If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf
730785
Silver, dispersion
nanoparticles, 10 nm particle size, 0.02 mg/mL in aqueous buffer, contains sodium citrate as stabilizer
Synonym(s):
Colloidal silver
Select a Size
| Size/SKU | Availability | Price |
|---|
About This Item
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
10 nm
density
0.997 g/mL at 25 °C
fluorescence
λem 388 nm FWHM 59 nm
storage temp.
2-8°C
SMILES string
[Ag]
InChI
1S/Ag
InChI key
BQCADISMDOOEFD-UHFFFAOYSA-N
General description
Application
1 of 1
This Item | |||
|---|---|---|---|
| description nanoparticles, 10 nm particle size, 0.02 mg/mL in aqueous buffer, contains sodium citrate as stabilizer | description nanoparticles, 40 nm particle size, 0.02 mg/mL in aqueous buffer, contains sodium citrate as stabilizer | description nanoparticle, 30-35 wt. % in triethylene glycol monoethyl ether, spec. resistivity ~ 7 μΩ-cm, for printing on ITO films | description nanoparticle, 30-35 wt. % in triethylene glycol monoethyl ether, spec. resistivity 11 μΩ-cm, for printing on plastic films |
| particle size 10 nm | particle size 40 nm | particle size ≤50 nm | particle size 30-50 nm |
| form nanoparticles | form nanoparticles | form dispersion, nanoparticle | form nanoparticle, dispersion |
| storage temp. 2-8°C | storage temp. 2-8°C | storage temp. 2-8°C | storage temp. 2-8°C |
| contains sodium citrate as stabilizer | contains sodium citrate as stabilizer | contains - | contains - |
| concentration 0.02 mg/mL in aqueous buffer | concentration 0.02 mg/mL in aqueous buffer | concentration 30-35 wt. % in triethylene glycol monoethyl ether | concentration 30-35 wt. % in triethylene glycol monoethyl ether |
| Quality Level 100 | Quality Level 100 | Quality Level 200 | Quality Level 200 |
Still not finding the right product?
Explore all of our products under Silver, dispersion
Signal Word
Warning
Hazard Codes
Precautionary Statements
Hazard Classifications
Aquatic Acute 1 - Aquatic Chronic 1
Storage Class
12 - Non Combustible Liquids
Flash Point (°F)
Not applicable
Flash Point (°C)
Not applicable
Choose from one of the most recent versions:
Already Own This Product?
Find documentation for the products that you have recently purchased in the Document Library.
-
How can I determine the shelf life / expiration / retest date of this product?
1 answer-
Helpful?
-
-
How is shipping temperature determined? And how is it related to the product storage temperature?
1 answer-
Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf
Helpful?
-
-
it can able to scatter light when it absorbs particular wavelength of light?
1 answer-
Yes, this item is a silver dispersion. Silver nanoparticles do scatter light. The product specification range is 380-405 nm. As reported in the Properties section, the fluorescence λem is 388 nm with the FWHM at 59 nm and a refractive index of n20/D 1.333.
Helpful?
-
-
Hi, I see that this silver colloidal is water based, but I could not find the information of which materials it is soluble. For example, is it soluble in chloroform or DMSO?
1 answer-
The product is a dispersion of silver nanoparticles in an aqueous buffer. Aqueous dispersants appear to be the the standard format. Please check the literature for further diluting in organic solvents or DMSO:
https://www.sigmaaldrich.com/search/730785?focus=papers&page=1&perpage=30&sort=relevance&term=730785&type=citation_search
https://www.sigmaaldrich.com/search/730785aldrich?facet=facet_content_type%3ATechnical%20Article&focus=sitecontent&page=1&perpage=30&sort=relevance&term=730785aldrich&type=site_contentHelpful?
-
-
sulla descrizione del prodotto è indicato che sono sospese in buffer acquoso. Di quale buffer si tratta? e a che pH sono? grazie
1 answer-
The buffer used for product 730785 is a 2mM sodium citrate buffer. The pH of the solution is 6.9.
Helpful?
-