Cosayach

Compañía de Salitre y Yodo or Cosayach is a Chilean chemical company and a supplier of iodine. It is Chile's second largest iodine producer after Sociedad Química y Minera while Chile is the world's largest iodine producer.^[1][2] The company owns 200,000 ha's of land hosting 300,000 tons of iodine and 50 million tons of nitrate in the Atacama Desert in Tarapacá Region.^[3] Cosayach has a processing plant in the village of Cala-Cala in the commune of Pozo Almonte.^[4] In 2024 the company obtained a permit from National Geology and Mining Service to operate its iodine plant until 2030.^[5]