HAFNIUM HYDRIDE
- CAS NO.：12770-26-2
- Empirical Formula: H2Hf
- Molecular Weight: 180.51
- MDL number: MFCD00085337
- EINECS: 235-812-6
- SAFETY DATA SHEET (SDS)
- Update Date: 2023-10-17 17:11:46
What is HAFNIUM HYDRIDE?
Chemical properties
-325 mesh 10μm or less with 99.8% purity; brittle solid, fcc; prepared by reacting Hf and H2 above 250°C [KIR80] [CER91]
Chemical properties
Hafnium hydride is formed as refractory, tetrahedral crystals. Hafnium hydride is usually produced as an intermediate in the process of making hafnium powder from mass hafnium metal. Hafnium reacts reversibly with hydrogen to form hydride, and the proportion of hydrogen depends upon the temperature and pressure of hydrogen used. As hydrogen is absorbed, the hafnium transforms from the hexagonal metal to the face-centered cubic hydride and then to the facecentered tetragonal hydride. Hafnium hydride is brittle and is easily crushed to very fine particles sizes.
Properties of HAFNIUM HYDRIDE
| Density | 11.400 |
| form | refractory tetragonal crystals |
| color | refractory tetragonal crystals, crystalline |
| EPA Substance Registry System | Hafnium hydride (HfH2) (12770-26-2) |
Safety information for HAFNIUM HYDRIDE
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation |
| Precautionary Statement Codes |
P280:Wear protective gloves/protective clothing/eye protection/face protection. P302+P352:IF ON SKIN: wash with plenty of soap and water. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P332+P313:IF SKIN irritation occurs: Get medical advice/attention. P337+P313:IF eye irritation persists: Get medical advice/attention. |
Computed Descriptors for HAFNIUM HYDRIDE
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