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ChemicalBook--->CAS DataBase List--->12007-23-7

12007-23-7

12007-23-7 Structure

12007-23-7 Structure
IdentificationBack Directory
[Name]

HAFNIUM BORIDE
[CAS]

12007-23-7
[Synonyms]

HafniuM borid
HAFNIUM BORIDE
HAFNIUM DIBORIDE
Hafnium boride HfB2
Hafnium boride powder
Hafnium boride powder (HfB2)
hafnium,λ2-boranylideneboron
Hafnium boride, 99% (metals basis)
hafnium,λsup2sup-boranylideneboron
HAFNIUM BORIDE ISO 9001:2015 REACH
Hafnium boride powder, 5-10 μm, 99.5%
um 99.8%hafnium,λ2 boranylideneboron
Cobalt Nickel (Co-Ni) Alloy Sputtering Targets
Hafnium boride, 99.5% trace metals basis excluding Zr
Hafnium boride powder, -325 mesh, 99% trace metals basis
HAFNIUM BORIDE, 99.5% (METALS BASIS EXCLUDING ZR), ZR <2%
[EINECS(EC#)]

234-500-7
[Molecular Formula]

B2Hf-
[MDL Number]

MFCD00016125
[MOL File]

12007-23-7.mol
[Molecular Weight]

200.11
Chemical PropertiesBack Directory
[Melting point ]

3250°C
[density ]

10.5
[form ]

Powder
[color ]

gray hexagonal, hexane crystals, crystalline
[Specific Gravity]

10.5
[Water Solubility ]

Insoluble in water.
[Crystal Structure]

Hexagonal
[Exposure limits]

ACGIH: TWA 0.5 mg/m3
NIOSH: IDLH 50 mg/m3; TWA 0.5 mg/m3
[InChIKey]

VFOMGQXFCYKNAF-UHFFFAOYSA-N
[EPA Substance Registry System]

Hafnium boride (HfB2) (12007-23-7)
Hazard InformationBack Directory
[Chemical Properties]

gray, hexagonal, crystal(s) solid, a=0.3141 nm, c=0.3470nm; can be prepared by heating HfO2+C+B2O3; hardness 2900 kgf/mm2; resistivity 8.8μohm· cm; used as a refractory material and as a sputtering target with 99.5% purity to produce films, which may be wear-resistant and semiconducting [HAW93] [KIR80] [CER91]
[Uses]

Hafnium boride is used in wear resistant coatings. It is also employed as a nuclear reactor control rod. Furthermore, it is used in hypervelocity re-entry vehicles like ICBM heat shields or aerodynamic leading-edges. It is useful in the preparation of high temperature composites in conjunction with silicon carbide (SiC).
Safety DataBack Directory
[Hazard Codes ]

Xi
[Risk Statements ]

36/37/38
[Safety Statements ]

26
[WGK Germany ]

3
[TSCA ]

Yes
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