NaPaO3 — Properties & Data | MatWorld

NaPaO3

ceramic

· NaPaO3

Sodium polyphosphate (NaPaO3) is an inorganic ceramic compound belonging to the phosphate glass and polyphosphate family, characterized by a chain-like polymeric structure of phosphate units bonded through oxygen bridges. This material is primarily used in industrial applications including water treatment (as a dispersant and scale inhibitor), detergent formulations, and specialized ceramic binders, where its chemical stability and ability to sequester ions are valued. NaPaO3 is notable for its solubility in water and hygroscopic nature, distinguishing it from traditional silicate ceramics; engineers select it when ionic bonding and chemical reactivity—rather than mechanical strength alone—are the design drivers.

water treatment and scale inhibitiondetergent and surfactant additivesceramic binders and refractoriescorrosion inhibition coatingsmetal sequestration applicationsspecialty glass precursor

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	137.4	GPa	DFT · OptB88vdW
Poisson's Ratio(ν)	0.3200	-	DFT · OptB88vdW
Shear Modulus(G)	66.48	GPa	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	6.072	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)3 entries	3.280	eV	DFT · OptB88vdW
↳	3.323	eV	DFT · TBmBJ
↳	4.349	eV	DFT · PBE
Dielectric Constant (Relative Permittivity)(εr)	11.35	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	4.164	-	DFT · OptB88vdW
↳	3.774	-	DFT · TBmBJ
Electron Effective Mass(m*e)	2.660	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	1.200	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)2 entries	0.000	μB	DFT
↳	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.000	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000786	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00299	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-310.5	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	341.5	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	2.160	%	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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Method

Property	Value	Unit	Conditions
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)2 entries	-2.915	eV/atom	DFT
↳	-3.216	eV/atom	DFT · OptB88vdW

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.

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.

NaPaO3

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental