Description Chemical Name: (2,5-Dioxo-4-imidazolidinyl) urea CAS Registry Number: [ 97-59-6 ] Molecular formula: C4H6N4O3 Molecular Weight:158.1 Specifications: ITEM PREMIUM GRADE FIRST GRADE Appearance White crystalline powder White crystalline powder Assay 100～101.5% min 99.0~100% min PH 5~6 5~6 Heavy metals 1ppm max 10ppm max SO42－ 1ppm max 10ppm max Cl-(Chloride) 0.01% Max 0.05% Max Ashes 0.1% Max 0.1% Max Loss on drying 0.1% Max 0.2% Max