KNO3
ceramic· KNO3
Potassium nitrate (KNO₃) is an inorganic ionic ceramic compound commonly known as saltpeter, valued for its oxidizing properties and thermal stability. It is widely used in pyrotechnics, explosives, fertilizers, food preservation, and heat transfer applications, where its ability to remain stable at elevated temperatures and facilitate controlled oxidation reactions makes it preferable to many alternatives. In specialized engineering contexts, KNO₃ serves as a molten salt heat transfer medium in concentrated solar power systems and as a component in specialized coatings and treatments requiring controlled oxidation environments.
pyrotechnics and explosivesconcentrated solar power systemsmolten salt heat transferoxidation control coatingsthermal stability applicationsfood preservation and processing
Compliance & Regulations
?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K) | 3,482.4 | ksi | — | ||
Poisson's Ratio(ν) | 0.3100 | - | — | ||
Shear Modulus(G) | 1,657.8 | ksi | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 0.08009 | lb/in³ | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 2.824 | eV | — | ||
Dielectric Constant (Relative Permittivity)(εr)3 entries | 4.900 | - | — | ||
| ↳ | 4.673 | - | — | ||
| ↳ | 3.552 range 2.219–4.884median of 2 measurements | - | — | ||
Electronic Dielectric Tensor(ε∞) | Matrix (redacted) | - | — | ||
Total Dielectric Tensor(ε) | Matrix (redacted) | - | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Piezoelectric Modulus(eij)2 entries | 0.2216 | C/m² | — | ||
| ↳ | 0.3104 | C/m² | — | ||
Piezoelectric Stress Tensor(eij) | Matrix (redacted) | C/m² | — | ||
Seebeck Coefficient(S) | -352 | µV/K | — |
N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form / heat treatment / basis.
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.000 | eV/atom | — | ||
Formation Energy(ΔHf)2 entries | -1.025 | eV/atom | — | ||
| ↳ | -1.065 | eV/atom | — |
N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form / heat treatment / basis.
Verified Unverified Low confidence (<80%) Link to source
Regulatory Screening
Environmental
RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.