Creosote removed; the "heavy oil", which sinks; and the "anthracene oil", which when cold is mostly solid and greasy, of a buttery consistence. Creosote refers to the portion of coal tar which distills as "heavy oil", typically between 230–270 °C, also called "dead oil"; it sinks into water but still is fairly liquid. Carbolic acid is produced in the second fraction of distillation and is often distilled into what is referred to as "carbolic oil". Commercial creosote will contain substances from six groups. The two groups occur in the greatest amounts and are the products of the distillation process—the "tar acids",
A Letter for Tomorrow A Letter for Tomorrow A Letter for Tomorrow (; also translated "Letter for the Future") is an open letter first published on 3 May 2004, by then-President of Iran Mohammad Khatami, addressing Iranian citizens, especially the youth. The letter was later published as a book by Khatami Culture House Institute. He promised to write the letter at a 27 April 2004 meeting with youth. Iranian blogger writing under the pen name "A disqualified Citizen", comments that Khatami, by calling his statements "A Letter for Tomorrow" means that "today's electorate and the current population of Iran lack the qualifications to fathom