Merck
CN
All Photos(1)

Documents

294136

Sigma-Aldrich

Tetraoctylammonium bromide

98%

Sign Into View Organizational & Contract Pricing
All Photos(1)
Synonym(s):
TOAB
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
PubChem Substance ID:
24857704
NACRES:
NA.22

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

Looking for similar products? Visit Product Comparison Guide

Related Categories

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
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

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Documents related to the products that you have purchased in the past have been gathered in the Document Library for your convenience.

Visit the Document Library

Difficulty Finding Your Product Or Lot/Batch Number?

Product numbers are combined with Pack Sizes/Quantity when displayed on the website (example: T1503-25G). Please make sure you enter ONLY the product number in the Product Number field (example: T1503).

Example:

T1503
Product Number
-
25G
Pack Size/Quantity

Additional examples:

705578-5MG-PW

PL860-CGA/SHF-1EA

MMYOMAG-74K-13

1000309185

enter as 1.000309185)

Having trouble? Feel free to contact Technical Service for assistance.

Lot and Batch Numbers can be found on a product's label following the words 'Lot' or 'Batch'.

Aldrich Products

  • For a lot number such as TO09019TO, enter it as 09019TO (without the first two letters 'TO').

  • For a lot number with a filling-code such as 05427ES-021, enter it as 05427ES (without the filling-code '-021').

  • For a lot number with a filling-code such as STBB0728K9, enter it as STBB0728 without the filling-code 'K9'.

Not Finding What You Are Looking For?

In some cases, a COA may not be available online. If your search was unable to find the COA you can request one.

Request COA

Integration of Organic Fluorophores in the Surface of Polymer?Coated Colloidal Nanoparticles for Sensing the Local Polarity of the Environment.
Amin F, et al.
ChemPhysChem, 13(4), 1030-1035 (2012)
Surface binding properties of tetraoctylammonium bromide-capped gold nanoparticles.
Thomas K G, et al.
Langmuir, 18(9), 3722-3727 (2002)
Ying Zhang et al.
Toxicology in vitro : an international journal published in association with BIBRA, 29(4), 762-768 (2015-03-10)
Impact on health by nanomaterials has become a public concern with the great advances of nanomaterials for various applications. Surface coating agents are an integral part of nanoparticles, but not enough attention has been paid during toxicity tests of nanoparticles.
Motao Zhu et al.
ACS nano, 14(3), 3703-3717 (2020-02-15)
Engineered nanoparticles could trigger inflammatory responses and potentiate a desired innate immune response for efficient immunotherapy. Here we report size-dependent activation of innate immune signaling pathways by gold (Au) nanoparticles. The ultrasmall-size (<10 nm) Au nanoparticles preferentially activate the NLRP3
Shubo Tian et al.
Nature communications, 6, 8667-8667 (2015-10-21)
Revealing structural isomerism in nanoparticles using single-crystal X-ray crystallography remains a largely unresolved task, although it has been theoretically predicted with some experimental clues. Here we report a pair of structural isomers, Au38T and Au38Q, as evidenced using electrospray ionization
View All Related Papers

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service