Silicon
ALDRICH/215619 - powder, −325 mesh, 99% trace metals basis
CAS Number: 7440-21-3
Empirical Formula (Hill Notation): Si
Molecular Weight: 28.09
EC Number: 231-130-8
MDL Number: MFCD00085311
Linear Formula: Si
Product Type: Chemical
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: 215619-1KG
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: 215619-250G
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: 215619-50G
| assay | 99% trace metals basis |
| bp | 2355 °C (lit.) |
| density | 2.33 g/mL at 25 °C (lit.) |
| form | powder |
| InChI | 1S/Si |
| InChI key | XUIMIQQOPSSXEZ-UHFFFAOYSA |
| mp | 1410 °C (lit.) |
| particle size | −325 mesh |
| Quality Level | 100  |
| SMILES string | [Si] |
| Application: | Silicon can be used as anode material in lithium-ion batteries. It can be used to fabricate Al2O3-C refractories. The silicon powder generates β-Sialon whiskers which imparts high-temperature strength, slag resistance and thermal shock resistance of the refractories. It can be incorporated into high-densitypolyethylene (HDPE) polymer composites. The addition of silicon powder enhancesthermal stability and thermal conductivity of composites. |
| General description: | Silicon powder is a fine, gray powder. This silicon powder has been passed through a 325-mesh screen, meaning that the particles are small enough to pass through a sieve with openings that are approximately 44 thousandths of an inch in diameter. Silicon is a chemical element and is a hard, brittle, metallic-gray solid that is highly resistant to chemical attack and has a high melting point. Silicon is the second most abundant element in the Earth’s crust and is found in a variety of minerals. |
| Packaging: | 1 kg in glass bottle |
| Packaging: | 50, 250 g in glass bottle |
| Symbol |  GHS02 |
| Signal word | Warning |
| Hazard statements | H228 |
| Precautionary statements | P210 - P240 - P241 - P280 - P370 + P378 |
| Hazard Codes | F |
| Risk Statements | 11 |
| RIDADR | UN1346 - class 4.1 - PG 3 - Silicon powder, amorphous |
| WGK Germany | WGK 3 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Purity | 99% trace metals basis |
| bp | 2355 °C (lit.) |
| mp | 1410 °C (lit.) |
| Density | 2.33 g/mL at 25 °C (lit.) |
| UNSPSC | 12352300 |