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HomeProduct name listHAFNIUM BORIDE

HAFNIUM BORIDE

  • CAS NO.:12007-23-7
  • Empirical Formula: B2Hf-
  • Molecular Weight: 200.11
  • MDL number: MFCD23713084
  • EINECS: 234-500-7
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-04-09 11:47:26
HAFNIUM BORIDE Structural

What is HAFNIUM BORIDE?

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]

The Uses of HAFNIUM BORIDE

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).

Properties of HAFNIUM BORIDE

Melting point: 3250°C
Density  10.5
form  Powder
Specific Gravity 10.5
color  gray hexagonal, hexane crystals, crystalline
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
EPA Substance Registry System Hafnium boride (HfB2) (12007-23-7)

Safety information for HAFNIUM BORIDE

Signal word Warning
Pictogram(s)
ghs
Exclamation Mark
Irritant
GHS07
GHS Hazard Statements H315:Skin corrosion/irritation
H319:Serious eye damage/eye irritation
H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes P261:Avoid breathing dust/fume/gas/mist/vapours/spray.
P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

Computed Descriptors for HAFNIUM BORIDE

InChIKey VFOMGQXFCYKNAF-UHFFFAOYSA-N

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