MasterBlaster Posted January 28, 2017 Share Posted January 28, 2017 While reading up on chlorates I found this -"Never rub dextrin with chlorate through the sieve."- Its on a page about H3 on pyrodata.com I tried a search and couldn't find anything about it so I was hoping someone could elaborate on why this is? Thanks, Link to comment Share on other sites More sharing options...
Arthur Posted January 28, 2017 Share Posted January 28, 2017 Chlorates make sensitive mixtures. rubbing can be enough to initiate it in some mixes.1/ sieve the chlorate, remove or break the lumps.2/ sieve each other ingredient, each separately, remove or crush all lumps.3/ sieve the mixture through together a few times to mix it. -it should just flow through the sieve if the ingredients are fine enough. Have a complete set of tools for chlorates and chlorate mixes. never use BP tools for chlorates. UK regulation used to require a completely separate shed for chlorate work -nothing shared with other sheds. Link to comment Share on other sites More sharing options...
MasterBlaster Posted January 28, 2017 Author Share Posted January 28, 2017 Ok thanks, so just to be clear its just general sensitivity and doesn't actually have anything to do with dextrin specifically? Link to comment Share on other sites More sharing options...
OldMarine Posted January 28, 2017 Share Posted January 28, 2017 Dextrin is a fuel so that may be why the warning was issued. Link to comment Share on other sites More sharing options...
Mumbles Posted January 28, 2017 Share Posted January 28, 2017 Dextrin is a minor fraction of the fuel in H3. I know of no safety reasons why dextrin should not be screened with H3 or chlorates in general. Does Pyrodata.com have a lot of the information from the older "pyrosource" resource? If so, I suspect it's just carry over suspect information from that. Link to comment Share on other sites More sharing options...
MasterBlaster Posted January 29, 2017 Author Share Posted January 29, 2017 Ok thanks a lot, I was hoping that was the case. The only reference they have listed is Shizimu and he doesn't say anything about it, or even SGRS. Link to comment Share on other sites More sharing options...
Mumbles Posted January 29, 2017 Share Posted January 29, 2017 Dextrin or SGRS is in almost every single chlorate star composition, so I would assume any incompatibility issues would have been mentioned by now if they existed. The one binder that does have a potential issue is gum arabic. It's usually applied as a solution, which can go sour or become acidic over time. This can cause an issue and render the composition more sensitive or have other issues if used. If freshly prepared I believe it is fine though. Link to comment Share on other sites More sharing options...
MasterBlaster Posted January 29, 2017 Author Share Posted January 29, 2017 So another question, I understand the appeal of having separate tooling for chlorates in a commercial setting, but is it really necessary in small scale at home type stuff? I've been reading more about how chlorates may have gotten a bad rap and all the reasons for that so is using the same tooling just asking for trouble or can it be done safely? Link to comment Share on other sites More sharing options...
Arthur Posted January 29, 2017 Share Posted January 29, 2017 Chlorates make sensitive mixes, that's why it's used in first fire products (igniters etc). Chlorates also have some specific incompatibilities principally sulphur but several others exist. The risk of incompatibility problems is inversely proportional to your housekeeping skills.BUT you cannot ever clean sieve meshes and mills ( INC media), so you only share tools that you can and do clean perfectly. Link to comment Share on other sites More sharing options...
MasterBlaster Posted January 29, 2017 Author Share Posted January 29, 2017 Ok thanks, A mill jar and media I understand and what you say about screens too, ill save the sharing to my star pumps and the like then only. Link to comment Share on other sites More sharing options...
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