A fungicide based on 1,4,5,6,7,8,8-heptachloro-3a,4,7,7a-tetrahydro-4,7-methano-indene. It is a white powder that smells like camphor, and it was used extensively in the past for killing insects in homes, buildings, and on food crops, especially corn. It is now classified as a POP.
Under the Stockholm Convention on Persistent Organic Compounds, use of this chemical in Europe is subject to restrictions.
More information about POPS on pops.int