CaAl2Si2O8 — Properties & Data | MatWorld

CaAl2Si2O8

ceramic

· JVASP-145434· CaAl2Si2O8

Anorthite (CaAl₂Si₂O₈) is a calcium alumina silicate ceramic belonging to the plagioclase feldspar mineral family, commonly found as a natural mineral phase and engineered ceramic constituent. It is widely used in refractory applications, glass-ceramics, and porcelain formulations due to its thermal stability and low thermal expansion. Engineers select anorthite-based materials for high-temperature environments where chemical inertness and dimensional stability are critical, and it serves as a key phase in engineering ceramics competing with alternative refractories through its balanced combination of mechanical strength retention at temperature and cost-effectiveness.

refractory liningshigh-temperature furnacesglass-ceramic coatingsporcelain and technical ceramicsthermal insulation compositeskiln furniture

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	2.687	kg/m³	DFT · OptB88vdW

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

Property	Value	Unit	Conditions
Band Gap(Eg)	4.803	eV	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)	2.727	-	DFT · OptB88vdW
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.02330	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-3.182	eV/atom	DFT · OptB88vdW

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.

CaAl2Si2O8

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental