Potassium Thiosulfate July 5, 2024California, Eastern Cornbelt, Market Watch, Potassium Thiosulfate, Western Cornbelthlancey@bloomberg.net Eastern Cornbelt: Potassium thiosulfate was steady at $680/st FOB Terre Haute in early July. Western Cornbelt: Potassium thiosulfate pricing was unchanged at $680/st FOB in Iowa. California: The potassium thiosulfate market was steady at $680/st FOB Sacramento.