… These two functions may each react according to their own nature, hence as alcohols, these compounds may give … pharmaceutical. The industrial acid ranges from yellow to brown in colour and has a disagreeable, very acid odour. The …
… of glass or plastics of different refractive indices. Those drawn from glass have a very thin coating of plastics, … to be of an exact diameter, the edges are ground; this is known as the centring and edging operation. This heading …
… solution), patina finishing, blueing (blue annealing), browning or bronzing (by various techniques), which also … those of manganese, iron and zinc; this process is known as parkerising or bonderising, depending on the period …
… emulsifying, wetting), which is why they are usually known as “surfactants”. However, products which are not … preparations based on surface-active agents are also known as detergents . This type of preparation is used for …
