12057-71-5
magnesium nitride
CAS: 12057-71-5
Molecular Formula: Mg3N2
12057-71-5 - Names and Identifiers
| Name | magnesium nitride |
| Synonyms | MAGNESIUM NITRIDE magnesium nitride trimagnesium dinitride magnesiumnitride(mg3n2) trimagnesium nitrogen(-3) anion |
| CAS | 12057-71-5 |
| EINECS | 235-022-1 |
| InChI | InChI=1/3Mg.2N/q3*+2;2*-3 |
12057-71-5 - Physico-chemical Properties
| Molecular Formula | Mg3N2 |
| Molar Mass | 100.93 |
| Density | 2.71g/mLat 25°C(lit.) |
| Melting Point | 800°C |
| Water Solubility | Reacts with water. |
| Appearance | Powder |
| Specific Gravity | 2.71 |
| Stability | Air sensitive. Incompatible with moisture, strong acids, strong bases. |
| Sensitive | Moisture Sensitive |
| Physical and Chemical Properties | Magnesium nitride, chemical formula Mg3N2. Molecular weight 100.95. It is an inorganic compound composed of nitrogen and magnesium, which belongs to the cubic system. Green-yellow to yellow-orange loose powder. The relative density was 2.71225. Soluble in acid, insoluble in ethanol. 800 C and decomposition in water. Sublimation at 700 °c in vacuum. In air is decomposed into Mg(OH)2 and NH3. Magnesium nitride is a very wide range of applications of inorganic compounds, it can be used for the preparation of high hardness, high thermal conductivity, corrosion resistance, wear resistance and high temperature resistance of other elements of the nitride, the preparation of special ceramic materials, the water content in the alcohol-containing fuel is measured. Mg(NH2)2 can be prepared by reacting magnesium with nitrogen at high temperature, or by passing ammonia into the ether solution of MgEt2, the latter is then heated to red thermal decomposition to yield magnesium nitride. |
12057-71-5 - Risk and Safety
| Risk Codes | R36/37/38 - Irritating to eyes, respiratory system and skin. R14/15 - |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. SNeverusewater. - |
| UN IDs | UN 2813 4.3/PG 1 |
| WGK Germany | 3 |
| TSCA | Yes |
| Hazard Class | 4.1 |
| Packing Group | II |
12057-71-5 - Reference Information
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| Chemical reaction | Magnesium nitride is an ionic compound, and its electronic formula is: Magnesium nitride has a very important property that is the reaction with water, that is, the hydrolysis reaction of magnesium nitride: Mg3N2 6 H2O === 3 Mg(OH)2 2 NH3 ↑ Magnesium nitride, like many metal nitrides, reacts with acids or water-containing non-metallic oxides, ammonium and magnesium salts are generated. |
| production method | magnesium powder reacts with nitrogen at high temperature to produce magnesium nitride. The reaction equation is: 3Mg N2 = Mg3N2 reaction if nitrogen is not pure, it is easy to produce products containing magnesium oxide. The reaction method in dry NH3 gas is better. Place the magnesium chips in a porcelain boat or a sintered magnesium oxide boat. The boat is installed in a porcelain tube. One end of the porcelain tube is connected to a T-shaped tube. One end of the T-shaped tube can be filled with dry ammonia gas, and the other end can be filled with nitrogen gas. The end of the porcelain tube is connected to a U-shaped tube. The tube is equipped with desiccant. One half is small flaky CaO and the other half is small flaky KOH. The gas discharged from the reaction tube is absorbed by the absorption device, which is two conical flasks containing dilute sulfuric acid. To prevent suction, the catheter of the first absorbent bottle should not be inserted below the dilute sulfuric acid level. Dry NH3 and N2 gas is introduced into the porcelain tube until the second absorbent flask no more bubbles are emitted, indicating that the air in the porcelain tube has been cleared. When the temperature is raised to 800~850 ℃ and the magnesium powder is heated for 4 hours, the magnesium powder becomes hot, marking the beginning of the reaction, and H2 must be produced at the same time. During the reaction, the pressure of NH3 should be greater than the external atmospheric pressure to avoid suction. At the end of the reaction, turn off NH3, keep the original temperature and continue to pass N2 for 1.5h to remove NH3 · Mg3N2 adsorbed on Mg3N2. It must be stored in a dry container. |
| category | toxic substances |
| toxicity classification | highly toxic |
| flammability hazard characteristics | toxic and flammable ammonia gas released when exposed to water |
| storage and transportation characteristics | warehouse ventilation and low temperature drying; Separate storage and transportation from acids, water-containing articles and food |
| fire extinguishing agent | sand |
Last Update：2024-04-09 21:21:28
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