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Metal Powders

Silicon powder, -325 mesh, 99.9%

Available on request

Order Silicon powder, -325 mesh, 99.9% (CAS 7440-21-3) online at Zemixal: Si, COA and SDS with every lot, worldwide shipping.

Pack sizes
Silicon powder, -325 mesh, 99.9% chemical structure
CAS number7440-21-3
FormulaSi
Molar mass28.09 g/mol
Physical formPowder
HS code28046900
UN numberUN 1346
Purity99.9%
InChIKeyXUIMIQQOPSSXEZ-UHFFFAOYSA-N
IUPAC namesilicon

About Silicon powder, -325 mesh, 99.9%

Zemixal supplies Silicon powder, -325 mesh, 99.9% within its inorganic Chemicals, Metals & Advanced Materials portfolio. Identity at a glance (99.9%): 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

Handling and storage

Literature values: melting point 1410 °C, boiling point 2355 °C and density 2.33 g/mL at 25 °C. Hazard communication follows GHS (Danger: H228 and H320). Our SDS lists exposure controls and first-aid measures. For transport it ships as UN UN 1346.

Available as 100 g, 500 g, 1 kg and 4 x 25 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

Mining, Mineral Processing and MetallurgyResearch Labs and Universities

Specifications and identifiers

Specifications of Silicon powder, -325 mesh, 99.9%
Product nameSilicon powder, -325 mesh, 99.9%
Catalogue numberZX-015257
CAS number7440-21-3
IUPAC namesilicon
Molecular formulaSi
Molar mass28.09 g/mol
Exact mass27.9769
Purity / assay99.9%
Physical formPowder
AppearanceGrey to dark grey powder
Melting point1410 °C
Boiling point2355 °C
Density2.33 g/mL at 25 °C
H-bond donors / acceptors0 / 0
Topological polar surface area0 Ų
HS code28046900
UN numberUN 1346
InChIKeyXUIMIQQOPSSXEZ-UHFFFAOYSA-N
SMILES[Si]
PubChem CID5461123
SynonymsSilicon high purity

Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.

Safety and GHS hazards

GHS02 Flammable
Flammable

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

Pack sizes of Silicon powder, -325 mesh, 99.9%
100 gQuoted on request
500 gQuoted on request
1 kgQuoted on request
4 x 25 kgQuoted 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, -325 mesh, 99.9%

Which CAS number identifies Silicon powder, -325 mesh, 99.9%?
Silicon powder, -325 mesh, 99.9% is registered under CAS 7440-21-3. You may also see it listed as Silicon high purity. Our catalogue number for this item is ZX-015257.
What are the formula and molar mass of Silicon powder, -325 mesh, 99.9%?
For Silicon powder, -325 mesh, 99.9%, its formula is Si and its molar mass is 28.09 g/mol. The systematic (IUPAC) name is silicon. InChIKey XUIMIQQOPSSXEZ-UHFFFAOYSA-N lets you match it in any structure database.
What grade and pack sizes are available for Silicon powder, -325 mesh, 99.9%?
This listing is 99.9% purity. Standard packs are 100 g, 500 g, 1 kg, 4 x 25 kg. Larger quantities and custom packing can be quoted on request.
Which documents come with Silicon powder, -325 mesh, 99.9%?
Each lot ships with a batch certificate of analysis and a 16-section GHS safety data sheet. A typical COA or specification sheet can be shared with the quotation before you order.
Can Zemixal ship Silicon powder, -325 mesh, 99.9% to my country?
Yes. Because Silicon powder, -325 mesh, 99.9% is classed as hazardous (UN 1346), it travels in UN-approved packaging as dangerous goods under IATA or IMDG rules, with the export paperwork your broker needs.

Other grades with CAS 7440-21-3

All 21 grades

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