Natriumhydrid
NAH · Sodium Hydride, 60% oil · QHN · Sodium hydride (NaH) · Sodium hydride suspension · Sodium Hydride 60% in mineral oil · 340F · nah80
Identifikatoren & physikalische Daten
| CAS No. | 7646-69-7 |
|---|---|
| Summenformel | HNa |
| Durchschnittliche Molmasse | 23,9977 g/mol |
| Monoisotopische Masse | 23,99759431 g/mol |
| SMILES | [H-].[Na+] |
| InChIKey | BZKBCQXYZZXSCO-UHFFFAOYSA-N |
| PubChem CID | 24758 |
| DTXSID | DTXSID90893680 |
| Lokaler Name | Natriumhydrid |
Chemische & physikalische Eigenschaften
| Polarare Oberfläche (TPSA) | 0 |
|---|---|
| H-Brücken-Donoren | 0 |
| H-Brücken-Akzeptoren | 1 |
| Frei drehbare Bindungen | 0 |
| Schwere Atome | 1 |
| Formalladung | 0 |
| Komplexität | 0 |
| Schmelzpunkt | 800 °C (dec.) (lit.) |
| Dichte | 1.2 |
| Flammpunkt | 185°C |
| Lagerbedingungen | Store below +30°C. |
| Löslichkeit | Soluble in molten sodium. Insoluble in ammonia, benzene,carbon tetrachloride, carbon disulfide and all organic solvents.REACTS |
| Aggregatzustand | powder (moistened with oil) |
| Farbe | White to pale gray |
| Spezifische Wärmekapazität | Cp(crystal): 1.52 J/(g·K), at 25℃ |
| Merck | 14,8625 |
| InChI | InChI=1S/Na.H |
| InChIKey | MPMYQQHEHYDOCL-UHFFFAOYSA-N |
| SMILES | [NaH] |
| CAS Datenbank | 7646-69-7(CAS DataBase Reference) |
| NIST chemische Informationen | Sodium hydride(7646-69-7) |
| EPA chemische Informationen | Sodium hydride (NaH) (7646-69-7) |
Sicherheit & Vorschriften
| CSL Reaction Information | CSL00007N,N-DIMETHYLFORMAMIDE + SODIUM HYDRIDEThermal runaway reaction already at temperatures > 40°CDeprotonationC&EN6/29/18 |
|---|---|
| F | 10-21 |
| Wassergefährdungsklasse (WGK) | 3 |
| TSCA-Inventar-Status | TSCA listed |
| UN-Transportnummer | UN 1427 |
| Zollcode | 28500090 |
| RTECS-Nr. | WB3910000 |
| R-Sätze (R) | 15-36-35-11 |
| Gefahrensymbole | F,C |
| Sicherheitshinweise (S) | 26-43-7/8-43A-24/25-7-60-22-45-37/39-16 |
| Gefahrenklasse | 4.3Eye Dam. 1Flam. Sol. 1Met. Corr. 1Skin Corr. 1AWater-react 1 |
| Verpackungsgruppe | I |
| Lagerklasse | 4.3 - Hazardous materials which set free flammable gases upon contact with water |
| Gefahrstoffdaten | 7646-69-7(Hazardous Substances Data) |
Anwendungen & Verwendung
Beschreibung
Sodium hydride, is a binary salt that has a specific hazard of releasing hydrogen upon contact with water. It is an odorless powder that is violently water reactive. The four-digit UN identification number is 1427. The NFPA 704 designation is health 3, flammability 3, and reactivity 2. The white space at the bottom of the diamond has a W with a slash through it, indicating water reactivity.
Verwenden
Sodium hydride is used to enhance the condensation reactions of carbonyl compounds through the Dieckmann condensation, Stobbe condensation, Darzens condensation and Claisen condensation. It acts as a reducing agent used to prepare diborane from boron trifluoride. It is also used in fuel cell vehicles. Further, it is used to dry some organic solvents. In addition to this, it is involved in the preparation of sulfur ylides, which is utilized for the conversion of ketones into epoxides.