CaSO4 — Properties & Data | MatWorld

CaSO4

Name: CaSO4
Brand: MatWorld

ceramic

· CaSO4

Calcium sulfate (CaSO₄) is an inorganic ceramic compound commonly encountered in two hydrated forms: dihydrate (gypsum) and hemihydrate (plaster of Paris). It is a brittle, crystalline material valued for its low cost, availability, and biocompatibility, making it practical for applications where moderate stiffness and ease of processing are priorities. In construction and medical fields, calcium sulfate is prized for rapid setting, dimensional stability, and the ability to be cast or molded; in biomedical contexts, its resorbability and non-toxicity make it suitable for temporary structural support, though it is generally softer and less durable than competing ceramics like alumina or zirconia.

bone scaffolds and orthopedic fillersgypsum plasterboard and drywalldental and maxillofacial applicationsinvestment casting moldslaboratory casting and toolingbioabsorbable implant matrices

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	10,062.7	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2900	-	DFT · OptB88vdW
Shear Modulus(G)	5,968.3	ksi	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.1140	lb/in³	DFT · OptB88vdW

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

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	6.472	eV	DFT · OptB88vdW
Dielectric Constant (Relative Permittivity)(εr)2 entries	8.296	-	DFT · OptB88vdW
↳	4.979 range 2.735–7.223median of 2 measurements	-	DFT · PBEsol
High-Frequency Dielectric Constant (ε∞)(ε∞)	2.892	-	DFT · OptB88vdW
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.03331	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000730	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00112	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-122.2	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	419.6	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C

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)	0.00870	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)2 entries	-2.319	eV/atom	DFT · OptB88vdW
↳	-2.477	eV/atom	Measured

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.

CaSO4

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental