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576832

Sigma-Aldrich

Silver

nanopowder, <100 nm particle size, contains PVP as dispersant, 99.5% trace metals basis

Sinónimos:

Colloidal nano silver, Colloidal silver, Nanosilver

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About This Item

Fórmula lineal:
Ag
Número de CAS:
7440-22-4
Peso molecular:
107.87
EC Number:
231-131-3
MDL number:
MFCD00003397
UNSPSC Code:
12141740
PubChem Substance ID:
24880887
NACRES:
NA.23

Quality Level

200

assay

99.5% trace metals basis

form

nanopowder

contains

PVP as dispersant

resistivity

1.59 μΩ-cm, 20°C

surface area

5.0 m2/g

particle size

<100 nm

bp

2212 °C (lit.)

mp

960 °C (lit.)

density

10.49 g/cm3 (lit.)

SMILES string

[Ag]

InChI

1S/Ag

InChI key

BQCADISMDOOEFD-UHFFFAOYSA-N

General description

This silver nanopowder consists of metallic silver nanoparticles with a diameter less than 100 nm. These nanosilver particles are coated with polyvinylpyrrolidone (PVP) at a concentration of 0.2% by mass. This coating effectively limits surface oxidation and enhances the dispersion of the powder in various solvents.

Silver nanopowder is extensively utilized in medicinal applications and medical devices. The increased surface area to volume ratio and heightened reactivity of nanosilver make it particularly valuable in modern biomedical applications, particularly in coatings of medical devices.

Application

Water based ink was formulated with the silver nanowires. Silver nanoparticles, leading to higher amounts of elutable substances has been studied. The immunological adjuvant effect of silver nanoparticles (AgNPs) was investigated both in vitro and in vivo.  Silver nanoparticles based graphite epoxy nanocomposites have been fabricated. Action of AgNPs in enhanced thrombus formation as a consequence of increased platelet aggregation and procoagulant activity has been investigated. Optical fiber sensor photodeposited with AgNPs have been fabricated. PAN fiber based nanocomposites containing Ag and Hydroxyapatite as nanoadditives have been reported.

pictograms

Environment
GHS09

signalword

Warning

hcodes

H410

Hazard Classifications

Aquatic Acute 1 - Aquatic Chronic 1

Storage Class

13 - Non Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

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Yingying Xu et al.
Toxicology letters, 219(1), 42-48 (2013-03-05)
The immunological adjuvant effect of silver nanoparticles (AgNPs) was investigated both in vitro and in vivo. The in vivo adjuvant effect of AgNPs was evaluated with model antigen ovalbumin (OVA) and bovine serum albumin (BSA) in mice by intraperitoneal and
Silver nanocomposite electrode modified with hexacyanoferrate. Preparation, characterization and electrochemical behaviour towards substituted anilines
Fenga PG, et al.
Electroanalysis, 23(5), 1100-1106 (2011)
Silver nanoparticles toxicity and bactericidal effect against methicillin-resistant Staphylococcus aureus: nanoscale does matter
Ayala-Nu?ez et al.
NanoBiotechnology, 5(1-4), 2-9 (2009)
Eun-Ah Jun et al.
Nanotoxicology, 5(2), 157-167 (2010-09-09)
Despite the wide use of silver nanoparticles (nano Ag), its toxicity still remains poorly understood. In this report, nano Ag induced an increase in platelet aggregation and procoagulant activation which are the key contributors to thrombotic diseases. In freshly isolated
Antibacterial Properties of Silver-Finished Textiles
Matyjas-Zgondek E, et al.
Fibres and Textiles in Eastern Europe, 16(5), 101-107 (2008)
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