Lithium amide
Lithium amide
CAS: 7782-89-0
Molecular Formula: H2LiN
Lithium amide - Names and Identifiers
| Name | Lithium amide |
| Synonyms | lithamide Lithamide Lithioamine Lithiumamid Litium amide Aminolithium Lithium amide lithium azanide Lithium amide (Li(NH2)) Lithiumamideoffwhitepowder LITHIUM AMIDE FOR SYNTHESIS methanamine, monolithium salt |
| CAS | 7782-89-0 |
| EINECS | 231-968-4 |
| InChI | InChI=1/CH5N.Li/c1-2;/h2H2,1H3 |
| InChIKey | AFRJJFRNGGLMDW-UHFFFAOYSA-N |
Lithium amide - Physico-chemical Properties
| Molecular Formula | H2LiN |
| Molar Mass | 22.96 |
| Density | 1.178g/mLat 25°C(lit.) |
| Melting Point | 373 °C |
| Boling Point | 430 °C |
| Water Solubility | reacts |
| Solubility | Slightly soluble in ethanol and liquid ammonia. Insoluble in anhydrous ether, benzene and toluene. |
| Appearance | Powder |
| Specific Gravity | 1.178 |
| Color | off-white |
| Merck | 14,5522 |
| Storage Condition | water-free area |
| Sensitive | Air & Moisture Sensitive |
| Refractive Index | 1.178g/mL |
| Physical and Chemical Properties | Flammable in case of open flame and high heat. Contact with acid or acid gas and oxidizing substances, can occur strong chemical reaction and produce high heat. The reaction with water or water vapor gives off a toxic or flammable gas. Combustion (decomposition) product: ammonia. |
Lithium amide - Risk and Safety
| Risk Codes | R14/15 - R29 - Contact with water liberates toxic gas R34 - Causes burns R20/21/22 - Harmful by inhalation, in contact with skin and if swallowed. R15 - Contact with water liberates extremely flammable gases R14 - Reacts violently with water R11 - Highly Flammable |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S43 - In case of fire use ... (there follows the type of fire-fighting equipment to be used.) S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S7/8 - S43B - S16 - Keep away from sources of ignition. S3/7/9 - |
| UN IDs | UN 1390 4.3/PG 2 |
| WGK Germany | 2 |
| RTECS | OJ5590000 |
| TSCA | Yes |
| HS Code | 28530090 |
| Hazard Class | 4.3 |
| Packing Group | II |
Lithium amide - Reference Information
| LogP | 0.23 at 25℃ |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Overview | lithium amide appearance is white luster crystal or powder, melting point 390 ℃, density 1.78g/cm3, insoluble in kerosene, soluble in liquid ammonia, soluble in cold water and hot water is strongly hydrolyzed. Lithium amide is mainly used in organic synthesis and drug manufacturing, and lithium hydride and lithium imino are good hydrogen storage materials. |
| Performance | LiNH2 irreversibly releases NH3 near its melting point at 374 ℃, making it unsuitable for hydrogen storage materials, therefore, it has not been studied as a hydrogen storage material at first. However, it can effectively inhibit the release of ammonia after compound with LiH, and has good reversibility. Therefore, LiNH2 is not itself as a hydrogen storage material, instead, a composite system composed of LiH or other hydrogen storage materials can be considered as a hydrogen storage material. |
| Application | organic synthesis of condensation promoters, reducing agents, dehydrating agents, desiccants, dehalogenating agents, alkylating agents, aminolysis reactants, it is also used as an initiator for the anionic polymerization of ethylene compounds, and can also be used for the production of azide compounds, cyanide compounds. In the pharmaceutical industry as a synthetic catalyst for vitamin A, vitamin D3 and anti-AIDS drugs, antioxidant 1010, 1076 production as efficient catalyst for the alkylation of nitrile and ketone. Organic synthesis of ethynyl compounds. |
| Applications | lithium amino acid is mainly used in organic synthesis and pharmaceutical manufacturing, lithium iminoids are excellent hydrogen storage materials for the alkylation of nitriles and ketones. Organic synthesis of ethynyl compounds |
| production method | 1. A relatively large amount of lithium amide can be obtained by heating metallic lithium in ammonia gas. The metal lithium is installed in a slender tank made of nickel, the nickel tank is placed in a glass tube, the tube is inclined in an electric furnace, the furnace is heated to 380~400 ° C, and ammonia gas is introduced from one end of the tube, the molten lithium amide flows from the other end and solidifies in the cooled portion of the reaction tube. In this way, the metallic lithium can continuously expose a fresh surface, which ensures that the reaction proceeds continuously. 2. The Two nickel crucibles are stacked up and down and placed in an upright glass tube. At the bottom of the upper nickel crucible, three small holes of 1 × 5mm are drilled. When heated to 400 ° C. In the flow of ammonia, the molten lithium amide can be continuously dropped into the lower crucible, and cooled and solidified in a stream of ammonia. Properties lithium amide is a colorless, transparent and glossy crystal. The relative density of 1.178(17.5 deg C). The melting point was 380-400 °c. When heated to 450 °c in vacuum, ammonia gas can be decomposed and lithium iminoids can be generated. Li2NH is decomposed into Li and NH3 at 750~800 |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 21:04:16
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