Assertion: sodium carbonate's sodium | /r/HasProperty | clear and transparent solid
Facets:
value: at 3 mbar
type: TEMPORAL
Source sentences:
text: These properties change dramatically at elevated pressures: at 1.5 Mbar, the color changes from silvery metallic to black; at 1.9 Mbar the material becomes transparent with a red color; and at 3 Mbar, sodium is a clear and transparent solid.