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Infobox references. 1,2,3,4,6-Pentagalloylglucose is the penta gallic acid ester of glucose. It is a gallotannin and the precursor of ellagitannins. [ 1] Pentagalloyl glucose can precipitate proteins, [ 2] including human salivary α-amylase.
Overview. The first locomotives of the 2-6-6-2 wheel arrangement were built in 1906 by the Great Northern Railway to permit longer trains on their heavily graded line over the Cascade Mountains. [ 5] They were a refinement of the first North American Mallets, 0-6-6-0 engines built for the Baltimore & Ohio in 1904, with leading and trailing ...
The USRA 2-6-6-2 locomotive is a Mallet, or compound articulated type, having both low-pressure and high-pressure cylinders. The smaller high-pressure cylinders powered the rear set of driving wheels, and the larger low-pressure cylinders powered the forward set of driving wheels. The USRA 2-6-6-2 articulated locomotives were direct ...
2,4,6-Trimethylaniline is an organic compound with formula (CH 3) 3 C 6 H 2 NH 2. It is an aromatic amine that is of commercial interest as a precursor to dyes. It is prepared by selective nitration of mesitylene, avoiding oxidation of the methyl groups, followed by reduction of the resulting nitro group to the aniline.
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2,4,6-Tri-tert-butylphenol ( 2,4,6-TTBP) is a phenol symmetrically substituted with three tert -butyl groups and thus strongly sterically hindered. 2,4,6-TTBP is a readily oxidizable aromatic compound and a weak acid. It oxidizes to give the deep-blue 2,4,6-tri- tert -butylphenoxy radical. [ 1] 2,4,6-TTBP is related to 2,6-di- tert -butylphenol ...
The LD50 (oral, rats) is 756 mg/kg. Animal studies have shown that 1,2,4-trichlorobenzene affects the liver and kidney, and is possibly a teratogen. [4] There is no regulated occupational exposure limit for chemical exposure, but the National Institute for Occupational Safety and Health recommends no greater exposure than 5 ppm, over an 8-hour workday.
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