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2,4,6-Tribromoaniline. Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). 2,4,6-Tribromoaniline is a brominated derivative of aniline with the formula C 6 H 4 Br 3 N. It is used in organic synthesis of pharmaceuticals, agrochemicals and fire-extinguishing agents.
Infobox references. 2,4,6-Tribromoanisole (TBA) is a chemical compound that is a brominated derivative of anisole. It is one of the chemicals responsible for cork taint. [2] Tribromoanisole is a fungal metabolite of 2,4,6-tribromophenol, which is used as a fungicide. It can be found in minute traces on packaging materials stored in the presence ...
Since the office was established in 1789, 45 men have served in 46 presidencies. The first president, George Washington, won a unanimous vote of the Electoral College. [4] Grover Cleveland served two non-consecutive terms and is therefore counted as the 22nd and 24th president of the United States, giving rise to the discrepancy between the ...
Thomas Jefferson becomes the 3rd president of the United States on March 4, 1801. First Barbary War, 1801–1805. The Territory Northwest of the River Ohio is admitted to the Union as the State of Ohio (the 17th state) on March 1, 1803. The United States takes possession of the Louisiana Purchase, December 20, 1803.
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). ?) 2,4,6-Tribromophenol (TBP) is a brominated derivative of phenol. It is used as a fungicide, as a wood preservative, and an intermediate in the preparation of flame retardants.
2,4,6-Trinitroaniline, C 6 H 4 N 4 O 6, abbreviated as TNA and also known as picramide, a nitrated amine. Materials in this group range from slight to strong oxidizing agents . If mixed with reducing agents , including hydrides , sulfides and nitrides , they may begin a vigorous reaction that culminates in a detonation.
Exam. The AP U.S. History exam lasts 3 hours and 15 minutes and consists of two sections, with the first (Section I) being divided into two parts. Section I part A includes 55 multiple-choice questions with each question containing four choices. The multiple choice questions cover American history from just before European contact with Native ...
History (derived from Ancient Greek ἱστορία (historía) 'inquiry; knowledge acquired by investigation') [1] is the systematic study and documentation of human past. [2] [3] History is an academic discipline which uses a narrative to describe, examine, question, and analyze past events, and investigate their patterns of cause and effect.