| Identification | More | [Name]
ZIRCONIUM HYDRIDE | [CAS]
7704-99-6 | [Synonyms]
ZIRCONIUM HYDRIDE
zirconium dihydride
Zirconium(Ⅱ)bydride
ZIRCONIUM(II) HYDRIDE
ZIRCONIUM HYDRIDE,-325 MESH, 99%
Zirconiumhydride,99.7%(metalsbasis)
Dihydridezirconium(II)
Dihydrogen zirconium(II) salt
ZrH4 | [EINECS(EC#)]
231-727-3 | [Molecular Formula]
H2Zr | [MDL Number]
MFCD00148878 | [Molecular Weight]
93.24 | [MOL File]
7704-99-6.mol |
| Chemical Properties | Back Directory | [Definition]
Contains 1.7–2.1% combined hydrogen which can
be driven off in a vacuum above 600C. | [Appearance]
Gray-black metallic powder. Stable
toward air and water. | [density ]
5.47 | [solubility ]
insoluble in H2O | [form ]
Powder | [color ]
gray tetragonal crystals, crystalline | [Water Solubility ]
no reaction with H2O [MER06] | [Sensitive ]
Moisture Sensitive | [Merck ]
14,10176 | [CAS DataBase Reference]
7704-99-6(CAS DataBase Reference) | [EPA Substance Registry System]
Zirconium hydride (ZrH2) (7704-99-6) |
| Hazard Information | Back Directory | [Chemical Properties]
Gray-black metallic powder. Stable
toward air and water. | [Uses]
Zirconium hydride is a powerful reducing agent in acid solution or at high temperatures; hydrogenation catalyst; in the vacuum tube industry.Also, it is used as a source of pure hydrogen and a catalyst in hydrogenation reactions. Some other applications are in powder metallurgy; as a moderator in nuclear reactors; and as a metal-foaming agent
| [Hazard]
Flammable, dangerous fire risk, especially
in the presence of oxidizers. | [Description]
Zirconium(II) hydride, ZrH2, is a molecular chemical compound, which has been produced by laser ablation and isolated at low temperature. Zirconium(II) hydride has a dihedral (C2v) structure. In zirconium(II) hydride, the formal oxidation states of hydrogen and zirconium are 21 and 12, respectively, since the electronegativity of zirconium is lower than that of hydrogen. The stability of metal hydrides with the formula MH2 (M 5 Ti-Hf) decreases as the atomic number increases.
| [Physical properties]
Grayish-black powder; density 5.60 g/cm3; stable in water; soluble in dilute hydrofluoric acid; soluble in concentrated acids. | [Preparation]
Zirconium hydride may be prepared by heating zirconium oxide with magnesium in the presence of hydrogen: ZrO2 + 2Mg + H2 → ZrH2 + 2MgO
Alternatively, hydride may be made by heating zirconium oxide with calcium hydride in the presence of hydrogen
Hydride also may be obtained by combining zirconium metal with hydrogen at elevated temperature. | [Production Methods]
Zirconium hydride in powder form was produced by the reduction of zirconium oxide with calcium hydride in a bomb reactor. However, the workup was hazardous and many fires and explosions occurred when the calcium oxide was dissolved with hydrochloric acid to recover the hydride powder. With the ready availability of zirconium metal via the Kroll process, zirconium hydride can be obtained by exothermic absorption of hydrogen by pure zirconium, usually highly porous sponge. The heat of formation is 167.4 J/mol (40 kcal/mol) hydrogen absorbed. | [General Description]
We are committed to bringing you Greener Alternative Products, which adhere to one or more of The 12 Principles of Greener Chemistry. This product has been enhanced for energy efficiency. Find details here. | [Flammability and Explosibility]
Flammable |
| Safety Data | Back Directory | [Hazard Codes ]
F | [Risk Statements ]
R11:Highly Flammable.
R36/37/38:Irritating to eyes, respiratory system and skin . | [Safety Statements ]
S24/25:Avoid contact with skin and eyes .
S43:In case of fire, use ... (indicate in the space the precise type of fire-fighting equipment. If water increases the risk add-Never use water) .
S7/8:Keep container tightly closed and dry . | [RIDADR ]
UN 1437 4.1/PG 2
| [WGK Germany ]
3
| [RTECS ]
ZH8015000
| [TSCA ]
Yes | [HazardClass ]
4.1 | [PackingGroup ]
II | [HS Code ]
28500090 | [Safety Profile]
A powerful reducing
agent. Flammable when dry or wet. Very
dangerous to handle; can explode.
Incandesces when heated in air. See also
HYDRIDES and ZIRCONIUM
COMPOUNDS. |
|
| Company Name: |
Alfa Aesar
|
| Tel: |
400-6106006 |
| Website: |
http://chemicals.thermofisher.cn |
| Company Name: |
Energy Chemical
|
| Tel: |
021-021-58432009 400-005-6266 |
| Website: |
http://www.energy-chemical.com |
|