Ca4H8O18P4
calcium dihydrogen phosphate · monocalcium phosphate, calcium biphosphate, acid calcium phosphate
Calcium dihydrogen phosphate is a chemical compound frequently used as a leavening agent in baking and as a mineral supplement in animal feed. It is a calcium salt of phosphoric acid that plays a significant role in food processing and agricultural nutrition.
Key Properties
Cross-validated computational properties for calcium dihydrogen phosphate, aggregated across 3 databases.
Band GapEnergy needed to move an electron from the valence band to the conduction band. Lower or zero values tend to behave more metallic; larger gaps are more insulating or semiconducting.
Energy Above HullThermodynamic distance from the most stable set of competing phases. 0 eV/atom is on the convex hull; small positive values may still be experimentally accessible.
StabilityA plain-language summary of the best reported energy-above-hull result. It reflects whether the lowest-energy structure is on, near, or far from the stability hull.
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
Reported Structures
Lowest-energy structures reported for Ca4H8O18P4, ranked by energy above hull.
| Space GroupSymmetry classification of the crystal arrangement. The number is the international space-group index. | Crystal SystemBroad lattice family, such as cubic, tetragonal, monoclinic, or triclinic, derived from unit-cell symmetry. | Band Gap (eV)Electronic gap calculated for this specific reported structure, measured in electronvolts. | E above hull (eV/atom)Thermodynamic distance from the convex hull for this structure, normalized per atom. Lower is generally more stable. | E/atom (eV)Computed total energy normalized per atom. Use energy above hull, not this value alone, when comparing stability. | Density (g/cm³)Mass per relaxed crystal volume, reported in grams per cubic centimeter. |
|---|---|---|---|---|---|
| P-1 (No. 2) | triclinic | 5.06 | 0.0088 | -6.814 | 2.48 |
| P-1 (No. 2) | — | — | — | — | — |
| No. 0 | unknown | — | — | — | 0.64 |
| No. 0 | unknown | — | — | — | 0.63 |
Applications
Where calcium dihydrogen phosphate is used.
Frequently Asked Questions
Common questions about calcium dihydrogen phosphate, answered from cross-validated data.
What is Ca4H8O18P4?
Calcium dihydrogen phosphate is a chemical compound frequently used as a leavening agent in baking and as a mineral supplement in animal feed. It is a calcium salt of phosphoric acid that plays a significant role in food processing and agricultural nutrition.
What is Ca4H8O18P4 used for?
What is the band gap of Ca4H8O18P4?
Is Ca4H8O18P4 a metal, semiconductor, or insulator?
Is Ca4H8O18P4 thermodynamically stable?
What is the crystal structure of Ca4H8O18P4?
What is the density of Ca4H8O18P4?
How many polymorphs of Ca4H8O18P4 are known?
What elements does Ca4H8O18P4 contain?
Where does the data for Ca4H8O18P4 come from?
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- aflow — Data from AFLOW. Cite: Curtarolo et al., Comp. Mater. Sci. 58, 218 (2012).
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
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