Acidity Adjustment, Desiccant, High Quality, Magnesium Carbonate

• CAS No.: 39409-82-0
• Formula: Mgco3·Ymg(Oh) 2·Nh2o
• Classification: Inorganic Analytical Reagents
• Grade: AR
• Specific Usage: For Biological Purpose, For Microbiological, For Lens Blooming, Technical Grade, For Synthesis, For Refractive Index
• Content: Standard
• Usage: Laboratory Reagents, Analytical Reagents, Diagnostic Reagents, Teaching Reagents
• Source: Dry Powder
• Habit Appellation: Chemical Medicine
• Application: Scientific Research, Health, Environmental Protection, Agriculture
• Property: Inorganic Reagent
• Transport Package: Drum
• Specification: 98%
• Origin: China

Product Description

1. Chemical name: magnesium carbonate, basic magnesium carbonate

2. Molecular formula: xMgCO3·yMg(OH) 2·nH2O

3. Molecular weight:----

4. CAS: 39409-82-0

5. Properties: It is trihydrate salt at room temperature. It is light in the form of white brittle blocks or loose white powder. Odorless. Relative density 2.2. Melting point 350ºC. Stable in air. When heated to 700°C, carbon dioxide is generated and magnesium oxide is produced. Almost insoluble in water, but causes a slight alkaline reaction in water. Insoluble in ethanol, can be dissolved by olefinic acid and foamed.

6. Usage: alkaline agent; desiccant; color-protecting agent; anti-caking agent; carrier; leavening agent; acidity regulator.

7. Packaging: Net weight 25kg, composite kraft paper bag lined with PVC bag;

8. Storage and transportation: It should be stored in a cool, dry, ventilated and clean warehouse, packed with care to prevent moisture and heat. During transportation, it should be protected from rain and moisture, and should be isolated and stacked away from toxic substances.







 

Items	Index
	Super quality	First quality	Second quality
MgO  %≥	45.0	41.0	38.0
Sulphate(based on SO4) ≤	0.1	0.15	0.3
Calcium Oxide(as CaO )%≤	0.43	0.7	1.0
Loss on ignition%	54-58	54-58	>52
Chloride(based on Cl) ≤	0.1	0.15	0.3
Content(based on Mn) ≥	0.004	0.004	----
Fluoride (as F) %≤	0.02	0.05	0.08
Water contents%≤	2.0	3.0	4.0
Bulk density g/ml	0.12	0.14	----
Residues(150um)%≤	0.025	0.03	0.05

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.