Sodium amide
Sodium amide
CAS: 7782-92-5
Molecular Formula: H2NNa
Sodium amide - Names and Identifiers
| Name | Sodium amide |
| Synonyms | Sodamide SODAMIDE Sodium amide SODIUM AMIDE sodium azanide sodiumamide(na(nh2)) sodium amide,sodamide SODIUM AMIDE, CRYSTALLINE SODIUM AMIDE, HYDROGEN STORAGE GRADE |
| CAS | 7782-92-5 |
| EINECS | 231-971-0 |
| InChI | InChI=1/H2N.Na/h1H2;/q-1;+1 |
Sodium amide - Physico-chemical Properties
| Molecular Formula | H2NNa |
| Molar Mass | 39.01 |
| Density | 1.39 g/cm3 (25℃) |
| Melting Point | 210 °C (lit.) |
| Boling Point | 400 °C (lit.) |
| Flash Point | 85°F |
| Water Solubility | REACTS VERY VIOLENTLY, EVEN EXPLOSIVELY |
| Vapor Presure | 5990mmHg at 25°C |
| Appearance | crystalline |
| Color | Greyish white powder |
| Odor | Ammonia like |
| Merck | 14,8576 |
| Storage Condition | Store below +30°C. |
| Stability | Stability Flammable. Reacts violently with water producing very toxic fumes. In case of fire do not use water, but instead smother with soda ash. May form explosive peroxides if heated, or if stored f |
| Sensitive | Air & Moisture Sensitive |
| Physical and Chemical Properties | Olive green crystalline substance. Melting Point 210 °c, boiling point 400 °c, in aqueous solution into sodium hydroxide and ammonia. Decomposition to sodium, nitrogen, hydrogen and ammonia by heating to 300-330 °c in vacuum. |
| Use | For the production of sodium cyanide, organic synthesis and pharmaceutical manufacturing |
Sodium amide - Risk and Safety
| Risk Codes | R14/15 - R19 - May form explosive peroxides R34 - Causes burns R20/21 - Harmful by inhalation and in contact with skin. R10 - Flammable R67 - Vapors may cause drowsiness and dizziness R65 - Harmful: May cause lung damage if swallowed R63 - Possible risk of harm to the unborn child R48/20 - R11 - Highly Flammable R36/37 - Irritating to eyes and respiratory system. R15/29 - R14 - Reacts violently with water R50 - Very Toxic to aquatic organisms R29 - Contact with water liberates toxic gas |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 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.) S62 - If swallowed, do not induce vomitting; seek medical advice immediately and show this container or label. S7/8 - S43D - S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S27 - Take off immediately all contaminated clothing. S16 - Keep away from sources of ignition. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. |
| UN IDs | UN 3129 4.3/PG 2 |
| WGK Germany | 2 |
| FLUKA BRAND F CODES | 3-10-23 |
| TSCA | Yes |
| HS Code | 2853 90 90 |
| Hazard Class | 4.3 |
| Packing Group | II |
Sodium amide - Upstream Downstream Industry
| Downstream Products | 2-Aminopyridine |
Sodium amide - Nature
Open Data Verified Data
White to olive-green crystalline powder, which is monoclinic crystal. Relative density 1- 40. Melting Point 210 °c. Boiling point 400 °c. Unstable in air, easy to oxidation. Heating oxidation of sodium hydroxide, sodium nitrite and ammonia. Decomposition begins at 400 ℃, and rapidly decomposes at 500-600 ℃. Deliquescence, and water intense reaction to generate ammonia and sodium hydroxide. Decomposition in hot alcohol. Decomposition to nitrogen, sodium, hydrogen and ammonia was achieved by heating to 300-330 °c in a vacuum. Toxic! Flammable and explosive. Corrosive.
Last Update：2024-01-02 23:10:35
Sodium amide - Preparation Method
Open Data Verified Data
- high temperature method: sodium metal is melted at 97~100 ℃, dehydrated liquid ammonia is slowly introduced, and the reaction is carried out at 350 ~ 360℃ to form sodium amino acid and hydrogen, and the reaction time is 6.5 hours, when it was checked that there was no metallic sodium present, the ammonia flux was stopped and the reaction was completed. After the reaction, it was cooled, condensed into thin slices, and then crushed to obtain sodium amino acid product, which was vacuum packed.
- low-temperature synthesis: the raw material is the same as the high-temperature method, and the reaction temperature is -30 ° C., which is synthesized in the presence of a metal catalyst.
Last Update：2022-01-01 11:06:49
Sodium amide - Use
Open Data Verified Data
as a condensation promoter in organic chemical reactions. Is the raw material for the synthesis of vitamin A. It is also used as a dehydrating agent, a dehalogenating agent, an alkylating agent, and an ammoniating agent. Dissociation of NH2 ions in liquid ammonia serves as an initiator for anionic polymerization to produce polyvinyl chloride. Also used in the manufacture of azide compounds, cyanide, indigo and hydrazine, as well as vitamin A and pharmaceutical synthesis of raw materials.
Last Update：2022-01-01 11:06:48
Sodium amide - Safety
Open Data Verified Data
its dust toxic; Can cause corrosive burns, can seriously stimulate the eyes, skin and respiratory system. Production methods listed in this product, by-products of hydrogen and industrial wastewater. Hydrogen can be recovered and burned; For industrial wastewater, it can be treated. Strict management, civilized production, basically no other three wastes emissions. The hazard belongs to class I flammable solid, GB 12268-90-43051, 61520 UN NO. 2813, 3086, 2811. Packed in a two-layer polyethylene plastic bag (230 × 230 × 250) Cm3 square box with resin cover, with a net weight of 10kg per box. Or packed in an iron drum lined with polyethylene plastic bags, with a net weight of 20kg and 50kg per drum, etc. Outside the package, there shall be clearly marked_wet flammable solid-"toxic" text and icons, as well as the provisions of the goods must be written description. Store in a cool, dry warehouse. Should avoid contact with air, water, fire, in order to avoid explosion and fire. It should be kept in a closed form and protected from moisture. Storage time should not be too long. Handling is to be careful to handle, so as not to damage the package. Cover with tarpaulin during transportation in case of sun and rain. Hazards and protection: the dust is toxic. When disposing of the escaping materials, wear a gas mask and gloves, mix with dry sand and send it to an open place. After reacting with a large amount of water, put it into the wastewater system. The contaminated ground should also be washed with water, skin contact, eye irritation, should be immediately washed with water; Wrong in the mouth, should immediately gargle, drinking water and vinegar or 1% acetic acid, then the patient was sent to the hospital for treatment. After working in a high dust environment, take a bath and change clothes, store protective equipment separately, and often change. In case of fire, it can be controlled by dry sand, dry powder, carbon dioxide fire extinguishing or asbestos cloth.
Last Update：2022-01-01 11:06:50
Sodium amide - Reference Information
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| quenching method | post-treatment is that if the amount is not large, it can be directly quenched with water. If the amount is large, water is slowly added dropwise. This was suspended in dry tetrahydrofuran and ethanol or isopropanol was added slowly with stirring until no more hydrogen was evolved and the mixture was clear. |
| Chemical properties and main uses | sodium amide, also known as sodium amide or sodium ammonia, is white or olive green crystalline powder, has an ammonia flavor, chemical formula NaNH2, molecular weight 39.01, melting point of 210 °c, boiling point of 400 °c. Decomposition to sodium, nitrogen and hydrogen occurs when heated to 500-600 °c. With the intense effect of water, the generation of sodium hydroxide, and the release of ammonia. Slightly soluble in liquid ammonia, with a slower role of alcohol. Rapid absorption of carbon dioxide and water in air should be sealed for storage. Liquid can dissolve metal magnesium, zinc, molybdenum, tungsten and quartz, glass, silicate and other substances. An ionic compound consisting of a monovalent group of-amino NH-2, formed by the removal of a hydrogen atom from a sodium ion and an ammonia molecule. Sodium amino is flammable, explosive, corrosive and deliquescent. Since the amino group has a lone electron pair, it is easy to bind protons, so it is strongly hydrolyzed by water, and its aqueous solution is alkaline: NaNH2 H2O = NaOH NH3. Soluble in liquid ammonia and hot ethanol. The dust was toxic. Severe irritation of the skin, eyes and respiratory system. After contact with the skin can cause corrosive burns. It is used as an ammoniating agent in organic synthesis; A condensation accelerator; A dehydrating agent, a dehalogenating agent; An initiator for polymerization and a raw material for producing hydrazine, sodium cyanide, azide, cyanide, hydrazine and indigo. sodium amino acid is easily oxidized in the air, and a yellow layer of various oxidation products is formed on the surface. The partial oxidation products are explosive and may be initiated by friction or heat. The sodium amide is decomposed into nitrogen, sodium, hydrogen and ammonia when heated to 300-330 °c in a vacuum. Therefore, the bottle should be sealed and stored in an inert atmosphere to avoid contact with air, water or fire, so as to avoid explosion and fire. The reaction of sodium amino acid with carbon monoxide can produce sodium cyanide, and sodium cyanide can be produced by this reaction. Sodium amino acid is commonly used as a condensation promoter, a dehydrating agent, an alkylating agent, and the like for organic synthesis. Industrial use of molten sodium and gaseous ammonia in the reaction of 300~400 deg C to get the amino acid sodium, the laboratory is by sodium and liquid ammonia in the presence of a catalyst at room temperature when the reaction. |
| toxicity | dust is toxic, can cause corrosive burns, can seriously stimulate the eyes, skin and respiratory system. Wear gas masks and gloves when disposing of the escaping materials, mix them with dry sand and send them to an open place, and release them to the wastewater system after reacting with a large amount of water. Water should also be applied to the contaminated ground; Skin contact, eye irritation, should be immediately washed with water; Wrong in the mouth, should immediately rinse, drinking water and vinegar or 1% acetic acid, then the patient was sent to the hospital for treatment. |
| Use | as a condensation promoter in organic chemical reactions. Is the raw material for the synthesis of vitamin A. It is also used as a dehydrating agent, a dehalogenating agent, an alkylating agent, and an ammoniating agent. Dissociation of NHf ions in liquid ammonia serves as an initiator for anionic polymerization to produce polyvinyl chloride. Also used in the manufacture of azide compounds, cyanide, indigo and hydrazine. used in the production of sodium cyanide, organic synthesis and pharmaceutical manufacturing commonly used as condensation accelerator for organic synthesis, dehydrating agent, etc. as a condensation accelerator in organic chemical reactions, it is a raw material for the synthesis of vitamin A, and also used as a dehydrating agent, dehalogenating agent, alkylating agent, dissociated NHT ion is used as an initiator for anionic polymerization of polyvinyl chloride, and is also used in the manufacture of fine nitridation agents, nitrides, sodium cyanide, methylene blue and hydrazine. |
| production method | liquid ammonia which melts Metal sodium at 97~100 ℃ and dehydrates slowly, heating to 350 ~ 360c for reaction to generate sodium amino acid and hydrogen gas, after the reaction is cooled, condensed into thin slices, and then pulverized to obtain sodium amino acid product. 2Na 2NH3 → 2NaNH2 H2 |
| category | water burning articles |
| explosive hazard characteristics | reaction with water, flammable gas, likely explosion |
| flammability hazard characteristics | toxic nitrogen oxides produced by water decomposition; flammable and explosive hydrogen and corrosive sodium hydroxide |
| storage and transportation characteristics | The warehouse is ventilated and dried at low temperature; Stored separately from acid and alkali; Moisture-proof |
| extinguishing agent | dry sand, carbon dioxide |
| spontaneous combustion temperature | 450°C |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-10 22:29:15
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