MAGNESIUM CARBONATE
Magnesium Carbonate
CAS: 546-93-0;13717-00-5
Molecular Formula: CMgO3
MAGNESIUM CARBONATE - Names and Identifiers
MAGNESIUM CARBONATE - Physico-chemical Properties
| Molecular Formula | CMgO3 |
| Molar Mass | 84.31 |
| Density | 3.050 |
| Melting Point | 990°C |
| Boling Point | 76℃ 0,09mm |
| Water Solubility | g MgCO3/100g solution at CO2 pressure, kPa, 18°C: 3.5 (203), 4.28 (405), 5.90 (1010), 7.49 (1820), 7.49 (5670); at 0°C 8.58 (3445), at 60°C 5.56 (3445); soluble acids; insoluble alcohol [HAW93] [KIR81 |
| Solubility | Practically insoluble in water. It dissolves in dilute acids with effervescence. |
| Appearance | White crystalline powder |
| Color | White |
| Storage Condition | Room Temprature |
| MDL | MFCD00002425 |
| Physical and Chemical Properties | White friable block or white loose powder, odorless. The relative density of 22, the melting point of 350. Soluble in dilute acid solution, almost insoluble in water, water solution is slightly alkaline, insoluble in ethanol. Stable in air, it decomposes to form magnesium oxide when heated to 700 °c. ADI is not specified (FAO/WHO,1994). |
| Use | Used in the manufacture of magnesium salt, magnesium oxide, fire retardant coating, ink, glass, toothpaste, rubber filler, etc., used in food flour improver, bread leavening agent |
MAGNESIUM CARBONATE - Risk and Safety
| Safety Description | S24/25 - Avoid contact with skin and eyes. S22 - Do not breathe dust. |
| RTECS | OM2470000 |
| HS Code | 28369910 |
MAGNESIUM CARBONATE - Upstream Downstream Industry
MAGNESIUM CARBONATE - Nature
Open Data Verified Data
white granular powder. Odorless and tasteless. Insoluble in water and ethanol.
Last Update：2025-06-10 22:55:16
MAGNESIUM CARBONATE - Preparation Method
Open Data Verified Data
The fine ceramic magnesium carbonate can be obtained in a magnesium-containing aqueous solution by a high-pressure carbon dioxide carbonation reaction, filtration, drying and crushing.
Last Update：2025-06-10 22:55:16
MAGNESIUM CARBONATE - Application
Open Data Verified Data
anti-acid and anti-ulcer drugs. For the treatment of gastric and duodenal ulcers.
Last Update：2025-08-19 16:24:40
MAGNESIUM CARBONATE - Reference Information
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| overview | magnesium carbonate (Magnesium carbonate), molecular weight 84.31. White granular powder. Decomposes at 350 ℃ and loses carbon dioxide at 900 ℃. Slightly soluble in cold water, slowly soluble in acid. Its trihydrate is a colorless needle-like crystal with a melting point of 165 ℃ and a relative density of 1.850. Its pentahydrate is a white monoclinic crystal with 1.73 relative density and is heated and decomposed in air. You can pass carbon dioxide into the magnesium salt aqueous solution while adding sodium carbonate to obtain hydrate, and the latter can be dried below 50°C to obtain anhydrous. magnesium carbonate is used to make magnesium salt, magnesium oxide, fire retardant coating, ink, glass, toothpaste, rubber filler, etc. |
| identification method | take 0.2g of magnesium carbonate and gradually add dilute hydrochloric acid solution (1 3)mL, dissolve and bubble. Add ammonia solution (40mL of ammonia water and 100mL of water) to make it alkaline, and the solution reacts with magnesium salt. magnesium salt reaction: ammonium chloride solution (110) and ammonium carbonate solution (20g dissolved in 20mL of ammonia solution and 100mL of water) are added to the above solution without precipitation. then disodium hydrogen phosphate solution (18) is added to produce white crystalline precipitation, which is insoluble when ammonia solution is added to the collected precipitation. |
| application field | magnesium carbonate is often used as an additive in pharmaceutical intermediates, acid solution, desiccant, color protection agent, carrier and anti-caking agent. As an additive and magnesium element compensation agent in food; Used in fine chemical industry to produce chemical reagents; As a reinforcing agent and filler in rubber; Can be used as heat insulation, high temperature resistant fireproof and heat preservation materials; important chemical raw materials in the manufacturing process of wires and cables. Manufacture of high-grade glass products; enamel ceramics have a bright surface effect; make magnesium salt, pigments, paints, daily cosmetics, shipbuilding, boiler manufacturing, and the coating industry is used as a filler for accessory pigments, paints, and inks, which can increase whiteness and hiding power And athletes use to wipe their hands in competitions. |
| use | China stipulates that it can be used as flour treatment agent with a maximum usage of 5.0 g/kg; The maximum usage in wheat flour is 1.5 g/kg (in flour). used to manufacture drugs for neutralizing gastric acid and treating duodenal ulcer used in medicine and rubber industry used to manufacture magnesium salt, magnesium oxide, fire retardant coating, ink, glass, toothpaste, rubber filler, etc., used as flour improver, bread leavening agent, etc. in food |
| production method | dissolve the same amount of crystalline magnesium sulfate and sodium carbonate in 10 times the amount of water respectively, and heat to 60~80 ℃ to fully mix to generate precipitate while generating CO2; Filter out the precipitate, fully mix and wash with 70~80 ℃ hot water; Finally, the product is dried at 50~60 ℃. MgSO4 Na2CO3→Na2S04 MgCO3↓ |
| category | toxic substances |
| flammability hazard characteristics | non-combustible; toxic magnesium compound smoke from the fire site |
| storage and transportation characteristics | warehouse low temperature, ventilation, drying |
| fire extinguishing agent | water, carbon dioxide, dry powder, sand |
| occupational standard | TWA 10 mg/m3 |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 15:16:51
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Raw Materials for MAGNESIUM CARBONATE
Downstream Products for MAGNESIUM CARBONATE