Silicon powder, 99.95%
Silicon powder, 99.95% (CAS 7440-21-3) supplier Zemixal. Lab and bulk packs, batch COA, fast global delivery. Catalogue no. ZX-015261.
About Silicon powder, 99.95%
Silicon powder, 99.95% sits in our metal Powders section and ships worldwide from stock or short lead time. Key data (99.95%): CAS 7440-21-3, formula Si and molar mass 28.09 g/mol. Typical appearance is grey to dark grey powder.
Typical applications
- Powder metallurgy
- Additive manufacturing
- Chemical synthesis
- Organic synthesis
Storage and safety notes
Physical constants on file: melting point 1410 °C, boiling point 2355 °C and density 2.33 g/mL at 25 °C. It carries the GHS signal word Danger (H228 and H320), so wear gloves and eye protection and work with good ventilation. For transport it ships as UN UN 1346.
Order it in 10 g, 50 g, 1 kg and 4 x 25 kg packs or ask for a bulk quotation. Each lot travels with a batch certificate of analysis and a 16-section SDS. Send an enquiry through the quote panel and you get a formal offer with Incoterms and delivery time.
Typical uses
- Powder metallurgy
- Additive manufacturing
- Chemical synthesis
- Organic synthesis
Applications
Specifications and identifiers
| Product name | Silicon powder, 99.95% |
|---|---|
| Catalogue number | ZX-015261 |
| CAS number | 7440-21-3 |
| IUPAC name | silicon |
| Molecular formula | Si |
| Molar mass | 28.09 g/mol |
| Exact mass | 27.9769 |
| Purity / assay | 99.95% |
| 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 |
| Synonyms | Silicon high purity |
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 | |
| 50 g | Quoted on request | |
| 1 kg | Quoted on request | |
| 4 x 25 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, 99.95%
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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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