Questions From the volume of the saturated ammonium sulfate added to the protein solution at the onset of precipitation, calculate the salt concentration in terms of percent saturation.n a typical protein preparation or purification step carried out in a laboratory where the aim is to isolate a small quantity of a product for structural or kinetic studies, a saturated ammonium sulfate solution is routinely used. It is also the procedure taken in this experiment.
Phenolic sheet Another market for Bakelite resin was the creation of phenolic sheet materials. Phenolic sheet is a hard, dense material made by applying heat and pressure to layers of paper or glass cloth impregnated with synthetic resin. : 53 Cellulose paper, cotton fabrics, synthetic yarn fabrics, glass fabrics and unwoven fabrics are all possible materials used in lamination.
Phenolic (Bakelite) --. History - The first truly synthetic plastic was invented by Leo Baekeland - a Belgium chemist living in New York. Baekeland was already very rich as he had invented the first commercially successful photographic paper and sold it to George Eastman in 1898 for $1 million.