Iron(II) sulfate was used in the textile industry for centuries as a dye fixative. It is used historically to blacken leather and as a constituent of ink. The preparation of sulfuric acid ('oil of vitriol') by the distillation of green vitriol (Iron(II) sulfate) has been known for at least 700 years. Together with other iron compounds, ferrous sulfate is used to fortify foods and to treat and prevent iron deficiency anemia. Constipation is a frequent and uncomfortable side effect associated with the administration of oral iron supplements. Stool softeners often are prescribed to prevent constipation. Ferrous sulfate was used in the manufacture
Pure Oil Carolina, South Carolina, and Virginia. It also has the right to expand the use of the name and trademark anywhere in the United States. In 2008, the cooperative had changed its name to Pure Oil Jobbers Cooperative and moved its headquarters to Rock Hill. Pure Oil Service Station (disambiguation) Pure Oil Service Stations Pure Oil Pure Oil Company was an American petroleum company founded in 1914 and sold to what is now Union Oil Company of California in 1965. The Pure Oil name returned in 1993 as a cooperative (based in Rock Hill, South Carolina since 2008) which has grown