Next, the second stage kicks in, and its five J-2 oxygen/hydrogen engines take the ship another 77 miles in six minutes. Then the third stage engine pushes the craft to the 17,500 mph required to escape Earth's gravitational pull and get into orbit.
Industrially, ferrous sulfate is mainly used as a precursor to other iron compounds. It is a reducing agent, and as such is useful for the reduction of chromate in cement to less toxic Cr(III) compounds. Historically ferrous sulfate was used in the textile industry for centuries as a dye fixative.
Slow Fe Â® contains ferrous sulfate, the ingredient most recommended by doctors. And with a special controlled delivery system, Slow Fe Â® provides high potency iron while being gentle on your stomach, so you experience fewer side effects (nausea and abdominal discomfort) common to iron use.low Fe Â® contains ferrous sulfate, the ingredient most recommended by doctors. And with a special controlled delivery system, Slow Fe Â® provides high potency iron while being gentle on your stomach, so you experience fewer side effects (nausea and abdominal discomfort) common to iron use.