Chemical used for dehorning is

Chemical used for dehorning is Caustic potash.
Removing horns by disbudding or dehorning is a common management practice to reduce the risk of injury and bruising to other cattle.
Caustic potash or caustic soda is the common chemical used for dehorning. These are available in the form of paste or solution. Clip the hair around the horn buds and surrounding area, and a ring of Vaseline to protect the eyes against chemicals.