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730807

Silver, dispersion

nanoparticles, 40 nm particle size, 0.02 mg/mL in aqueous buffer, contains sodium citrate as stabilizer

Synonym(s):

Colloidal silver

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About This Item

Linear Formula:
Ag
CAS Number:
Molecular Weight:
107.87
NACRES:
NA.23
PubChem Substance ID:
UNSPSC Code:
12352302
MDL number:
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form

nanoparticles

Quality Segment

contains

sodium citrate as stabilizer

concentration

0.02 mg/mL in aqueous buffer

refractive index

n20/D 1.333

particle size

40 nm

density

0.990 g/mL at 25 °C

fluorescence

λem 412 nm FWHM 63 nm

storage temp.

2-8°C

SMILES string

[Ag]

InChI

1S/Ag

InChI key

BQCADISMDOOEFD-UHFFFAOYSA-N

General description

Our silver nanoparticles (40 nm in diameter) are spherical nanoparticles of metallic silver dispersed in an aqueous citrate buffer. This buffer stabilizes the dispersion; citrate ions adsorb onto the surface of the silver nanoparticles and create a protective layer that prevents aggregation. Because of the nanoparticles′ small size the nanoparticles exhibit quantum confined optical properties, most notably an emission wavelength of (λem) of412 nm with a full width at half maximum (FWHM) of only 63 nm, owing to the monodispersity of the particles. The optoelectronic properties in combination with a high surface area make our silver nanoparticles useful in biosensors and fluorescent imaging for the sensitive detection of biomolecules, pathogens, and environmental contaminants.

Application

  • Silver as acrolein hydrogenation catalyst: intricate effects of catalyst nature and reactant partial pressures.: This study explores the use of silver as a catalyst for acrolein hydrogenation, highlighting the complex effects of catalyst nature and the partial pressures of reactants, which could inform future applications in industrial chemical processes (Bron et al., 2007).
  • Surface-enhanced Raman analysis of sulfa drugs on colloidal silver dispersion.: This research discusses the application of surface-enhanced Raman spectroscopy (SERS) using colloidal silver dispersions for analyzing sulfa drugs, potentially enhancing detection methods in pharmaceutical research (Sutherland et al., 1990).

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730777736511736465
description

nanoparticles, 40 nm particle size, 0.02 mg/mL in aqueous buffer, contains sodium citrate as stabilizer

description

nanoparticles, 100 nm particle size, 0.02 mg/mL in aqueous buffer, contains sodium citrate as stabilizer

description

nanoparticle, for printing on ITO and glass

description

nanoparticle, 30-35 wt. % in triethylene glycol monoethyl ether, spec. resistivity 11 μΩ-cm, for printing on plastic films

particle size

40 nm

particle size

100 nm

particle size

≤10 nm

particle size

30-50 nm

form

nanoparticles

form

nanoparticles

form

dispersion, nanoparticle

form

dispersion, nanoparticle

density

0.990 g/mL at 25 °C

density

0.9978 g/mL at 25 °C

density

1.5-1.8 g/mL at 25 °C

density

1.45 g/mL±0.05 g/mL at 25 °C

Quality Level

100

Quality Level

100

Quality Level

200

Quality Level

200

storage temp.

2-8°C

storage temp.

2-8°C

storage temp.

20-25°C

storage temp.

2-8°C

refractive index

n20/D 1.333

refractive index

n20/D 1.333

refractive index

n20/D 1.333

refractive index

n20/D 1.333


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pictograms

Environment

signalword

Warning

hcodes

Hazard Classifications

Aquatic Acute 1 - Aquatic Chronic 1

Storage Class

12 - Non Combustible Liquids

flash_point_f

Not applicable

flash_point_c

Not applicable



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Questions

  1. Hello, excuse me, could you give me the data on the concentration of the number of silver nanoparticles per milliliter?

    1 answer
    1. One milliliter of dispersion contains 0.02g of silver nanoparticles as listed in the "Properties" section.

      Helpful?

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