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.
African Americans in the United States Congress. Sen. Hiram Revels, the first African American to serve in either house of Congress. The first African Americans to serve in the United States Congress were Republicans elected during the Reconstruction Era. After slaves were emancipated and granted citizenship rights, freedmen gained political representation in the Southern United States for the first time.