Sodium hexafluorosilicate (Na₂SiF₆) is an inorganic ceramic compound commonly used as a fluorinating agent and glass additive in industrial chemistry. It serves primarily in aluminum production (cryolite substitute), glass manufacturing, and metal surface treatment, where its fluorine content enables effective fluxing and processing. Engineers select this material for applications requiring controlled fluorination or where cost-effective alternatives to cryolite are needed, though handling requires attention to fluoride toxicity and reactivity with moisture.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K) | 43.81 | GPa | — | ||
Poisson's Ratio(ν) | 0.2900 | - | — | ||
Shear Modulus(G) | 23.19 | GPa | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 2.818 | kg/m³ | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 7.266 | eV | — | ||
Dielectric Constant (Relative Permittivity)(εr) | 4.656 | - | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Piezoelectric Modulus(eij) | 0.000 | C/m² | — | ||
Seebeck Coefficient(S) | -103.5 | µV/K | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.05140 | eV/atom | — | ||
Formation Energy(ΔHf)2 entries | -3.354 | eV/atom | — | ||
| ↳ | -3.157 | eV/atom | — |