Product Details
Sodium hydride CAS#7646-69-7
Sodium hydride is a binary salt that releases hydrogen when in contact with water, posing specific hazards. It is an odorless powder that reacts violently with water. Its four-digit UN identifier is 1427. The NFPA 704 rating shows health 3, flammaleic-anhydride.html">mability 3, and reactivity 2. The bottom white section of the diamond features a crossed-out W, indicating reactivity with water.
Sodium hydride Chemical Properties
| Property | Value |
| 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 | 14,8625 |
| 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
| Item | Details |
| 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 | 10-21 |
| 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 promotes condensation reactions of carbonyl compounds including Dieckmann, Stobbe, Darzens, and Claisen condensations. As a reducing agent, it helps produce diborane from boron trifluoride. It is applied in fuel cell vehicles and used to dry certain organic solvents. Additionally, it participates in synthesizing sulfur ylides, which convert ketones into epoxides.
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