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)。

Ammonium acetate

colorless or white granule crystal, soluble in water and ethanol, water solubility:148g/100g(4℃), insoluble in acetone, specific gravity:1.073. melting point: decomposed at 114℃

ammonium acetate CH3COONH4 ≥98%
chloride(CL) ≤0.05%
sulfate(SO4) ≤0.06%
iron(Fe) ≤0.005%
heavy metal(Pb) ≤0.005%
Packaging:woven bag lined with plastic bag, NW:25kg