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294136

Sigma-Aldrich

Tetraoctylammonium bromide

98%

Synonym(s):

TOAB

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50 G
₩1,99,245
250 G
₩9,46,082

About This Item

Linear Formula:
[CH3(CH2)7]4N(Br)
CAS Number:
14866-33-2
Molecular Weight:
546.79
Beilstein:
4169176
EC Number:
238-936-9
MDL number:
MFCD00011863
UNSPSC Code:
12352107
PubChem Substance ID:
24857704
NACRES:
NA.22

₩1,99,245

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Quality Level

200

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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Show Differences

1 of 4

This Item
1.090811.0908085193
Silver nitrate on silica gel extent of labeling: ~10 wt. % loading, +230 mesh

248762

Silver nitrate on silica gel

Silver nitrate solution c(AgNO3) = 0.1 mol/l (0.1 N), Titripur®, reag. Ph. Eur., reag. USP

1.09081

Silver nitrate solution

Silver nitrate solution c(AgNO3) = 1 mol/l (1 N), Titripur®

1.09080

Silver nitrate solution

Silver nitrate solution 2.5 % (w/v) AgNO3 in H2O

85193

Silver nitrate solution

reaction suitability

core: silver, reagent type: catalyst

reaction suitability

-

reaction suitability

-

reaction suitability

-

functional group

nitrate

functional group

-

functional group

-

functional group

-

form

solid

form

liquid

form

liquid

form

liquid

Quality Level

100

Quality Level

200

Quality Level

200

Quality Level

100

density

4.35 g/mL at 25 °C (lit.)

density

1.01 g/cm3 at 20 °C

density

1.14 g/cm3 at 20 °C

density

-

extent of labeling

~10 wt. % loading

extent of labeling

-

extent of labeling

-

extent of labeling

-

General description

Tetraoctylammonium bromide is an organic surface coating agent commonly used to control the size and shape during nanoparticle synthesis.[1]

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.[2] It is also used to prepare TOAB-capped gold nanoparticles, which shows well-defined plasmon absorption compared to thiol-capped nanoparticles.[3]

Pictograms

Corrosion
GHS05

Signal Word

Danger

Hazard Statements

H315,H318

Hazard Classifications

Eye Dam. 1 - Skin Irrit. 2

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

213.8 °F - closed cup

Flash Point(C)

101 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves
  • Specification Sheet

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    Certificates of Analysis (COA)

    Lot/Batch Number
    BCCG0539
    BCCC8078
    BCBW9358
    BCBP8933V
    BCBS6641V

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