Magnesium Carbonate - Materials / Alfa Chemistry

NAVIGATION

Magnesium Carbonate

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Catalog Number

ACMA00017003

Product Name

Magnesium Carbonate

Category

Polymers

Description

Magnesite appears as white, yellowish, grayish-white or brown crystalline solid or crystalline powder. Density: 3-3.1 g cm-3. An important ore for magnesium. Used in the manufacture of materials capable of withstanding very high temperatures. Sometimes used to produce carbon dioxide.;DryPowder; Liquid; OtherSolid; PelletsLargeCrystals;Odourless, light, white friable masses or as a bulky white powder;WHITE POWDER.;White, odorless, crystalline powder.;White, odorless, crystalline powder.

IUPAC Name

magnesium;carbonate

Molecular Weight

84.31g/mol

Molecular Formula

MgCO3? nH₂O;MgCO3;MgCO3;CMgO3

Canonical SMILES

C(=O)([O-])[O-].[Mg+2]

InChI

InChI=1S/CH₂O3.Mg/c2-1(3)4;/h(H2,2,3,4);/q;+2/p-2

InChI Key

ZLNQQNXFFQJAID-UHFFFAOYSA-L

Boiling Point

Decomposes (NIOSH, 2016);Decomposes;Decomposes;Decomposes

Melting Point

662 °F (Decomposes) (NIOSH, 2016);Decomposes at 350;Mp 350 ° dec.;990 °C;662°F (decomposes);662°F (Decomposes)

Density

2.96 (NIOSH, 2016);3.0;Relative density (water = 1): 2.95;2.96;2.96

Solubility

0.01 % (NIOSH, 2016);0.1g/L;Practically insoluble both in water or ethanol;0.0106 G/100 CC COLD WATER;SOL IN ACID, AQ CARBON DIOXIDE; INSOL IN ACETONE, AMMONIA;Insoluble in alcohol; soluble in acids;Solubility in water, g/100ml at 20 °C: 0.01 (very poor);0.01%

Application

Magnesium carbonate (MgCO3) serves a variety of essential purposes due to its versatile properties. It is manufactured through processes such as introducing carbon dioxide to magnesium oxide or hydroxide, and found naturally in the mineral magnesite. This compound is widely used in pharmaceuticals, such as magnesium citrate, and as a desiccant to prevent caking in hygroscopic products like table salt. Additionally, magnesium carbonate is critical in enhancing rubber strength and is utilized in the production of dyes, inks, and cosmetics. Chemically, it features a calcite structure with magnesium ions surrounded by oxygen atoms, and has several stable hydrated and basic carbonate forms occurring in nature. The terms "light" and "heavy" magnesium carbonates are references to its hydroxycarbonates, and its anhydrous form is represented by visible triangular CO3 groups in its structure.

Color/Form

Light, bulky, white powder

Complexity

18.8

Covalently-Bonded Unit Count

EC Number

208-915-9;208-915-9;231-817-2;307-549-8;604-004-9

Exact Mass

83.969786g/mol

Formal Charge

Heavy Atom Count

ICSC Number

0969

MeSH Entry Terms

anhydrous magnesium carbonate;C.I. 77713;carbonic acid, magnesium salt (1:1), hydrate;CI 77713;E-504;magnesite;magnesite (Mg(CO3));magnesium carbonate;magnesium carbonate (1:1) hydrate;magnesium carbonate anhydrous;MgCO3.3H₂O;nesquehonite

Monoisotopic Mass

83.969786g/mol

Odor

Odorless

Other Experimental

HEATED ... MAGNESIUM BICARBONATE LOSES CARBON DIOXIDE & WATER & MAGNESIUM CARBONATE PPT. ... GENERALLY YIELDS LIGHT CARBONATE.;Bulk density approximately 4 lb/cu ft;Heat of Formation = -1096 kJ/mol;White, friable masses or bulky, white powder; at about 700 °C is converted to MgO; sol in about 3,300 parts CO2-free water; more sol in water containing CO2; sol in dilute acids with effervescence; insol in alcohol /Magnesium carbonate hydroxide/;Colorless crystals; refractive index: 1.458, 1.473, 1.501; density: 2.83 g/cu-cm /Dihydrate/;Colorless to white crystals; density: 1.84 g/cu cm; MP: 165 °C (decomp); soluble in cold water (0.129 wt%) /Trihydrate/;White monoclinic crystals; density: 1.73 g/cu cm /Pentahydrate/

Refractive Index

Index of refraction: 1.536 (alpha), 1.741 (beta)

Rotatable Bond Count

RTECS Number

OM2470000

Stability

STABLE IN AIR

UNII

0IHC698356

Vapor Pressure

0 mm Hg (approx) (NIOSH, 2016);0 mmHg (approx);0 mmHg (approx)

MSDS