Thiourea (General Grade) Chemical formula: CH4N2S Appearance: White crystals Typical Analysis:Purity 99.0% min. Loss of Ignition 0.40% max. Ash 0.10% max. Insoluble matter in water 0.02% max. Sulfocyanate 0.02% max. Melting point 171min.Packing: 25kg plastic woven bag Uses: Used for producing Sulfanilamide Medicine. Also used in Electrogalvanizing Dyeing and Pesticide.