RoundUp herbicide by Monsanto contains the following ingredients:
In a letter forwarded to Northwest Coalition for Alternatives to Pesticides, Monsanto identified RoundUp's ingredients as:
Isopropylamine salt of glyphosate (active ingredient)
The ethoxylated tallowamine surfactant
Related organic acids of glyphosate
According to the US Environmental Protection Agency in a letter dated April 30, 1999, in response to a Freedom of Information Request, the following inert ingredients are in RoundUp Super Concentrate Weed & Grass Killer:
Polyoxyethylene alkylamine (CAS #61791-2)
Water (CAS #7732-18-5)
FD&C Blue No. 1 (CAS #3844-45-9)
David H. Monroe, an Industrial and Environmental Toxicologist, stated in an October 16, 1989 letter to the National Campaign Against the Misuse of Pesticides (NCAMP) that most polyalkoxylated surfactants such as the polyoxyethylene alkylamine in RoundUp are contaminated with 1,4-dioxane. A study done by Monroe on Vision, a glyphosate product by Monsanto, revealed that it contained 1,4-dioxane at a level of 350 ppm.
(Monroe D, 1989. Letter to NCAMP.)
1,4-dioxane is carcinogenic, and is known to damage the liver, kidney, brain and lungs.