… and the precipitation by sulphuric acid of the fatty hydroxyacids. These products are encountered commercially in … neutralisation of the free fatty acids with a base (sodium hydroxide), and consisting of a mixture of crude soap and …
… Other perchlorates . These include : barium perchlorate (hydrated powder) and lead perchlorate; the saturated … iodate (NaIO 3 ), potassium iodate (KIO 3 ) and potassium hydrogen di‑iodate (KH(IO 3 ) 2 ) are employed in medicine …
… These machines can be distinguished from tools (pneumatic, hydraulic or with motor) for working in the hand of heading … 84.61 ). (d) Tools for working in the hand, pneumatic, hydraulic or with self‑contained electric or non-electric …
… of iron filaments assembled in a glass tube filled with hydrogen or helium; these have the property of varying … sliding over a resistance coil; step‑by‑step rheostats; hydro‑rheostats with movable electrodes immersed in a liquid …
… acid , a poly(uronic acid), is extracted from brown algae ( Phaeophyta ) by maceration in an alkaline solution. It may … to atmospheric and chemical deterioration. (b) Rubber hydrochloride . Generally used in packaging, and, when …
… where it is injected into the soil for destroying insects, phylloxera, etc. For the latter use, the derived product … from arsenic or arsenous oxide by treatment with sulphur or hydrogen sulphide. (a) Diarsenic disulphide (artificial …
