MG1685 Magnesite Powder (MgCO3)

Catalog No. MG1685
Surface Area 20
Bulk Density(g/cm3) 3.1 to 3.4
Color white
Molecular Weight 40.32
CAS Number 39409-82-0

Magnesite powder is used in the manufacture of basic refractories capable of withstanding extremely high temperatures and for special types of cement and powders used in the paper, rubber, and pharmaceutical industries. Stanford Advanced Materials (SAM) specializes in producing high-quality magnesite powder (MgCO3).

Related products: Fused Magnesia.
Other magnesium products such as High Purity Magnesium Lump, High Purity Magnesium Ingot, and Magnesium Alloys are all available.

Magnesite Powder Description

Magnesite occurs naturally, often with iron, manganese, or other activator elements. It is formed by the alternation of ultramafic rocks through the action of water containing carbonic acid. Several large deposits are found throughout the world.
Chemical Names: Magnesium carbonate
Chemical Formula: MgCO3
magnesite powder, (MgCO3), magnesite, magnesium carbonate, deadburned magnesite, calcined magnesite, carbonic acid, magnesium salt, carbonate magnesium, hydromagnesite, magnesium carbonate, magnesium(II) carbonate, CAS# 1309-48-4, 12440-90-3, 13717-00-5, 1784-39-0, 183480-27-5, 546-93-0, 68973-26-2, 7757-69-9, AI3-00768, Apolda, Australian magnesite, C.I. 77713, magnesium salt (xMg), Caswell No. 530, CHEBI:31793, CI 77713, DCI light magnesium carbonate, Destab, EINECS 208-915-9, EINECS 231-817-2, EPA Pesticide Chemical Code 073503, Giobertite, Gold Star (carbonate), GP 20 (carbonate), HSDB 211, Hydromagnesite, Kimboshi, LS-181780, MA 70 (carbonate), Magfy, Magmaster, Magnesite (Mg(CO3)), Magnesite dust, Magnesium carbonate anhydrous, Magnesium carbonate anhydrous [USAN], MAGNESIUM CARBONATE DIHYDRATE, Magnesium(II) carbonate (1:1), Magnesiumkarbonat, MgCO3, NSC 83511, Stan-mag magnesium carbonate

Magnesite Powder MgCO3

Chemical Properties
Deadburned and calcined
Physical Properties
5 x 20 mesh, 12 mesh, 60 mesh, 100 mesh, and 325 mesh USS


Typical Applications of Magnesite Powder

An important ore of magnesium and its salts. Used in the manufacture of basic refractories capable of withstanding extremely high temperatures and for special types of cement and powders used in the paper, rubber, and pharmaceutical industries.

Packaging of Magnesite Powder

Jars, pails, drums, multiply paper bags, bulk bags, and fiberboard containers. For further information on packaging options contact SAM.

Specifications of Magnesite Powder

Molecular Weight (g/mol.)




Bulk Density (g/cm3)

3.1 to 3.4

MLT (°F) (Decomposes)



brittle - conchoidal

Surface Area (m2/g)




Mohs Hardness @20°C

~3.5 - 5.0

Specific Gravity (g/cc)


Particle Shape




Crystal System


Magnesite Powder (MgCO3) CAS Number:
Calcined Magnesite= CAS# 1309-48-4
Deadburned Magnesite= CAS# 1309-48-4
Magnesite Powder (MgCO3) RTECS Number: OM2470000
Magnesite Powder (MgCO3) ICSC Number: 0969


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