Magnesium carbonate tetrahydrate
Magnesium carbonate tetrahydrate
CAS: 39409-82-0
Molecular Formula: CH6Mg2O5
Magnesium carbonate tetrahydrate - Names and Identifiers
| Name | Magnesium carbonate tetrahydrate |
| Synonyms | Magnesium carbonate tetrahydrate MAGNESIUMCARBONATEBASIC,HEAVY,FCC MAGNESIUMCARBONATEBASIC,LIGHT,FCC magnesium carbonate hydrate, puratronic magnesium carbonate tetrahydrate, reagent grade |
| CAS | 39409-82-0 |
| EINECS | 609-673-0 |
| InChI | InChI=1/CH2O3.2Mg.2H2O/c2-1(3)4;;;;/h(H2,2,3,4);;;2*1H2/q;2*+2;;/p-4 |
| InChIKey | LMMTXHUCDIPKDU-UHFFFAOYSA-J |
Magnesium carbonate tetrahydrate - Physico-chemical Properties
| Molecular Formula | CH6Mg2O5 |
| Molar Mass | 146.66 |
| Density | 2.16 |
| Boling Point | 333.6°C at 760 mmHg |
| Flash Point | 169.8°C |
| Water Solubility | Soluble in water. Insoluble in ethanol. |
| Vapor Presure | 2.58E-05mmHg at 25°C |
| Appearance | Solid |
| Color | White |
| Merck | 14,5660 |
| Storage Condition | 2-8°C |
| Physical and Chemical Properties | This product is a white monoclinic crystal with a relative density of 2.254. Slightly soluble in water, soluble in dilute acid, acid foaming decomposition release carbon dioxide, heating and calcination of magnesium oxide and carbon dioxide. |
Magnesium carbonate tetrahydrate - Risk and Safety
| Safety Description | S22 - Do not breathe dust. S24/25 - Avoid contact with skin and eyes. |
| WGK Germany | 3 |
| RTECS | FG1797000 |
| TSCA | Yes |
| HS Code | 28369910 |
Magnesium carbonate tetrahydrate - Nature
Open Data Verified Data
due to the different conditions of crystallization, the product is divided into light and heavy, generally light. Including: light weight Mg-C03-H20. Heavy 5mg c03-mg (OH)2-3HzO, 5mg c03-2mg (OH)z.7H20,4mg c03.mg (OH) and 3mg OI-D2.42O Mg (OH). At room temperature for three water salt. Light weight is white friable block or loose white powder. Odorless. The relative density was 2.2. Melting point 350 °c. Stable in air. Heated to 700 ° C decomposition of carbon dioxide, magnesium oxide. Practically insoluble in water, but in water causes a light alkaline reaction. Insoluble in ethanol, can be dissolved in dilute acid and foam.
Last Update：2025-06-10 22:55:16
Magnesium carbonate tetrahydrate - Preparation Method
Open Data Verified Data
magnesium oxide was obtained by mixing magnesite (MgC03) with coke and then roasting, and CO2 was introduced into the solution to obtain magnesium bicarbonate. After filtration, the filtrate was heated to obtain a basic carbonate precipitate. Alternatively, dolomite (mgco3. cac03) is used as a raw material, and is obtained by processing and refining. Alternatively, an equal amount of crystalline magnesium sulfate and crystalline sodium carbonate may be dissolved in water, heated until sufficiently mixed to produce a precipitate while producing CO2 gas, filtered to remove the precipitate, and the resulting precipitate may be purified.
Last Update：2025-06-10 22:55:16
Magnesium carbonate tetrahydrate - Application
Open Data Verified Data
flour treatment agent, pectin base agent, alkaline agent, desiccant, color fixative, anti-caking agent, leavening agent and acidity regulator. Can be used for table salt, sugar, acidified cream, milk, ice cream, biscuits. China's provisions can be used as flour treatment agent, the maximum use of 5. og/kg; In wheat flour, the maximum use of 11 5g/kg (flour).
Last Update：2025-08-19 16:24:40
Magnesium carbonate tetrahydrate - Safety
Open Data Verified Data
ADI does not specify (FAO/WHO, 2000)aGRAS (FDA,& sect;182, 1425,2000). This product should be stored in a dry and ventilated warehouse to prevent moisture and heat. When loading and unloading, it should be light and light to prevent damage to the package.
Last Update：2025-06-10 22:55:16
Magnesium carbonate tetrahydrate - Reference Information
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| identification test | solubility is almost insoluble in water; Insoluble in ethanol. Measured according to OT-42 method. The slurry is weakly alkaline. When dilute hydrochloric acid test solution (TS-117) is added, the bubble is dissolved, and the magnesium test (IT-21) of the solution is positive. |
| content analysis | method is the same as "magnesium carbonate (05105). accurately weigh about 1g of sample, dissolve in 30.0 mL1mol/L sulfuric acid, and add several drops of methyl orange test solution (TS-148). Excess acid was titrated with 1mol/L sodium hydroxide. Subtract the volume of 1mol/L sulfuric acid equivalent to the calcium oxide content (see mass index) in the sample from the volume of 1mol/L sulfuric acid consumed, and the difference is equivalent to the volume of 1mol/L sulfuric acid contained in magnesium oxide. 1mol/L sulfuric acid per ml is equivalent to MgO20.16 mg or CaO28.04 mg. |
| toxicity | ADI does not make special regulations (FAO/WHO,2000). GRAS(FDA,§ 182.1425,2000). It has an acid-inhibiting effect on the stomach (2g/day). Taking it at 8g/day will cause diarrhea. ADI does not make special regulations (FAO/WHO,2001). GRAS(FDA,§ 184.1425,2000). |
| use limit | FAO/WHO(1984): milk powder 10 g/kg (for vending machines only); 1000 mg/kg of cream powder (for vending machines only); Powder glucose, sugar powder 15 g/kg (starch is not allowed); cocoa powder and sugary cocoa powder, cocoa bean powder, cocoa liquid and cocoa oil cake 5 g/kg (in terms of fat-free cocoa part, in terms of K2CO3). GB 2760-2002(g/kg): Wheat flour 1.5; Flour treatment agent 5.0; Gum sugar base GMP; Cocoa powder solid beverage 10 (used as anti-caking agent). no restrictive regulations (GMP)(FDA,§ 184.1425,2000). |
| use | mainly used as filler and reinforcing agent for transparent or light-colored rubber products, and can enhance the abrasion resistance, bending resistance and tensile strength of rubber. It can also be used as additives for paints, graphite and coatings, and can also be used in toothpaste, medicine and cosmetics industries. |
| production method | bitter brine-soda ash method uses bitter brine or brine and soda ash as raw materials. Bitter halogen is added to the reactor, and then soda ash is added under constant stirring. After the reaction is completed, vacuum suction filtration is carried out, then centrifugal dehydration is carried out, and finally the product is obtained by centrifugal separation, drying, crushing, screening and packaging. |
Last Update：2024-04-10 22:29:15
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