Sodium hydride CAS#7646-69-7
Highly Effective Chemical Reagent: Sodium hydride is a widely used binary inorganic compound that serves as a powerful reagent in various chemical synthesis and industrial processes.
Odorless Powder Form: Supplied as an odorless powder, allowing for convenient handling and incorporation into controlled reaction systems.
Reactive Hydrogen Source: Releases hydrogen upon contact with water, making it a valuable reactant for specialized chemical applications that require strong reactivity.
Recognized and Regulated Material: Identified under UN 1427 and classified according to NFPA standards, ensuring clear transportation, storage, and safety management guidelines for industrial users.
Sodium Hydride CAS#7646-69-7
Sodium hydride is a binary inorganic salt that presents a specific hazard of releasing hydrogen gas upon contact with water. It is an odorless powder with strong and violent reactivity toward water.
The substance is assigned UN identification number 1427. According to the NFPA 704 classification, it is rated as Health 3, Flammability 3, and Reactivity 2. The lower section of the hazard diamond includes a “W” with a slash, indicating its water-reactive nature.
Sodium hydride Chemical Properties
| Melting point | 800 °C (dec.) (lit.) |
| density | 1.2 |
| Fp | 185°C |
| storage temp. | Store below +30°C. |
| solubility | Soluble in molten sodium. Insoluble in ammonia, benzene,carbon tetrachloride, carbon disulfide and all organic solvents. |
| form | powder (moistened with oil) |
| color | White to pale gray |
| Water Solubility | REACTS |
| Sensitive | Air & Moisture Sensitive |
| Merck | 148625 |
| Exposure limits | ACGIH: TWA 5 mg/m3 |
| OSHA: TWA 5 mg/m3 | |
| NIOSH: IDLH 2500 mg/m3; TWA 5 mg/m3; STEL 10 mg/m3 | |
| InChI | InChI=1S/Na.H |
| InChIKey | MPMYQQHEHYDOCL-UHFFFAOYSA-N |
| SMILES | [NaH] |
| CAS DataBase Reference | 7646-69-7(CAS DataBase Reference) |
| NIST Chemistry Reference | Sodium hydride(7646-69-7) |
| EPA Substance Registry System | Sodium hydride (NaH) (7646-69-7) |
Safety Information
| Hazard Codes | F,C |
| Risk Statements | 15-36-35-11 |
| Safety Statements | 26-43-7/8-43A-24/25-7-60-22-45-37/39-16 |
| RIDADR | UN 1427 4.3/PG 1 |
| WGK Germany | 3 |
| RTECS | WB3910000 |
| F | 46316 |
| TSCA | TSCA listed |
| HazardClass | 4.3 |
| PackingGroup | I |
| HS Code | 28500090 |
| Storage Class | 4.3 - Hazardous materials which set free flammable gases upon contact with water |
| Hazard Classifications | Eye Dam. 1 |
| Flam. Sol. 1 | |
| Met. Corr. 1 | |
| Skin Corr. 1A | |
| Water-react 1 | |
| Hazardous Substances Data | 7646-69-7(Hazardous Substances Data) |
Product Application of Sodium Hydride CAS#7646-69-7
Sodium hydride is widely used to promote condensation reactions of carbonyl compounds, including Dieckmann, Stobbe, Darzens, and Claisen condensations.
It also functions as a reducing agent in the preparation of diborane from boron trifluoride and finds applications in fuel cell vehicle technologies. In addition, it is used as a drying agent for certain organic solvents.
Furthermore, sodium hydride is involved in the synthesis of sulfur ylides, which are utilized for the conversion of ketones into epoxides.
