mannesium carbonate,basic
Artinite
CAS: 12143-96-3
Molecular Formula: C2H2MgO6
mannesium carbonate,basic - Names and Identifiers
mannesium carbonate,basic - Physico-chemical Properties
| Molecular Formula | C2H2MgO6 |
| Molar Mass | 146.34 |
| Density | 2.039 [KIR81] |
| Melting Point | residual solvents, complies |
| Storage Condition | RT, sealed |
| Sensitive | Easily absorbing moisture |
| MDL | MFCD00011107 |
| Physical and Chemical Properties | White monoclinic crystalline or amorphous powder. The composition is generally expressed as xMgCO3. yMg(OH)2. zH2O. There are several proportions of x, y and z, which can be 4:1:4,4:1:5,4:1:6,4:1:7,3:1:3,3:1:4. Non-toxic, no chemical book flavor, stable in the air. The relative density was 2.16. Slightly soluble in water, the aqueous solution is weak alkaline. The solubility in water was 0.02%(15 °c). Soluble in acid and ammonium salt solution, in the case of dilute acid decomposition of carbon dioxide. When heated above 300 °c, it decomposes to produce water, carbon dioxide, and magnesium oxide. |
| Use | Use as an excellent filler and reinforcing agent for rubber products. Can be used as thermal insulation, high temperature fire insulation material. Asbestos light magnesium carbonate is an excellent insulating material used in shipbuilding and boiler manufacturing sectors. It can also be used in the manufacture of advanced glass products, magnesium salts, pigments, paints and household chemicals. It is used as an antacid in medicine. It can also be used as desiccant, color fixative, carrier and anti-caking agent. |
mannesium carbonate,basic - Formation process of Basic Magnesium carbonate and control of magnesium oxide content
Author:
Zhu Guocai , Guangzhou Meng , original shaang
Abstract:
The Basic Magnesium carbonate was prepared by ammonium bicarbonate precipitation method with magnesium sulfate solution which was obtained from the light-burned magnesium powder obtained by the calcination of magnesium ore, products with different molecular structures were obtained, and the molecular formula of the product obtained at 60-90 ℃ can be expressed as Mg5(CO3)4(OH)2 · 8H2O, the molecular formula of the product obtained by pyrolysis above 95 ℃ is Mg5(CO3)4(OH)2 · 4H2O. In this study, by adding a certain amount of ammonia in the precipitation process, to achieve the purpose of controlling the content of magnesium oxide products, at 60 ℃, the pyrolysis of magnesium oxide products was 43.5%, at the same time, the precipitation rate of magnesium sulfate solution is more than 88%. In addition, the surface morphology of the products under different preparation conditions is observed by scanning electron microscope, it is found that the product obtained at 60-90 ℃ is whisker-type crystal, and the product obtained by pyrolysis above 95 ℃ is flaky crystal, and ammonia water is added in the precipitation process, the product obtained by pyrolysis at 60 ° C. Is a crystal mixed with whiskers and flakes.
stowed
Key words:
magnesium carbonate; Magnesium oxide content; Control
DOI:
10.3969/j.issn.1000-8098.2002.03.005
cited:
year:
2002
Last Update：2024-01-02 23:10:35
mannesium carbonate,basic - Application and synthesis of Basic Magnesium carbonate
from hownet
Author:
Abstract:
The main synthesis methods and applications of Basic Magnesium carbonate at home and abroad are introduced, and some problems existing in it are discussed, so as to provide a way for the development and utilization of magnesium resources in Salt Lake.Key words:
Basic Magnesium carbonate synthesis method apply
DOI:
10.3969/j.issn.1008-858X.2005.02.008
cited:
year:
2005
Last Update：2023-08-16 22:05:47
mannesium carbonate,basic - Introduction
It can become magnesium oxide at about 700 ℃, almost insoluble in water, soluble in about 3,330 parts of water without carbon dioxide, soluble in acid to release carbon dioxide, insoluble in alcohol.
Last Update：2022-10-16 17:30:38
mannesium carbonate,basic - Study on preparation of food-grade Basic Magnesium carbonate by brine-soda ash method
from titanium academic
Author:
Shu Yong , Song Jianhua , Li Debo
Abstract:
1 preface China is rich in marine resources, the output of sea salt ranks first in the world, and 1t of raw salt and by-product bitter brine 0. About 7 m3, which contains a lot of Mg2 +,K +,Cl-· SO2 -4 Plasma, therefore, the comprehensive utilization of bitter halogen, the development of new products, not only has economic benefits, and it has more important social and environmental benefits. The production of food-grade Basic Magnesium carbonate by using bitter halogen has not been reported in our country. With the improvement of people's living standard and the rapid development of food industry, it is imperative to develop the product. In the scientific formula of flour improver, Basic Magnesium carbonate is an important auxiliary ingredient. Its main function is to improve the dispersibility and fluidity of flour improver, which is an anti-caking agent, in general, the content of flour improver is 10% ~ 15%. In view of the above characteristics, the product must be non-toxic, tasteless, harmless
Key words:
bitter halogen soda ash Basic Magnesium carbonate
DOI:
10.3969/j.issn.1673-6850.2000.02.008
cited:
year:
2000
Last Update：2023-08-16 22:05:47
mannesium carbonate,basic - Study on the precursor state of Basic Magnesium carbonate
from Wanfang
Author:
Abstract:
The formation mechanism of Basic Magnesium carbonate prepared by carbonation method and soda ash method was studied. It was found that there was a precursor state of Basic Magnesium carbonate Mg(CO3)4(OH)2 · 4H2O. Using chemical analysis, IR,XRD to study it, found that the former Fengtai area phase is Mg5(CO3)4(OH)2 · 8H2O instead of the reported Mg5(CO3)4(OH)2 · 5H2O, the difference is that it contains more water molecules.
Key words:
Basic Magnesium carbonate precursor state magnesium carbonate Formation Mechanism XRD IR
DOI:
CNKI:SUN:HXSJ.0.1999-03-003
cited:
year:
1999
Last Update：2023-08-16 22:05:47
mannesium carbonate,basic - Introduction
Artinite, chemical formula Mg(HCO3)2, is a white powdery solid. The following is an introduction to the nature, use, formulation and safety information of Artinite:
Nature:
1. Artinite is a weak alkaline substance, soluble in acid.
2. Stable in the air and not susceptible to moisture.
3. With expansion properties, can be decomposed at high temperature.
Use:
1. Artinite is commonly used as an electrolyte for advanced batteries, a lead salt additive, and a component of silicate refractory materials.
2. Artinite is also used as a preparation intermediate in the preparation of other magnesium compounds.
Preparation Method:
1. Artinite can be obtained by the reaction of radioactive limestone and magnesium oxide.
2. The reaction equation is: MgO CO2 H2O → Mg(HCO3)2.
Safety Information:
1. Artinite has no obvious toxicity to human body, but it is still necessary to avoid direct contact with skin and eyes.
2 in the use of the process should pay attention to avoid inhalation of dust, such as accidentally inhaled, Please quickly move the patient to fresh air, and immediately seek medical attention.
3. In the storage process, should avoid contact with acids, oxidants and combustibles, stored in a dry, well-ventilated place.
Nature:
1. Artinite is a weak alkaline substance, soluble in acid.
2. Stable in the air and not susceptible to moisture.
3. With expansion properties, can be decomposed at high temperature.
Use:
1. Artinite is commonly used as an electrolyte for advanced batteries, a lead salt additive, and a component of silicate refractory materials.
2. Artinite is also used as a preparation intermediate in the preparation of other magnesium compounds.
Preparation Method:
1. Artinite can be obtained by the reaction of radioactive limestone and magnesium oxide.
2. The reaction equation is: MgO CO2 H2O → Mg(HCO3)2.
Safety Information:
1. Artinite has no obvious toxicity to human body, but it is still necessary to avoid direct contact with skin and eyes.
2 in the use of the process should pay attention to avoid inhalation of dust, such as accidentally inhaled, Please quickly move the patient to fresh air, and immediately seek medical attention.
3. In the storage process, should avoid contact with acids, oxidants and combustibles, stored in a dry, well-ventilated place.
Last Update：2024-04-10 22:29:15
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Tel: 0086-551-65418684
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