Chemical Structure / July 19, 2018 / Serena Calhoun
by Gottlieb, Kotlyar, and Nudelman. By compiling the chemical shifts of a large number of contaminants commonly encountered in synthetic chemistry, the publica tion has become an essential reference, allowing for easy identification of known impurities in a variety of deuterated organic solvents.
Like aluminium and magnesium, titanium metal and its alloys oxidize immediately upon exposure to air. Titanium readily reacts with oxygen at 1,200 °C (2,190 °F) in air, and at 610 °C (1,130 °F) in pure oxygen, forming titanium dioxide. It is, however, slow to react with water and air at ambient temperatures because it forms a passive oxide coating that protects the bulk metal from further oxidation. When it first forms, this protective layer is only 1–2 nm thick but continues to grow slowly; reaching a thickness of 25 nm in four years.
We Also Think You’ll Like