KNaSO4 — Properties & Data | MatWorld

KNaSO4

ceramic

· JVASP-57852· KNaSO4

KNaSO₄ (potassium sodium sulfate) is an inorganic ceramic compound belonging to the sulfate family, relevant to materials science primarily in thermal energy storage and phase-change material research. This double salt exhibits interesting thermal cycling behavior and is studied for applications requiring materials that can absorb and release heat through reversible phase transitions. While not widely deployed in high-volume engineering applications, KNaSO₄ represents an important reference compound in thermal storage system development and is notable for its potential cost-effectiveness compared to organic phase-change materials, though its industrial adoption remains limited to specialized thermal management research.

thermal energy storage systemsphase-change materials researchbuilding thermal mass applicationslaboratory reference standardsexperimental heat recovery systemsmaterials science research

Compliance & Regulations

?Conflict Free?RoHS?REACH?TSCA?Prop 65

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	37.39	GPa	DFT · OptB88vdW
Poisson's Ratio(ν)	0.3300	-	DFT · OptB88vdW
Shear Modulus(G)	21.07	GPa	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

Property	Value	Unit	Conditions	Source
Density(ρ)	2.705	kg/m³	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	5.506	eV	DFT · OptB88vdW
↳	8.813	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)	11.55	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	2.539	-	DFT · OptB88vdW
↳	2.061	-	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.01407	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000812	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000475	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-131.3	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	466.4	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	0.000	%	DFT · TBmBJ

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, or test environment.

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Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.01460	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-1.951	eV/atom	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

Reference data from cited sources. Not verified or certified by MatWorld Inc. Verify against the source before use in design. Terms: engineering data

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.

KNaSO4

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental