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Magnesium carbonate

Chemical Properties Occurrence and Uses Preparation
Magnesium carbonate
Magnesium carbonate
CAS No.
13717-00-5
Chemical Name:
Magnesium carbonate
Synonyms
MAGNESITE;giobertite;heavycp2000;MAGGRAN(R) MC;MAGNESIA 81811;MAGNESIA 81010;Magnesite dust;MAGGRAN(R) MCPLUS;MAGNESIUM CARBONATE;Magnesite (Mg(CO3))
CBNumber:
CB3146620
Molecular Formula:
CMgO3
Formula Weight:
84.31
MOL File:
13717-00-5.mol

Magnesium carbonate Properties

CAS DataBase Reference
13717-00-5(CAS DataBase Reference)
EPA Substance Registry System
Magnesite (Mg(CO3))(13717-00-5)

SAFETY

Magnesium carbonate price

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Magnesium carbonate Chemical Properties,Uses,Production

Chemical Properties

Magnesium carbonate, MgC03, is a light, bulky white powder, very slightly soluble in water,loses CO2 even on gentle heating. It is used extensively in the manufacture of food products, pharmaceuticals, cosmetics, and magnesium salts.

Occurrence and Uses

Magnesium carbonate occurs in nature in several minerals as hydrated, basic and double salts, as shown above. The two principal minerals are magnesite, MgCO3 and dolomite, a double salt, CaCO3•MgCO3. Both minerals are used as source materials in the production of magnesium metal. Also, they are calcined to produce basic refractory bricks. Other applications of magnesium carbonate are in flooring, fireproofing and fire-extinguishing compositions; as a filler material and smoke suppressant in plastics; as a reinforcing agent in neoprene rubber; as a drying agent and for color retention in foods; in cosmetics; in dusting powder; and in toothpaste. The high purity magnesium carbonate is used as an antacid in medicine; and as an additive to table salt. Another important application of magnesium carbonate is as a starting material in producing a number of magnesium compounds.

Preparation

Magnesium carbonate is obtained mainly by mining its natural mineral magnesite. The trihydrate salt, MgCO3•3H2O, is prepared by mixing solutions of magnesium and carbonate ions in the presence of carbon dioxide. Alternatively, it may be produced by carbonation of a magnesium hydroxide slurry with carbon dioxide under pressure (3.5 to 5 atm) and at a temperature below 50°C which yields soluble magnesium bicarbonate:
Mg(OH)2 + 2CO2 → Mg(HCO3)2
The solution is filtered to remove impurities and the filtrate is subjected to vacuum or aeration to yield insoluble magnesium carbonate as a hydrated salt:
Mg2 + 2HCO3¯ → MgCO3 + CO2 + H2O
Under ordinary conditions, anhydrous magnesium carbonate cannot be prepared in aqueous systems. The anhydrous salt, however, can be made under very high partial pressures of carbon dioxide.
Basic magnesium carbonate occurs in nature as the mineral hydromagnesite. The basic salt is obtained by mining the ore followed by purification. The basic carbonates also can be made by drying the magnesium carbonate trihydrate at about 100°C. Alternatively it can be prepared by simply boiling a solution of magnesium bicarbonate. The bicarbonate is obtained by carbonation of a magnesium hydroxide slurry below 50°C and under a CO2 partial pressure of 3.5 to 5 atm. Composition of the basic carbonate produced by the above methods is 4MgCO3 •Mg(OH)2•4H2O.
Another basic salt, MgCO3•Mg(OH)3•3H2O is precipitated when magnesium salt solution is treated with sodium carbonate solution. The reactions probably are:
CO32– + H2O → HCO3¯ + OH¯
2Mg2+ + CO32– + 2OH¯ → MgCO3•Mg(OH)2

Chemical Properties

Light, bulky, white powder. Soluble in acids; very slightly soluble in water; insoluble in alcohol. Noncombustible.

Uses

Magnesium Carbonate is an anticaking agent and general purpose food additive. it is practically insoluble in water but is more soluble in water containing carbon dioxide. it imparts a slightly alkaline reaction to the water. it is used as an alkali in sour cream, butter, and canned peas. it is used as an anticaking agent in table salt and dry mixes. it assists in providing clarity in algin gels and functions as a filler in dental impression materials.

Uses

Magnesium salts, heat insulation and refractory, rubber reinforcing agent, inks, glass, pharmaceuticals, dentifrice and cosmetics, free-running table salts, antacid, making magnesium citrate, filtering medium. In foods as drying agent, color retention agent, anticaking agent, carrier.

Definition

The term magnesium carbonate is generally reserved for the synthetic, pure variety. The naturally occurring material is called magnesite.

Magnesium carbonate Preparation Products And Raw materials

Raw materials

Preparation Products


Magnesium carbonate Suppliers

Global( 99)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Jiangsu Kolod Food Ingredients Co.,Ltd.
+86-518-85110578 18805133257
+86-518-85110578 sales3257@jskolod.com CHINA 100 60
Henan DaKen Chemical CO.,LTD.
+86-371-55531817
info@dakenchem.com CHINA 22059 58
Henan Tianfu Chemical Co.,Ltd.
0371-55170693
0371-55170693 info@tianfuchem.com CHINA 20795 55
Mainchem Co., Ltd.
+86-0592-6210733
+86-0592-6210733 sales@mainchem.com CHINA 32764 55
Lianyungang Kexin Chemical Co., Ltd. 18805133257
sales3257@jskolod.com CHINA 85 58
Beijing dtftchem Technology Co., Ltd. 13651141086; 86(10)60275028、60275820
86 (10) 60270825 dtftchem@sina.com China 3433 62
BeiJing Hwrk Chemicals Limted 4006990298;010-57411839;0757-86311057;021-51691807
010-87653215;0757-86311057;021-55236763 sales@hwrkchemical.com China 14616 55
Beijing Ouhe Technology Co., Ltd +86-10-4006331231;+86-10-51280831;+86-10-82967028
+86-10-82967029 sales@ouhechem.com China 12609 60
Secco work (Beijing) chemical technology co., LTD 010-69755668;
010-69755668 1139670422@qq.com China 3626 54
Adamas Reagent, Ltd. 400-600-9262
bxy@titansci.com China 14017 59

View Lastest Price from Magnesium carbonate manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2018-12-14 Magnesium Carbonate
13717-00-5
US $10.00-30.00 / kg 25 kg 99%min 20tons/day Jiangsu Kolod Food Ingredients Co.,Ltd.

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