Sciencemadness Discussion Board

Strontium perchlorate via mechanical chemistry

The WiZard is In - 11-8-2011 at 06:48

US Patent 1,824,101
George Frederick Smith, Of Urbana, Illinois
Strontium Perchlorate Composition and Process of Preparing the Same
22 September 1931
http://tinyurl.com/Sr-Perchlorate-Patent

It has hitherto been supposed that the only useful strontium perchlorate was the
practically pure substance, and that it could be prepared commercially only by
reacting on a suitable strontium compound with perchloric acid.

According to the present invention a somewhat impure strontium perchlorate may
be prepared which is commercially as useful as the pure substance, and from this the
substantially pure salt may be prepared if desired.

Strontium carbonate was ground in a ball mill in the cold with ammonium
perchlorate in the proportions theoretically required, viz. one molecular equivalent
of the carbonate to two of the perchlorate. These reacted to the extent of about 13%
after grinding for twenty-four hours.

The ground material was transferred to an oven and kept at a temperature close to
250° C. It was found advantageous to briquette the ground material as by
compressing it into tablets by a high-pressure power driven pill machine. When this
was done a fifty per cent, yield of strontium perchlorate was obtained at the end of
twenty-four hours heating in the oven.




hissingnoise - 11-8-2011 at 08:06

From Cheap-Chemicals.com;

[[NH4ClO4] 200 micron white powder
Oxidizer
Ammonium perchlorate and the other perchlorate salts are used in a wide range of applications, lubricating oils, textile dye fixing, electronic tubes, tanning and finishing leather, rubber manufacturing, electroplating, aluminum refinishing, automobile air bag inflators, paint and enamel production, and pharmaceuticals. It’s also used in combination with antimony oxides as a yellow pigment in glass and porcelain.]

Loads of applications, with one notable exception . . .

The WiZard is In - 11-8-2011 at 11:19

Quote: Originally posted by hissingnoise  
From Cheap-Chemicals.com;

[[NH4ClO4] 200 micron white powder
Oxidizer
Ammonium perchlorate and the other perchlorate salts are used in a wide range of applications, lubricating oils, textile dye fixing, electronic tubes, tanning and finishing leather, rubber manufacturing, electroplating, aluminum refinishing, automobile air bag inflators, paint and enamel production, and pharmaceuticals. It’s also used in combination with antimony oxides as a yellow pigment in glass and porcelain.]

Loads of applications, with one notable exception . . .



Sorry this doesn't compute. Post was concerned w/ making
strontium perchlorate from ammonium perchlorate....

hissingnoise - 11-8-2011 at 11:50

Quote:
Sorry this doesn't compute.

Thanks WiZ, but your apology really isn't necessary . . .