MgCO3 — Properties & Data | MatWorld

MgCO3

Name: MgCO3
Brand: MatWorld

ceramic

· MgCO3

Magnesium carbonate (MgCO3) is an inorganic ceramic compound commonly found in nature as the mineral magnesite, valued for its chemical stability and thermal properties. It is widely used as a filler and reinforcement agent in rubber and plastic compounds, as a refractory material in high-temperature applications, and in pharmaceutical and food processing industries where it serves as an anti-caking agent and dietary supplement. Engineers choose MgCO3 over alternatives like calcium carbonate when thermal stability, lower density, or specific chemical inertness is required, though its brittleness and moderate strength limit it to non-structural roles in most applications.

rubber compounding and fillersrefractory liningsthermal insulationpharmaceutical excipientsfood additivesmineral filler applications

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	15,273.9	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.3300	-	DFT · OptB88vdW
Shear Modulus(G)	7,256.2	ksi	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.1135	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)2 entries	5.224	eV	DFT · OptB88vdW
↳	7.147	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	2.974	-	DFT · OptB88vdW
↳	2.441	-	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00137	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00193	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-305	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	460.5	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	0.000	%	DFT · TBmBJ

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)	0.3926	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)2 entries	-1.803	eV/atom	DFT · OptB88vdW
↳	-2.304	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.

MgCO3

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental