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Sigma-Aldrich

Gold

nanopowder, <100 nm particle size, 99.9% trace metals basis

Synonym(s):

Gold element

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About This Item

Empirical Formula (Hill Notation):
Au
CAS Number:
7440-57-5
Molecular Weight:
196.97
EC Number:
231-165-9
MDL number:
MFCD00003436
UNSPSC Code:
12352302
PubChem Substance ID:
24882773
NACRES:
NA.23

Assay

99.9% trace metals basis

form

nanopowder

resistivity

2.05 μΩ-cm, 0°C

particle size

<100 nm

bp

2808 °C (lit.)

mp

1063 °C (lit.)

density

19.3 g/mL at 25 °C (lit.)

SMILES string

[Au]

InChI

1S/Au

InChI key

PCHJSUWPFVWCPO-UHFFFAOYSA-N

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General description

Gold nanoparticles are extensively used as preferred materials for labeling, imaging, sensing, and biomedical applications due to their following unique properties:
  • Ease of synthetic manipulation
  • Strong binding affinity to thiols, disulfides, and amines
  • Unique tunable optical and distinct electronic properties
  • High X-ray absorption coefficient

Application

Gold nanoparticles can be used:
  • As a catalyst in the preparation of single-walled carbon nanotubes by a chemical vapor deposition method.
  • In the preparation of conducting polymer matrix AuNPs/PEDOT: PSS(poly(3,4-ethylenedioxythiophene) polystyrene sulfonate), which is applicable in fuel cell electrocatalysis.
  • To prepare fluorescent nanocomposites for targeted bioimaging.
  • As carriers of signaling antibody in developing optical ELISA for analysis of breast cancer biomarker.

Storage Class Code

13 - Non Combustible Solids

WGK

nwg

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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’.

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CVD synthesis of single-walled carbon nanotubes from gold nanoparticle catalysts.
Sreekar Bhaviripudi et al.
Journal of the American Chemical Society, 129(6), 1516-1517 (2007-02-08)
Adriano Ambrosi et al.
Analytical chemistry, 82(3), 1151-1156 (2010-01-02)
In this work, we developed an optical enzyme-linked immunosorbent assay (ELISA) immunoassay for the analysis of CA15-3 antigen, an important biomarker present in blood samples and useful for the follow-up of the medical treatment of breast cancer. Gold nanoparticles (AuNPs)
Ri-Chao Zhang et al.
Scientific reports, 7, 46682-46682 (2017-04-25)
Conductive polymers have been increasingly used as fuel cell catalyst support due to their electrical conductivity, large surface areas and stability. The incorporation of metal nanoparticles into a polymer matrix can effectively increase the specific surface area of these materials
Cury, L.A. et al.
Synthetic Metals, 139, 283-283 (2003)
Wenyao Lin et al.
Virology journal, 8, 273-273 (2011-06-07)
Avian influenza viruses of H9N2 subtype have become highly prevalent in avian species. Although these viruses generally cause only mild to moderate disease, they can infect a wide variety of species, including chickens, quail, turkeys, ducks, geese, pheasant, partridge, and
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