What is Zirconium Sulfate Phosphate?
Zirconium Sulfate Phosphate
Zirconium Sulfate Phosphate is an alpha-Zr2SP2O12 framework ceramic in the zirconium NTE family. Its sulfate-phosphate composition keeps it distinct from tungstate-phosphate and ZrW2O8 routes.
Technical owner: Aurexene Materials Engineering Team · Last updated: 2026-07-25
zirconium sulfate phosphate NTEalpha-Zr2SP2O12Zr2SxP2O12-delta
What It Is Not
- Zirconium Sulfate Phosphate is not zirconium tungstate phosphate or ZrW2O8 zirconium tungstate.
When Not to Use It
- Do not use the literature measurement range as a continuous-service rating; 350 °C is a transient peak only for the supplied powder.
- Do not use the material in aqueous processing outside pH 7-10 without surface-stability validation.
Intrinsic Screening Summary
- Identity screen
- alpha-Zr2SP2O12 sulfate-phosphate framework family; sulfur-deficient variants are alpha-Zr2SxP2O12-delta; White inorganic framework ceramic powder
- Intrinsic feature
- Framework-type contraction operates below 393 K and above 453 K; an isosymmetric phase transition produces a larger contraction at 393-453 K. Sulfur deficiency changes the magnitude, so composition must accompany every CTE value.
- Material-level integration
- Track composition, phase, particle state, thermal history, and post-process phase retention for the alpha-Zr2SP2O12 route. Keep sulfur-bearing composition and phase evidence separate from tungstate-phosphate composite or sintering studies.
Application Fit
Material Identity & Specification Status
Approved values for CAS / identity, Particle size, Density, Purity, and Packaging are not published; confirm them during quotation or sample review.
| Property | Value |
|---|---|
| Composition | alpha-Zr2SP2O12 sulfate-phosphate framework family; sulfur-deficient variants are alpha-Zr2SxP2O12-delta |
| Morphology | White inorganic framework ceramic powder |
| Storage | Dry sealed container |
Why It Works
| Structure | Function | Mechanism |
|---|---|---|
| alpha-Zr2SP2O12; Inorganic framework ceramic material | Sulfate-phosphate framework route whose sulfur-bearing composition is the primary identity boundary. | Framework-type contraction operates below 393 K and above 453 K; an isosymmetric phase transition produces a larger contraction at 393-453 K. Sulfur deficiency changes the magnitude, so composition must accompany every CTE value. |
Compare Material Routes
| Material / Route | Decision Boundary |
|---|---|
| Zirconium Tungstate Phosphate | Zirconium Sulfate Phosphate is the alpha-Zr2SP2O12 sulfate-phosphate route, so sulfur-bearing composition and phase confirmation define the material identity. Zirconium Tungstate Phosphate is Zr2WP2O12 and has separate tungsten-bearing composition and composite-sintering evidence; data cannot be transferred between the two names. |
Technical Guides
| Technical Guide | Summary |
|---|---|
| How Phase Purity and Composition Determine the Useful NTE Temperature Window | How Phase Purity and Composition Determine the Useful NTE Temperature Window — a method-conditioned engineering guide for Negative Thermal Expansion (NTE) Systems covering structure-function behavior at the material, interface, and finished-system boundary, process limits, validation, and qualification boundaries. |
| Incorporating Zirconium, Vanadate, and Bismuth-Based NTE Materials into Host Matrices | Incorporating Zirconium, Vanadate, and Bismuth-Based NTE Materials into Host Matrices — a method-conditioned engineering guide for Negative Thermal Expansion (NTE) Systems covering structure-function behavior at the material, interface, and finished-system boundary, process limits, validation, and qualification boundaries. |
| Measuring Effective CTE in Powders, Pellets, Composites, Coatings, and Joined Assemblies | Measuring Effective CTE in Powders, Pellets, Composites, Coatings, and Joined Assemblies — a method-conditioned engineering guide for Negative Thermal Expansion (NTE) Systems covering structure-function behavior at the material, interface, and finished-system boundary, process limits, validation, and qualification boundaries. |
| Qualifying NTE Materials for Thermal Cycling, Dimensional Stability, and Production Variation | Qualifying NTE Materials for Thermal Cycling, Dimensional Stability, and Production Variation — a method-conditioned engineering guide for Negative Thermal Expansion (NTE) Systems covering structure-function behavior at the material, interface, and finished-system boundary, process limits, validation, and qualification boundaries. |
Documents & Inquiry
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Technical Data Sheet
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Safety Data Sheet
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Grade, Sample & Qualification Support
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