Empirical Formula: CU
Molecular Weight: 250.04 g/mol
Density: 13.6 g/cm³
Melting point: 2790 °C
Structure of Uranium carbide (CAS NO.12070-09-6):
                         

Uranium carbide (CAS NO.12070-09-6) was used in late designs of nuclear thermal rockets, and like uranium dioxide and some other uranium compounds, uranium carbide can be used as a nuclear fuel for nuclear reactors. As nuclear fuel, uranium carbide can be used either on its own, or mixed with plutonium carbide . Its pellets are used as fuel kernels for the US version of pebble bed reactors.
 

A radioactive material. The powdered carbide ignites spontaneously in air. See also URANIUM.

OSHA PEL: TWA 0.2 mg(U)/m³; STEL 0.6 mg(U)/m³
ACGIH TLV: TWA 0.2 mg(U)/m³; STEL 0.6 mg(U)/m³

 Uranium carbide ,its cas register number is 12070-09-6. It is a hard refractive ceramic material and comes in several stoichiometries (UCx) .Ammonia synthesis from nitrogen and hydrogen is sometimes accomplished in the presence of Uranium carbide (CAS NO.12070-09-6) acting as a catalyst.