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294136

Sigma-Aldrich

Tetraoctylammonium bromide

98%

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Synonym(s):
TOAB
Linear Formula:
[CH3(CH2)7]4N(Br)
CAS Number:
Molecular Weight:
546.79
Beilstein/REAXYS Number:
4169176
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.22

Quality Level

assay

98%

form

solid

mp

95-98 °C (lit.)

SMILES string

[Br-].CCCCCCCC[N+](CCCCCCCC)(CCCCCCCC)CCCCCCCC

InChI

1S/C32H68N.BrH/c1-5-9-13-17-21-25-29-33(30-26-22-18-14-10-6-2,31-27-23-19-15-11-7-3)32-28-24-20-16-12-8-4;/h5-32H2,1-4H3;1H/q+1;/p-1

InChI key

QBVXKDJEZKEASM-UHFFFAOYSA-M

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1 of 4

This Item
426288140023241059
vibrant-m

294136

Tetraoctylammonium bromide

vibrant-m

426288

Tetrabutylammonium bromide

vibrant-m

140023

Tetraethylammonium bromide

vibrant-m

241059

Tetraethylammonium bromide

form

solid

form

solid

form

crystalline

form

crystals

Quality Level

200

Quality Level

200

Quality Level

200

Quality Level

200

mp

95-98 °C (lit.)

mp

102-106 °C (lit.)

mp

285 °C (dec.) (lit.)

mp

285 °C (dec.) (lit.)

General description

Tetraoctylammonium bromide is an organic surface coating agent commonly used to control the size and shape during nanoparticle synthesis.

Application

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.

pictograms

Corrosion

signalword

Danger

Hazard Classifications

Eye Dam. 1 - Skin Irrit. 2

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

213.8 °F - closed cup

flash_point_c

101 °C - closed cup

ppe

dust mask type N95 (US), Eyeshields, Gloves


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