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 American Firsts in Congress. The first African American Member of Congress was Hiram Rhodes Revels (R-MS), who served. in the Senate in the 41st Congress (1870-1871). He also has the distinction of being the first. African American Member of the Senate and the first African American Member of Congress.