99% thiourea

thiourea is the main raw material of thiourea dioxide,as a fine chemical product with high additive value,thiourea is widely used in pharmaceutical raw material,textile dyeing and printing,metal-mine-selecting,and laundering.In macromolecule material industry,it is used as catalysis agent and stabilizer of resinic producing. produce Standard: HG/T 3266-2002 Specifications 1)Purity: 99% min 2)Water:0.5% max 3)Ash content: 0.1% max 4)Melting point: 175min