Sodium reaction Chiral synthesis Synthesis in ultralow temperature, anhydrous and oxygan free Acetylene hydrocarbon reaction Synthesis of organic fluoride Cyanogenation Hydrogenation Fixed-bed dehydrogenation, hydrogenation & ammonia oxidation   N-Phenyl Pyrrolidone Molecular Structure: Specification: Testing items Value Appearance white or light yellow crystal Purity % 99.0 MIN Moisture% Packing: