Silver, dispersion

ALDRICH/730807 - nanoparticles, 40 nm particle size, 0.02 mg/mL in aqueous buffer, contains sodium citrate as stabilizer

Synonym: Colloidal silver

CAS Number: 7440-22-4
Empirical Formula (Hill Notation): Ag
Molecular Weight: 107.87
MDL Number: MFCD00003397
Linear Formula: Ag
Product Type: Chemical

Catalog Number	PKG Qty.	Price


45-730807-25ML	25 mL	$182.00 1/EA	Add To Favorites
45-730807-250ML		$395.00 1/EA	Add To Favorites

TEM of 40 nm silver nanoparticles. Representative TEM, batch-to-batch variation may be expected.

Representative spectra of silver nanoparticle dispersion, 10–200 nm.

40 nm Silver nanoparticles, 0.02 mg/mL concentration

This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: 730807-25ML

Properties
Descriptions
Safety Info.
Basic Data

concentration	0.02 mg/mL in aqueous buffer
contains	sodium citrate as stabilizer
density	0.990 g/mL at 25 °C
fluorescence	λ_em 412 nm FWHM 63 nm
form	nanoparticles
InChI	1S/Ag
InChI key	BQCADISMDOOEFD-UHFFFAOYSA-N
particle size	40 nm
Quality Level	100
refractive index	n20/D 1.333
SMILES string	[Ag]
storage temp.	2-8°C

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 ).
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.
Packaging:	25 mL in glass bottle

Symbol	GHS09
Hazard statements	H411
Precautionary statements	P273
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point(F)	Not applicable
Flash Point(C)	Not applicable

Density	0.990 g/mL at 25 °C
Refractive Index	n20/D 1.333
Storage Temp.	2-8°C
UNSPSC	12352302

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