SrSO4

Name: SrSO4
Brand: MatWorld

ceramic

· SrSO4

Strontium sulfate (SrSO₄) is an inorganic ceramic compound that occurs naturally as the mineral celestine and is also manufactured synthetically for industrial applications. It is valued in industries requiring high-density, chemically stable particulates and is commonly used as a weighting agent in oil and gas drilling fluids, a radiopaque filler in medical imaging formulations, and a pigment or filler in paints, coatings, and plastics. Engineers select SrSO₄ over alternatives when chemical inertness, high specific gravity, and low solubility in aqueous environments are critical—making it particularly suited to demanding downhole and subsurface applications where corrosion resistance and dimensional stability matter.

oil and gas drilling fluidsmedical radiopaque agentspaint and coating fillerspolymer reinforcementX-ray imaging formulationschemical-resistant ceramics

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	9,988.7	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2900	-	DFT · OptB88vdW
Shear Modulus(G)	2,735.4	ksi	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.1422	lb/in³	DFT · OptB88vdW

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

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Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	6.523	eV	DFT · OptB88vdW
Dielectric Constant (Relative Permittivity)(εr)	111.8	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)	2.986	-	DFT · OptB88vdW
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.2466	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000555	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000514	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-101.1	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	416.3	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.

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

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Method

Property	Value	Unit	Conditions
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)2 entries	-2.357	eV/atom	DFT · OptB88vdW
↳	-2.510	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.

SrSO4 — Properties & Data | MatWorld

SrSO4

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental