Na2PHO3 — Properties & Data | MatWorld

Na2PHO3

ceramic

· JVASP-25787· Na2PHO3

Sodium phosphite (Na₂PHO₃) is an inorganic ceramic compound belonging to the phosphite family, characterized by its ionic crystal structure and moderate mechanical stiffness. While not a commodity engineering ceramic, sodium phosphite and related phosphite compounds have emerging applications in thermal management, flame retardancy, and specialized chemical processing due to their thermal stability and reactivity with organic polymers. Engineers consider phosphite ceramics primarily for niche roles where their chemical functionality—particularly as antioxidants or thermal stabilizers in composite systems—outweighs the performance advantages of conventional ceramics like alumina or silicates.

flame retardant additivespolymer thermal stabilizationresearch/specialty ceramicschemical processing environmentsantioxidant formulations

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	38.43	GPa	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2500	-	DFT · OptB88vdW
Shear Modulus(G)	22.68	GPa	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	2.473	kg/m³	DFT · OptB88vdW

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Filter by

Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	5.994	eV	DFT · OptB88vdW
↳	8.703	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	2.562	-	DFT · OptB88vdW
↳	1.965	-	DFT · TBmBJ
Thermoelectric Power Factor(PF)2 entries	0.00103	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000143	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-265.5	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	436.3	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)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-1.952	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.

Na2PHO3

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental