Refractory Materials are usually non-metallic materials having those chemical and physical properties that make them applicable for structures, or as components of systems, that are exposed to environments above 1,000 °F (811 K; 538 °C)。

Sodium bicarbonate




Item Standard
NaHCO3 99
As 0.0001 max
Pb 0.0005% max
L.O.I. 0.2% max
PH 8.6