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
Oman Oil Marketing Company lubricants throughout the Sultanate. Oman Oil Marketing Company Oman Oil Marketing Company SAOG (Omanoil) was launched in October 2003, along with its new brand identity, when Oman Oil Company acquired shares of what was formally known as BP Oman in December 2003. Today, it is the only 100 percent Omani owned fuels marketing company, 49% of which is owned by Oman Oil Company. Other shareholders include Oman Cement Company, BankMuscat and Dhofar International Development and Investment Holding Company. The Chairman of the Board of directors is Salim Abdullah Al Rawas and the Chief Executive Officer is Omar Ahmad Salim Qatan.