12069-94-2

Name Niobium carbide
CAS 12069-94-2
EINECS(EC#) 235-117-8
Molecular Formula CHNb
MDL Number MFCD00016237
Molecular Weight 105.93
MOL File 12069-94-2.mol
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Chemical Properties

Appearance Lavender-gray powder.Insoluble in water and in all acids except a mixture of nitric acid and hydrogen fluoride
Melting point  3500°C
Boiling point  4300°C
density  7.6 g/mL at 25 °C(lit.)
solubility  insoluble in H2O, acid solutions
form  Powder
color  White
Specific Gravity 7.6
Resistivity 51.1–74.0 (ρ/μΩ.cm)
Water Solubility  Insoluble in water.
Thermal Conductivity 33.472 W/(m·K)
Crystal Structure Cubic, NaCl Structure
Uses
niobium carbide (NbC) is extremely hard refractory materials. TiC, ZrC, VC and NbC are commercially used in tool bits for cutting tools. HfC and NbC can also be used as refractory coatings in nuclear reactors.
Hardness, Rockwell A 90, at RT
Modulus of Elasticity 330 - 537 GPa
Poissons Ratio 0.22 (@Temperature 23.0 °C )
0.25 (@Temperature 1930 °C )
Shear Modulus 197 - 245 GPa
Vickers Microhardness 2400
EPA Substance Registry System Niobium carbide (NbC)(12069-94-2)
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Safety Data

Symbol(GHS)  Flame (GHS02)
GHS02
Signal word  Warning
Hazard statements  H228
Precautionary statements  P210-P240-P241-P280-P370+P378a
RIDADR  UN3178
WGK Germany  3
TSCA  Yes
REACH Registrations Active
HazardClass  4.1
PackingGroup  III
Storage Class 13 - Non Combustible Solids

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Hazard Information

Material Safety Data Sheet(MSDS)

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