Castor Oil Prices in USA United States: 1685 USD/MT (Refine Castor Oil FSG Grade)   In December of 2023, the price of castor oil for the fourth quarter in the United States was 1685 USD/MT.    The latest report by IMARC, titled "Castor Oil Pricing Report 2024: Price Trend, Chart, Market Analysis, News, Demand, Historical and Forecast Data," delivers a comprehensive analysis of...