Ca4 Si2 O8

ceramic

· Ca4 Si2 O8

Ca4Si2O8 is a calcium silicate ceramic compound that belongs to the family of silicate minerals and is structurally related to phases found in Portland cement clinker. This material is primarily encountered in cement chemistry and concrete research rather than as a standalone engineered ceramic, where it contributes to the hydration and strength-development mechanisms in portland cement-based systems. Engineers select calcium silicate phases for applications requiring high-temperature stability, low-cost bulk production, and durability in moisture-rich environments, making it relevant to construction materials, concrete composites, and infrastructure applications where long-term chemical stability is critical.

Portland cement constituentConcrete and cementitious compositesHigh-temperature refractoriesCivil infrastructureConstruction materials researchCalcium silicate binders

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)	13,934.9	ksi	—
Shear Modulus(G)	5,289.1	ksi	—

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

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	4.507 range 4.499–4.515median of 2 measurements	eV	—

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

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-3.218 range -3.266–-3.169median of 2 measurements	eV/atom	—

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.

Ca4 Si2 O8

Mechanical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental