P + S
Reaction P + S �¨ PS(n)
Phase transition


ReagentP(red phosphorus) coarse powder

S powder (6N)
CompanyRare Metallic Co. Ltd.
Weight19.7mg
ContainerAl pan, treated in N2 atmosphere
Comment
Figure shows only the first heating process. Sulfidation reaction starts at 180�Ž, and continues till 325�Ž. Peak at 219�Ž.
ƒ¢H‚’=506.7J/g.
The enthalpy of formation
�@Product is unstable in air. Very hygroscopic. Decomposition was accompanied by the evolution of H2S gas.
DSChome