SrSO4

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
PropertyValueUnitConditionsSource
Bulk Modulus(K)
ksi
Poisson's Ratio(ν)
-
Shear Modulus(G)
ksi
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Density(ρ)
lb/in³
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Band Gap(Eg)
eV
Dielectric Constant (Relative Permittivity)(εr)
-
Magnetic Moment(μB)
µB
Piezoelectric Modulus(eij)
C/m²
Seebeck Coefficient(S)
µV/K
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Energy Above Hull(ΔEhull)
eV/atom
Formation Energy(ΔHf)2 entries
eV/atom
eV/atom
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.
Verified Unverified Low confidence (<80%) Link to source

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