Sciencemadness Discussion Board

calcium chlorate

jhonn - 19-11-2012 at 04:48

Can calcium chlorate be prepared the same way as sodium chlorate(electrolysis)? It has a better oxygen content than potassium chlorate, but i don't know if it can be prepared that way. Also, i don't know if this salt is hygroscopic, or safe to use in pyrotechnics. Any information about this salt will be appreciated.

hissingnoise - 19-11-2012 at 05:14

Calcium chlorate is deliquescent, making it very awkward for use in pyrotechnics . . .

blogfast25 - 19-11-2012 at 10:19

Quote: Originally posted by jhonn  
Can calcium chlorate be prepared the same way as sodium chlorate(electrolysis)? It has a better oxygen content than potassium chlorate, but i don't know if it can be prepared that way. Also, i don't know if this salt is hygroscopic, or safe to use in pyrotechnics. Any information about this salt will be appreciated.


I'm no pyroguy but a birdie told me chlorates are generally 'out' for pyrotechnics (flash powder/shock sensitivity of chlorate containing pyromixes) and that perchlorate is much preferred for that reason.

Xenoid - 19-11-2012 at 10:30

Check out dann2's site here;

http://www.oxidizing.110mb.com/chlorate/calcium.html

The main problem (apparently) is the build-up of Ca(OH)2 (lime) on the cathode.

Mush - 10-5-2014 at 09:45

CHLORATES AND PERCHLORATES
THEIR MANUFACTURE, PROPERTIES AND USES

Department of Chemistry and Chemial Engineering
Southwest Research Institute

http://www.dtic.mil/dtic/tr/fulltext/u2/242192.pdf

GB183671
Production of calcium chlorate
Attachment: GB183671A.pdf (1017kB)
This file has been downloaded 375 times

Purifying calcium chlorate
US1949204

Manufacture of calcium chlorate
US1887809

Manufacture of basic calcium chlorate
GB601928

Preparation of solutions of calcium chlorate poor in chloride
GB615438

Improved Means for Effecting the Absorption of Chlorine Gas applicable in the Manufacture of Chlorates and Bleaching Liquor.
GB189620068

On some recent improvments in industrial chemical processes
Journal of the Society of Chemical Industry
Volume 1, Issue 2, pages 39–49, February 1882
(Pages 40-42)
Attachment: phpklOG2p (1.3MB)
This file has been downloaded 798 times

[Edited on 10-5-2014 by Mush]

Brain&Force - 10-5-2014 at 10:50

Wouldn't it also contaminate the flame color as well?

For pyro mixtures potassium chlorate is your best option (it has really weak emissions and is very easy to color). woelen's site also has some stuff with cesium chlorate.