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
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
Selection & Validation Framework
| Decision Question | Material-Level Answer |
|---|---|
| Integration and processing criteria | Required for: Negative Thermal Expansion (NTE) Systems. Measure: composition and sulfur stoichiometry; crystal phase; temperature-conditioned CTE; particle distribution; settling; redispersion; storage stability; moisture exposure; pH exposure and surface retention. Sample state: final host formulation or part state. Failure signals: Request approved data. |
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. |
Commercial Availability
Supplier role: Request confirmation
Supply status: Request confirmation
Sample status: Sample availability requires confirmation
Commercial details are not published until the source and verification fields are complete and the Supplier Data Packet is signed by the sales owner, technical reviewer, and resource/compliance owner. Request current grade, form, sample, packaging, and delivery confirmation.
Documents & Inquiry
Document access follows the current approval state. Unapproved or unavailable files route to a document request instead of a public download.
Technical Data Sheet
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Safety Data Sheet
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Grade, Sample & Qualification Support
The Aurexene Materials Engineering Team can review the required form, host system, formulation or process, target, sample quantity, volume and timeline, and the grade-specific evidence needed before qualification.
Review Lab Capabilities for sample evaluation and qualification support, or Production Capabilities for scale-up, quality, documentation, and supply support.
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