Question 5: How many types of chemical toxic substances did the U.S. military use in southern Vietnam? And what was the quantity?
From August 1961 to October 1971, the U.S. military tested and used several dozen different types of chemical agents, totaling over 100,000 tons, but primarily utilized CS gas, Agent Orange (AO), Agent White, Agent Blue, and a significant amount of Agent Purple, Agent Pink, and Agent Green. Agent Orange, Purple, Pink, and Green were agents containing dioxin impurities.
The quantities of the main agents are estimated as follows:
