Molekula
Silver nanoparticles, 40nm, 0.02 mg/ml, supplied in 2mM sodium citrate, 416nm absorption
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Silver nanoparticles (Ag) are ultra-fine metallic particles, typically 40 nanometers in size, widely used in antimicrobial coatings, biosensors, and medical diagnostics for their unique optical and bactericidal properties. This product features a stable colloidal suspension at 0.02 mg/ml in 2 mM sodium citrate, with a characteristic surface plasmon resonance peak at 416 nm. CAS 7440-22-4, molecular weight 107.87 g/mol, stored at ambient conditions. Hazard classification: Danger (signal word). Molekula supplies silver nanoparticles from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
Specifications available on request — see Documents below or contact our sales team.
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 9 |
| Packing Group | III |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | White metal, face-centered cubic structure |
| Melting Point | 962 °C |
| Boiling Point | 2212 °C |
| Density | 10.5 (relative, water = 1) |
| Vapour Pressure | 0 mmHg (approx) |
Source: PubChem CID 23954 (HSDB, ICSC, The National Institute for Occupational Safety and Health (NIOSH))
Identification
| Property | Value |
|---|---|
| SKU | 90037315 |
| CAS Number | 7440-22-4 |
| IUPAC Name | silver |
| EC Number | 231-131-3 |
| Molecular Formula | Ag |
| Molecular Weight | 107.87 |
| Exact Mass | 106.9051 |
| SMILES | [Ag] |
| InChIKey | BQCADISMDOOEFD-UHFFFAOYSA-N |
| InChI | InChI=1S/Ag |
| PubChem CID | 23954 |
| UN Number | UN3077 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 32073000 |
| Tariff Code | 3207300030 |
Safety & GHS
-
Serious Health Hazard
GHS08
-
Hazardous to the Environment
GHS09
Hazard statements
- EUH381 Suspected of causing endocrine disruption in humans
- H360 May damage fertility or the unborn child
- H373 May cause damage to organs through prolonged or repeated exposure
- H400 Very toxic to aquatic life
- H410 Very toxic to aquatic life with long lasting effects
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P264 Wash thoroughly after handling
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P308+313 IF exposed or concerned: Get medical advice/attention
Documents
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- Algaedyn
- Argentum
- Astroflake 5
- Colloidal silver
- Shell silver
- Silber
- SILVER
- Silver atom
- Silver metal
- Silver, colloidal
Frequently asked questions
What are silver nanoparticles (40nm, 0.02 mg/ml) used for?
These nanoparticles are commonly used in antimicrobial coatings, biosensors, catalysis, and biomedical research, including drug delivery and diagnostics.
What is the chemical formula and molecular weight of silver nanoparticles?
The chemical formula is **Ag** (elemental silver), with a molecular weight of **107.87 g/mol** per atom.
How should silver nanoparticles be stored?
Store at **ambient temperature** in a tightly sealed container, protected from light and contamination.
What grade or purity is available for this product?
This product is supplied as a **nanoparticle dispersion** with a nominal purity of **≥99.5% metallic silver** (trace citrate stabilizer present).
Can Molekula supply silver nanoparticles in bulk quantities?
Yes, we can accommodate bulk orders—please contact us for pricing, lead times, and customization options.
What documentation comes with the order of silver nanoparticles?
Each order includes a **Certificate of Analysis (CoA)**, Material Safety Data Sheet (MSDS), and batch-specific spectral data (e.g., UV-Vis absorption at 416nm).
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.