Sulfuric acid the Hellenistic alchemical works of Zosimos of Panopolis, in the treatise "Phisica et Mystica", and the Leyden papyrus X. Medieval Islamic era alchemists, Jābir ibn Hayyān (c. 721 – c. 815 AD, also known as Geber), Razi (865 – 925 AD), and Jamal Din al-Watwat (d. 1318, wrote the book "Mabāhij al-fikar wa-manāhij al-'ibar"), included vitriol in their mineral classification lists. Ibn Sina focused on its medical uses and different varieties of vitriol. Sulfuric acid was called "oil of vitriol" by medieval European alchemists because it was prepared by roasting "green vitriol" (iron(II) sulfate) in an iron retort. There are
Standard Oil of Colorado of Indiana, and Standard Oil of Colorado was disbanded. Standard Oil of Colorado Standard Oil of Colorado was chartered in Denver, Colorado in 1922. It was eventually rechartered under the name Standard Oil Company of Colorado in 1927 and began to sell stock in 1930. Standard Oil of Colorado was not related to the well known Standard Oil company and did not own any wells, refineries, or gasoline stations. It was sued in 1931 by Standard Oil of Indiana (which was interested in expanding its marketing influence into the Colorado area) over use of the "Standard Oil" name. By 1934,