N-(phosphonomethyl) Glycine. Odorless, colorless or white crystalline powder. It is an organophosphorous herbicide which is often mixed in a liquid and is used to control weeds. Contact can irritate the skin and ice; breathing glyphosate can irritate the nose and throat; exposure causes nausea, vomiting, diarrhea, low blood pressure and convulsion; it may damage the liver and kidneys; high exposure can cause arrhythmia) and this can cause death.