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CAS NUMBER: 12125-28-9
EC NUMBER: 235-192-7
MOLECULAR WEIGHT: 337.26
Magnesium Carbonate Hydroxide is a water insoluble Magnesium source that can easily be converted to other Magnesium compounds, such as the oxide by heating (calcination).
Magnesium Carbonate Hydroxide compounds also give off carbon dioxide when treated with dilute acids.
Magnesium Carbonate Hydroxide Pentahydrate is generally immediately available in most volumes.
High purity, submicron and nanopowder forms may be considered.
American Elements produces to many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia) and follows applicable ASTM testing standards.
Typical and custom packaging is available.
Additional technical, research and safety (MSDS) information is available as is a Reference Calculator for converting relevant units of measurement.
Magnesium Carbonate Hydroxide is an inorganic salt that is a white solid.
Several hydrated and basic forms of magnesium carbonate also exist as minerals.
Magnesium Carbonate Hydroxide has unique buffering and neutralization capability.
Magnesium Carbonate Hydroxide has higher decomposition temperature and greater heat absorption.
Magnesium Carbonate Hydroxide is a very finely grounded product having an extremely uniform and narrow particle size distribution as well.
And is considered as an non halogenated, environment friendly and non toxic mineral based flame retardant & smoke suppressant for various plastics & rubber applications.
The effectiveness of flame retardant and smoke suppressant is better than Aluminum Hydroxide.
Magnesium Carbonate Hydroxide has strong reinforcement due to high fineness & the surface is coated specially.
Magnesium Carbonate Hydroxide is a very finely grounded product having an extremely uniform and narrow particle size distribution as well.
And is considered as an non halogenated, environment friendly and non toxic mineral based flame retardant & smoke suppressant for various plastics & rubber applications.
Magnesium Carbonate Hydroxide is a basic hydrated magnesium carbonate or a normal hydrated magnesium carbonate.
Magnesium Carbonate Hydroxide occurs as light, white, friable masses, or as a bulky, white powder.
Magnesium Carbonate Hydroxide is odorless, and is stable in air.
Magnesium Carbonate Hydroxide is practically insoluble in water, to which, however, it imparts a slightly alkaline reaction.
Magnesium Carbonate Hydroxide is insoluble in alcohol, but is dissolved by dilute acids with effervescence.
Magnesium carbonate is a GRAS substance under the provisions of the Code of Federal Regulations as miscellaneous and/or gen eral purpose food additives.
Magnesium carbonate is listed as GRAS substances migrating to food from paper and paperboard products used in food packaging.
As a general purpose food additive, magnesium carbonate is used as alkali in adjusting the acidity of foods.
In addition to the fore going, magnesium carbonate, the most widely used magnesium salt, serves as a drying agent, bleach ingredient, anticaking agent and carrier for other additives. Other uses of magnesium salts include firming agents, lubricants, flavor enhancers, and process ing aids. Pharmaceutically, carbonate is used as antacids.
Magnesium Carbonate Hydroxide is an essential nutrient for plants and animals and is a natural constituent of fruits, vegetables, grain, meats and sea foods.
Magnesium Carbonate Hydroxide is the fourth most abundant cation in the human body and the second most plentiful intracellularly.
The average 60-kg human adult body contains about 24 g magnesium of which about one-half resides in bone.
Although plasma levels vary between 1.7 and 3 .0 mg per dl, very little is contained in extracellular fluid.
Magnesium Carbonate Hydroxide is essential for the production and transfer of energy, for protein, fat, and nucleic acid synthesis, for contractility in muscle and excitability in nerve, and for the activity of numerous enzyme systems.
The main function of adding magnesium hydroxide in rubber and other polymers is neutralization of trace levels of hydrogen chloride, which can be released during processing, vulcanization and thermal aging or maintenance.
Produced according to the required figures in regard to particle size, surface area, porosity and dispersion characteristics magnesium hydroxide reduces main raw stock losses and increases homogeneity of rubber and polymer blends.
Magnesium Carbonate Hydroxide is used practically for all types of plastics and filled copolymer compositions based on PVC, PA PS, PP, PE, PET, EVA IPM etc. as a highly non-toxic, inorganic flame retardant, filler and smoke suppressive additive.
Easy to absorb air carbon dioxide.
In the 350 ℃ is decomposed into magnesium oxide and water.
Higher than 500 ℃ water lost into magnesium oxide.
Synthetic magnesium hydroxide, as an effective halogen-free flame retardant and smoke suppressant, has the following characteristics and advantages:
Inorganic base compound of medium strength.
The chemical formula Mg(ОН)2 Colorless crystals.
At temperatures above 350° C decomposes to water and magnesium oxide.
Absorbs carbon dioxide from the air and water to form a basic magnesium carbonate.
Magnesium hydroxide is almost insoluble in water but soluble in ammonium salts.
White granular powder.
Magnesium Carbonate Hydroxide decomposes at 350°C and loses carbon dioxide at 900°C.
Slightly soluble in cold water, slowly soluble in acid.
Magnesium Carbonate Hydroxides trihydrate is a colorless needle-like crystal with a melting point of 165°C and a relative density of 1.850.
The pentahydrate is a white monoclinic crystal with a relative density of 1.73, which is decomposed by heating in the air.
Carbon dioxide can be added into the magnesium salt aqueous solution while sodium carbonate is added to obtain a hydrate.
The latter can be dried below 50°C to obtain anhydrous.
Magnesium Carbonate Hydroxide has the molecular formula of MgCO3 and the molecular weight of 84.3145 g/mol.
For the most part,Mg2+ forms several hydrated and basic carbonates that are stable and occur in nature.
The calcite structure of magnesium carbonate has the form wherein Mg2+ is surrounded by six O2- atoms.
The dihydrate composition has a triclinic structure, while the trihydrate has a monoclinic structure.
References to “light” and “heavy” magnesium carbonates actually refer to the magnesium hydroxycarbonates.
A space-filling structure of the anhydrous salt is seen in the above diagram where the triangular CO3 2- groups are clearly visible.
Magnesium carbonate (MgCO3) is a white solid, readily found in nature as magnesite and which usually occurs in a hydrated form, clustered with water molecules.
Magnesium Carbonate Hydroxide has some industrial uses, such as in glass production, but some everyday uses as well.
USES:
The primary use of magnesium carbonate is the production of magnesium oxide by calcining.
Magnesite and dolomite minerals are used to produce refractory bricks.
MgCO3 is also used in flooring, fireproofing, fire extinguishing compositions, cosmetics, dusting powder, and toothpaste. Other applications are as filler material, smoke suppressant in plastics, a reinforcing agent in neoprene rubber, a drying agent, a laxative to loosen the bowels, and colour retention in foods. In addition, high purity magnesium carbonate is used as an antacid and as an additive in table salt to keep it free flowing. Magnesium carbonate can do this because it doesn't dissolve in water, only acid, where it will effervesce (bubble).
Climber Jan Hojer blows surplus chalk from his hand. Boulder World Cup 2015
Because of its low solubility in water and hygroscopic properties, MgCO3 was first added to salt in 1911 to make it flow more freely.
The Morton Salt company adopted the slogan "When it rains it pours" with reference to the fact that its MgCO3-containing salt would not stick together in humid weather. Magnesium carbonate, most often referred to as "chalk", is also used as a drying agent on athletes' hands in rock climbing, gymnastics, weight lifting and other sports in which a firm grip is necessary.
As a food additive, magnesium carbonate is known as E504, for which the only known side effect is that it may work as a laxative in high concentrations.
Magnesium carbonate is used in taxidermy for whitening skulls.
Magnesium Carbonate Hydroxide can be mixed with hydrogen peroxide to create a paste, which is then spread on the skull to give it a white finish.
Magnesium Carbonate Hydroxide is used as a matte white coating for projection screens.
Magnesium Carbonate Hydroxide is an anticaking agent and general purpose food additive.
MgCO3 is practically insoluble in water but is more soluble in water containing carbon dioxide.
Magnesium Carbonate Hydroxide is used as an alkali in sour cream, butter, and canned peas.
Magnesium Carbonate Hydroxide is used as an anticaking agent in table salt and dry mixes.
Magnesium Carbonate Hydroxide assists in providing clarity in algin gels and functions as a filler in dental impression materials.
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.
Magnesium carbonate (MgCO3) is found in a mixture of natural minerals.
Magnesium Carbonate Hydroxide can also be produced in several ways, including pumping carbon dioxide through magnesium oxide or magnesium hydroxide.
Magnesium Carbonate Hydroxide is used in pharmaceuticals such as magnesium citrate and as a desiccant to keep hydroscopic products from caking (table salt) and to strengthen rubber and produce dyes, inks, and cosmetics.
MgCO3 is an inorganic salt with chemical name Magnesium Carbonate.
Magnesium Carbonate Hydroxide is also called Magnesite or Hydromagnesite or Barringtonite.
Hydrated forms of magnesite such as di, tri, tetrahydrates are present as minerals.
Magnesium Carbonate Hydroxide acts as a fertilizer and as an antacid.
Magnesium Carbonate Hydroxide is widely used in the manufacturing of materials that are capable of withstanding extremely high temperatures.
Magnesium carbonate is a basic hydrated magnesium carbonate or a normally hydrated magnesium carbonate.
Magnesium Carbonate Hydroxide occurs as light, white, friable masses or as a bulky white powder.
Magnesium Carbonate Hydroxide is odourless and is stable in air.
Magnesium Carbonate Hydroxide is practically insoluble in water to which however it imparts a slightly alkaline reaction.
Magnesium Carbonate Hydroxide is insoluble in alcohol but is dissolved by dilute acids with effervescence.
Hydromagnesite is a white or yellowish or greyish-white or brown coloured compound which is obtained in crystalline powder or crystalline solid form.
Magnesium Carbonate Hydroxide is an important ore for magnesium.
Magnesium Carbonate Hydroxide is a carbonate salt, a one-carbon compound, and a magnesium salt.
Using magnesium hydroxide in polymer compounds is characterized by the following:
-Toxicity and aggressivity of combustion products decrease;
-Magnesium Carbonate Hydroxide becomes possible to produce white compounds without additional colourants;
-uniform particle structure;
-High optical and color characteristics.
-Magnesium carbonate is used in food as a drying agent.
-Used in making pharmaceutical products.
-Used as a rubber reinforcing agent.
-Used in the manufacturing of cosmetics.
-Used as an anti caking agent in food.
-Used as a filtering agent.
-Used as fire-extinguishing.
-Used in printing inks.
Magnesium Carbonate Hydroxide is mainly used in processing magnesium oxide by calcining.
Magnesium Carbonate Hydroxide is used to make refractory bricks.
Magnesium Carbonate Hydroxide is also used in fire extinguishing, flooring, cosmetics, dusting powder, fireproofing, and toothpaste.
Magnesium carbonate, a chemical compound with the formula MgCO3, is not toxic to human beings.
This inorganic salt of magnesium is a white solid under ambient conditions.
Typically, magnesium carbonate is via the mining of the mineral magnesite.
In China, 70 per cent of supply worldwide is mined and prepared.
In the laboratory, magnesium carbonate can be prepared by reaction of any soluble magnesium salt and sodium bicarbonate.
APPLICATION:
-The filler in rubber compounds
-A component for the manufacturing of heat-insulating materials
-Food additive E504 (basic magnesium carbonate)
-Sport magnesium (used for hands drying)
-A component for the production of certain grades of glass, cement, bricks .
-The additive in detergents
-Raw materials for magnesium oxide
-Component for sugar refining
-Component toothpastes
-Medicine for neutralizing the acid in the stomach, as well as a very strong laxative
-Food additive E528
Magnesium Carbonate Hydroxide is especially used in Shampoo and Dry Shampoo.
-Magnesium Carbonate Hydroxide is used in many powdered and cream cosmetic products.
-Magnesium Carbonate Hydroxide is used in Heena Natural Dyes.
PROPERTIES:
Heavy magnesium carbonate is available as granular powder whereas light magnesium carbonate is available as a very light powder.
Both are white, odourless and tasteless.
They are insoluble in water and alcohol and are soluble in mineral acids with effervescence.
When heated they are converted to MgO losing carbon dioxide and water.
CHEMICAL PROPERTIES:
At high temperatures MgCO3 decomposes to magnesium oxide and carbon dioxide.
The decomposition temperature is given as 350 °C (662 °F).
However, calcination to the oxide is generally not considered complete below 900 °C due to interfering readsorption of liberated carbon dioxide.
The hydrates of the salts lose water at different temperatures during decomposition.
Magnesium carbonate, MgC03, is a light, bulky white powder, very slightly soluble in water,loses CO2 even on gentle heating.
Magnesium Carbonate Hydroxide is used extensively in the manufacture of food products, pharmaceuticals, cosmetics, and magnesium salts.
PHYSICAL AND CHEMICAL PROPERTIES:
-Appearance: Powder
-Physical State: Solid
-Storage: Store at room temperature
-Density: 2.16 g/cm3
OCCURENCE:
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.
FORMS:
The most common magnesium carbonate forms are the anhydrous salt called magnesite (MgCO3) and the di, tri, and pentahydrates known as barringtonite (MgCO3·2 H2O), nesquehonite (MgCO3·3 H2O), and lansfordite (MgCO3·5 H2O), respectively.
Some basic forms such as artinite (MgCO3·Mg(OH)2·3 H2O), hydromagnesite (4 MgCO3·Mg(OH)2·4 H2O), and dypingite (4 MgCO3· Mg(OH)2·5 H2O) also occur as minerals.
Magnesite consists of white trigonal crystals. The anhydrous salt is practically insoluble in water, acetone, and ammonia.
All forms of magnesium carbonate react with acids.
Magnesium carbonate crystallizes in the calcite structure wherein Mg2+ is surrounded by six oxygen atoms.
The dihydrate has a triclinic structure, while the trihydrate has a monoclinic structure.
References to "light" and "heavy" magnesium carbonates actually refer to the magnesium hydroxy carbonates hydromagnesite and dypingite (respectively).
PREPARATION:
Magnesium carbonate is ordinarily obtained by mining the mineral magnesite.
Seventy percent of the world's supply is mined and prepared in China.
Magnesium carbonate can be prepared in laboratory by reaction between any soluble magnesium salt and sodium bicarbonate:
MgCl2(aq) + 2NaHCO3(aq) → MgCO3(s) + 2NaCl(aq) + H2O(l) + CO2(g)
If magnesium chloride (or sulfate) is treated with aqueous sodium carbonate, a precipitate of basic magnesium carbonate—a hydrated complex of magnesium carbonate and magnesium hydroxide—rather than magnesium carbonate itself is formed:
5MgCl2(aq) + 5Na2CO3(aq) + 5H2O(l) → Mg(OH)2·3MgCO3·3H2O(s) + Mg(HCO3)2(aq) + 10NaCl(aq)
High purity industrial routes include a path through magnesium bicarbonate, which can be formed by combining a slurry of magnesium hydroxide and carbon dioxide at high pressure and moderate temperature.
SYNONYM:
7760-50-1
E 100 (carbonate)
Magnesium basic carbonate
Tetra(carbonato(2-))dihydroxypentamagnesium
EINECS 231-851-8
Basic magnesium carbonate (4MgCO3.Mg(OH)2)
tetramagnesium;tetracarbonate
Magnesium carbonate hydroxide (Mg5(OH)2(CO3)4)
Magnesium hydroxide carbonate (Mg5(OH)2(CO3)4)
