Used primarily as an intermediate in the synthesis of agricultural chemicals, particularly herbicides and fungicides. Its reactivity makes it valuable in forming thiourea derivatives, which are key structures in crop protection agents. Also utilized in the preparation of certain pharmaceuticals where chlorinated aromatic thioureas are required. The compound's ability to transfer the thiocarbamoyl group under controlled conditions allows for selective modifications in complex molecule assembly. Handle with care due to high reactivity and potential release of toxic gases upon decomposition.