When used in the extemporaneous preparation of topical medications, it is supplied in the form of coal tar topical solution USP, which consists of a 20% w/v solution of coal tar in alcohol, with an additional 5% w/v of polysorbate 80 USP; this must then be diluted in an ointment base such as petrolatum.
Hiram Rhodes Revels, R-Miss. Revels was the first African-American to serve as a state senator, representing Mississippi. Revels was elected by the Mississippi State Senate to fill a vacant U.S. Senate seat, which was abandoned by Albert G. Brown when Mississippi seceded from the Union during the Civil War.
E. Frederic Morrow was the first African American to serve in an executive position on a presidentâs staff at the White House. Read More. 1960s: A master of the art of practical politics, Lyndon Johnson came into the White House after the tragedy of President John F. Kennedyâs assassination in 1963.