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Density ρ) 1.20–1.22 g/cm 3 ... Class VI is the most stringent of the six USP ratings. ... GE began production under the name Lexan in 1960, creating the GE ...
Dr. Daniel W. Fox and LEXAN polycarbonate. Dr. Daniel W. Fox (May 14, 1927 – February 15, 1989) was an American polymer chemist who is often regarded as the father of LEXAN. LEXAN is the flagship product of SABIC Innovative Plastics (formerly GE Plastics) and is used in everything from CDs and
The synthesis of GeTe nanocrystals of average size of 8, 17, and 100 nm involves divalent Ge(II) chloride – 1,4 dioxane complex and bis[bis(trimethylsilyl)amino]Ge (II) and trioctylphosphine-tellurium in a solvent such as 1,2-dichlorobenzene or phenyl ether. Ge(II) reduction kinetics has been thought to determine the GeTe formation.
Its amorphous density at 25 °C is 1.27 g/cm 3 (.046 lb/in³). It is prone to stress cracking in chlorinated solvents. Polyetherimide is able to resist high temperatures while maintaining stable electrical properties over a wide range of frequencies.
General Electric in Schenectady, New York, aerial view, 1896 Plan of Schenectady plant, 1896 [18] General Electric Building at 570 Lexington Avenue, New York. During 1889, Thomas Edison (1847–1931) had business interests in many electricity-related companies, including Edison Lamp Company, a lamp manufacturer in East Newark, New Jersey; Edison Machine Works, a manufacturer of dynamos and ...
Germanium monoselenide is a chemical compound with the formula GeSe. It exists as black crystalline powder having orthorhombic (distorted NaCl-type) crystal symmetry; at temperatures ~650 °C, it transforms into the cubic NaCl structure. [3]
Germanium disulfide or Germanium(IV) sulfide is the inorganic compound with the formula Ge S 2. It is a white high-melting crystalline solid. [1] [2] The compound is a 3-dimensional polymer, [3] [4] in contrast to silicon disulfide, which is a one-dimensional polymer. The Ge-S distance is 2.19 Å. [3]
Germanium is a chemical element; it has symbol Ge and atomic number 32. It is lustrous, hard-brittle, grayish-white and similar in appearance to silicon . It is a metalloid or a nonmetal in the carbon group that is chemically similar to silicon .