Silver, dispersion
ALDRICH/730793 - nanoparticles, 20 nm particle size (TEM), 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
TEM of 20 nm silver nanoparticles. Representative TEM, batch-to-batch variation may be expected.
Representative spectra of silver nanoparticle dispersion, 10–200 nm.
20 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: 730793-25ML
| concentration | 0.02 mg/mL in aqueous buffer |
| contains | sodium citrate as stabilizer |
| density | 0.986 g/mL at 25 °C |
| fluorescence | λem 401 nm FWHM 66 nm |
| form | nanoparticles |
| InChI | 1S/Ag |
| InChI key | BQCADISMDOOEFD-UHFFFAOYSA |
| particle size | 20 nm (TEM) |
| refractive index | n |
| SMILES string | [Ag] |
| storage temp. | 2-8°C |
| Application: |
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| General description: | Our 20 nm silver nanoparticles are ideal for biosensing and fluorescent imaging applications.These spherical particles are stabilized in an aqueous citrate buffer to prevent aggregation. Silver nanoparticles efficiently absorb and scatter light due to the conduction electrons on their surface undergoing collective oscillations, known as surface plasmon resonance (SPR), when excited by specific wavelengths. Unlike gold nanoparticles, which absorb at longerwavelengths (500+ nm), silver nanoparticles absorb at shorter wavelengths(400-450 nm). At a 20 nm size, our nanoparticles have a peak absorptionwavelength (λ) of 400 nm and a narrow full width at half maximum (FWHM) of 66nm, thanks to their high monodispersity. These optoelectronic properties, combined with their high surface area, make them effective for detecting 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 | 0.986 g/mL at 25 °C |
| Refractive Index | n |
| Storage Temp. | 2-8°C |
| UNSPSC | 12352302 |