xylidine造句

• It is an isomer of 3, 4-xylidine.
• It is an aromatic amine and a xylidine isomer.
• 2, 6-Xylidine is a precursor to the anesthetic lidocaine : It is the precursor to the NHC ligand called Imes.
• They are typically yellow liquids ( except 3, 4-xylidine which is solid ) that darken when exposed to air and light.
• In 2003, more than twenty US Army troops were allegedly exposed to 3, 4-xylidine during the occupation of Iraq, leading to a number of health complaints.
• It is also used as a raw material in the manufacture of 2, 4-and 2, 6-xylidine as well as a range of smaller-volume chemicals.
• The rocket was driven by a liquid fuelled engine using Tonka 250, a hypergolic mixture comprising 57 percent of raw xylidine and 43 of triethylamine fed into the combustion chamber under pressure.
• The engine had a compressed air tank to pressurise tanks for the " R-Stoff " fuel ( 50 % triethylamine and 50 % xylidine ) and " SV-Stoff " oxidiser ( 94 % nitric acid with 6 % dinitrogen tetroxide ) . " SV-Stoff " was used to cool the combustion chamber.
• Its composition is approximately 50 % triethylamine and 50 % xylidine, with the most common oxidizer used to burn it, nitric acid or its anhydrous nitric oxide derivatives ( classified as the Isp of approximately 216-248 at sea level, with the latter figure stated as a specification for the R-21 ( missile ) ( The Soviet Union's first Submarine Launched Ballistic Missile ) which was first fielded in 1963.