |
| solubility | 600g/l |
| form | Powder or Flakes |
| color | White to creamy-white |
| PH | 7 (100g/l, H2O, 20℃) |
| Water Solubility | soluble |
| Sensitive | Hygroscopic |
| λmax | λ: 240 nm Amax: 0.04 λ: 250 nm Amax: 0.03 λ: 260 nm Amax: 0.02 λ: 500 nm Amax: 0.02 |
| BRN | 4169176 |
| Stability: | Stable. Incompatible with strong oxidizing agents. |
| CAS DataBase Reference | 14866-33-2(CAS DataBase Reference) |
Safety information for Tetraoctylammonium bromide
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
| Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P304+P340:IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P405:Store locked up. |
Computed Descriptors for Tetraoctylammonium bromide
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