Silicon powder, <40 μm, 99.9%
Order Silicon powder, <40 μm, 99.9% (CAS 7440-21-3) online at Zemixal: Si, COA and SDS with every lot, worldwide shipping.
About Silicon powder, <40 μm, 99.9%
Silicon powder, <40 μm, 99.9% sits in our metal Powders section and ships worldwide from stock or short lead time. Key data (99.9%): CAS 7440-21-3, formula Si and molar mass 28.09 g/mol. It is described as grey to dark grey powder.
Common uses in the lab and plant
- Powder metallurgy
- Additive manufacturing
- Chemical synthesis
- Organic synthesis
Handling and storage
Reported physical data: boiling point 2355 °C and density 2.33 g/mL at 25 °C. Classified under GHS with signal word Danger and hazard statements H228 and H320. Read the SDS before first use. For transport it ships as UN UN 1346.
Available as 10 g, 100 g, 500 g and 5 x 1 kg. Larger or split packs can be arranged. Each lot travels with a batch certificate of analysis and a 16-section SDS. Request pricing online and we confirm availability, documentation and freight to your country.
Typical uses
- Powder metallurgy
- Additive manufacturing
- Chemical synthesis
- Organic synthesis
Applications
Specifications and identifiers
| Product name | Silicon powder, <40 μm, 99.9% |
|---|---|
| Catalogue number | ZX-015262 |
| CAS number | 7440-21-3 |
| IUPAC name | silicon |
| Molecular formula | Si |
| Molar mass | 28.09 g/mol |
| Exact mass | 27.9769 |
| Purity / assay | 99.9% |
| Physical form | Powder |
| Appearance | Grey to dark grey powder |
| Boiling point | 2355 °C |
| Density | 2.33 g/mL at 25 °C |
| H-bond donors / acceptors | 0 / 0 |
| Topological polar surface area | 0 Ų |
| HS code | 28046900 |
| UN number | UN 1346 |
| InChIKey | XUIMIQQOPSSXEZ-UHFFFAOYSA-N |
| SMILES | [Si] |
| PubChem CID | 5461123 |
Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.
Safety and GHS hazards
Signal word Danger
- H228Flammable solid
- H320Causes eye irritation
Precautionary statements P210, P240, P241, P264 + P265, P280, P305 + P351 + P338, P337 + P317, P370 + P378
Classification summarised from public GHS notifications. It can vary with grade and concentration, so always follow the SDS supplied with your lot.
Pack sizes
| 10 g | Quoted on request | |
| 100 g | Quoted on request | |
| 500 g | Quoted on request | |
| 5 x 1 kg | Quoted on request |
Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.
Questions about Silicon powder, <40 μm, 99.9%
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Other grades with CAS 7440-21-3
All 21 grades- CAS
- 7440-21-3
- Formula
- Si
- MW
- 28.09 g/mol
- CAS
- 7440-21-3
- Formula
- Si
- MW
- 28.09 g/mol
- CAS
- 7440-21-3
- Formula
- Si
- MW
- 28.09 g/mol
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