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.
Ferrous gluconate is used to treat iron deficiency anemia (a lack of red blood cells caused by having too little iron in the body). Ferrous gluconate may also be used for purposes not listed in this medication guide.Follow all directions on your medicine label and package.et emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat. Call your doctor at once if you have: 1  bright red blood in your stools; or. 2  pain in your chest or throat when swallowing a ferrous gluconate tablet.