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Grubb's second generation catalyst is stable toward moisture and air. It has broader substrate scope, including sterically demanding or deactivated olefins such as 1,1-disubstituted olefins and α,β-unsaturated carbonyls.
Grubbs' Catalysts are a series of transition metal carbene complexes used as catalysts for olefin metathesis. There are two generations of Grubbs' Catalysts are present. These are Grubbs' Catalysts 1st generation catalyst and Grubbs' Catalysts 2nd generation catalyst.
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Gypsum is a white or nearly white, odorless, crystalline solid. Gypsum Board primarily used as a finish for walls and ceilings;plaster ingredients; Fertilizer and soil conditioner;It is also used in plaster of paris for casting moulds.It is also used in foot creams, shampoos and many other hair products.
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HATU is used for synthesis of Nα-urethane protected β-amino alcohols and peptide alcohols. The aspartate epimerization can be controlled during the coupling of caspase specific tetrapeptides with aromatic amines by HATU as a coupling reagent and 2,4,6-tri-tert-butyl-pyridine (TBP) as additive. Also used in rapid automated derivatization of solid-phase supports for oligonucleotide synthesis.
Hexyl CARBITOL Solvent offers slow evaporation and excellent solvency characteristics that contribute good flow and leveling to high solids coatings, directly impacting film properties.
HTR-30 is a strong acid formula effective in the removal of heat tint and metal discoloration caused by temperatures within the weld zone on stainless steel.
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Hafnium chemically resembles zirconium and is found in zirconium minerals. Its existence was predicted by Dmitri Mendeleev in 1869. It is used in filaments and electrodes. Some semiconductor fabrication processes use its oxide for integrated circuits at 45 nm and smaller feature lengths. Some superalloys used for special applications contain hafnium in combination with niobium, titanium, or tungsten. Hafnium's large neutron capture cross-section makes it a good material for neutron absorption in control rods in nuclear power plants, but at the same time requires that it be removed from the neutron-transparent corrosion-resistant zirconium alloys used in nuclear reactors.
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