"In my book it is a protected fortress which is the centre of an evil empire controlled by the book's villain, Stannic
* Some post activators perform their function by oxidizing the stannous tin layer that surrounds the palladium to stannic
tin, creating a more catalytically active particle.
The rinse will remove excess catalyst and convert the stannous tin to stannic
. The rinse water at this step takes on a cloudy appearance due to the conversion of the stannous tin.
Smoke tubes of the second type, manufactured by companies such as SKC, Inc., and Mine Safety Appliances Company (MSA), contain stannic
chloride sorbed onto pumice.
If something is 'stannic
' which metal does it contain?
Chang, "Determination of stannous chloride and stannic
bromide speciation in concentrated Cl- and Br- media by cyclic voltammetry," Journal of Electroanalytical Chemistry, vol.
where the Sn[O.sub.2] is stannic
oxide ([Sn.sup.++++]) and is transferred to stannous oxide ([Sn.sup.++]) after the etching reaction.