Silicon powder, crystalline, -325 mesh, 99.5%
Silicon powder, crystalline, -325 mesh, 99.5% (CAS 7440-21-3) supplier Zemixal. Lab and bulk packs, batch COA, fast global delivery.
About Silicon powder, crystalline, -325 mesh, 99.5%
Silicon powder, crystalline, -325 mesh, 99.5% is part of the Zemixal metal Powders range. Key data (99.5%): CAS 7440-21-3, formula Si and molar mass 28.09 g/mol. Expect grey to dark grey powder.
Common uses in the lab and plant
- Powder metallurgy
- Additive manufacturing
- Chemical synthesis
- Organic synthesis
Handling and storage
Physical constants on file: melting point 1410 °C, 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.
Standard pack sizes are 10 g, 100 g, 500 g and 5 x 1 kg, and custom quantities are quoted on request. Every shipment includes a batch certificate of analysis and a 16-section SDS. Add it to your quote list and our team replies with price, lead time and shipping options within one business day.
Typical uses
- Powder metallurgy
- Additive manufacturing
- Chemical synthesis
- Organic synthesis
Applications
Specifications and identifiers
| Product name | Silicon powder, crystalline, -325 mesh, 99.5% |
|---|---|
| Catalogue number | ZX-015263 |
| CAS number | 7440-21-3 |
| IUPAC name | silicon |
| Molecular formula | Si |
| Molar mass | 28.09 g/mol |
| Exact mass | 27.9769 |
| Purity / assay | 99.5% |
| Physical form | Powder |
| Appearance | Grey to dark grey powder |
| Melting point | 1410 °C |
| 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, crystalline, -325 mesh, 99.5%
Which CAS number identifies Silicon powder, crystalline, -325 mesh, 99.5%?
What are the formula and molar mass of Silicon powder, crystalline, -325 mesh, 99.5%?
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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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