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Even prior to Operation Ranch Hand (1962-1971) it was known that 2,4,5-T, and thus Agent Purple, Agent Pink, Agent Green, and Agent Orange, were contaminated with tetrachlorodibenzodioxin (TCDD), an extremely toxic and persistent by-product formed during synthesis.
Operation Ranch Hand was a U.S. military operation during the Vietnam War, lasting from 1962 until 1971. Largely inspired by the British use of chemicals 2,4,5-T and 2,4-D ( Agent Orange) during the Malayan Emergency in the 1950s, it was part of the overall herbicidal warfare program during the war called "Operation Trail Dust".
Agent Green: 100% n-butyl ester 2,4,5-T: prior to 1963: Agent Pink: 100% 2,4,5-T (60% n-butyl ester 2,4,5-T, and 40% iso-butyl ester of 2,4,5-T) prior to 1964: Agent Purple: 50% 2,4,5-T (30% n-butyl ester of 2,4,5-T, and 20% iso-butyl ester of 2,4,5-T) and 50% n-butyl ester of 2,4-D: 1961–1965 Agent Blue (Phytar 560G)
Agent Orange is a chemical herbicide and defoliant, one of the tactical use Rainbow Herbicides. It was used by the U.S. military as part of its herbicidal warfare program, Operation Ranch Hand, during the Vietnam War from 1961 to 1971. It is a mixture of equal parts of two herbicides, 2,4,5-T and 2,4-D.
Agent Pink. Ranch Hand UC-123B spraying defoliant in 1962. Agent Pink is the code name for a powerful herbicide and defoliant used by the U.S. military in its herbicidal warfare program during the Vietnam War. The name comes from the pink stripe painted on the barrels to identify the contents.
Agent Orange was the code name for one of the herbicides and defoliants the U.S. military used as part of its herbicidal warfare program, Operation Ranch Hand, during the Vietnam War from 1961 to 1971. It was a mixture of 2,4,5-T and 2,4-D. The 2,4,5-T used was contaminated with 2,3,7,8-tetrachlorodibenzodioxin (TCDD), an extremely toxic dioxin ...
"Agent Orange" was a herbicide and defoliant used by the U.S. as part of Operation Ranch Hand, a herbicidal warfare program initiated by the U.S. military. Developed from 1962 to 1971, Agent Orange consists of a fifty-fifty mixture of 2,4,5-T and 2,4-D, over 20 million gallons of it were produced by the U.S. over the course of the war. Agent ...
The Edgewood Arsenal human experiments took place from approximately 1948 to 1975 at the Medical Research Laboratories—which is now known as the U.S. Army Medical Research Institute of Chemical Defense (USAMRICD)—at the Edgewood Area, Aberdeen Proving Ground, Maryland. The experiments involved at least 254 chemical substances, but focused ...
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The U.S. Agent Orange usage reached an apex during Operation Ranch Hand, in which the material (with its extremely toxic impurity, dioxin) was sprayed over 4.5 million acres of land in Vietnam from 1961 to 1971.