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Sigma-Aldrich technical grade 25% sodium chlorite solution 28 Sep 2021 09:51 #71399

  • drdavid
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Hello, is it ok to use the technical grade 25% sodium chlorite solution from Sigma-Aldrich instead of making the MMS from sodium chlorite flakes?

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Sigma-Aldrich technical grade 25% sodium chlorite solution 01 Oct 2021 08:30 #71485

  • mart1n
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Sigma Aldrich was taken over by Merck. I don't know whether this made a difference in the composition of the so called 20% of "stabilizing salts ". But you may want check and compare data sheets from several products and pick the one with the least toxins.
I found my Sigma Aldrich NaClO2 to contain a long list of stabilizing "salts" that are rather toxins, heavy metals and more. I will still use it but only to make CDS.
It may be that any toxic substances in these stabilizing salts are being neutralized in the process of generating chlorine dioxide. 

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Sigma-Aldrich technical grade 25% sodium chlorite solution 01 Oct 2021 17:27 #71493

  • dragon88
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hello mart1n you seem to have good knowledge about chlorine dioxide related stuff!  I am having difficulty to find a more pure version of Hcl I don't want to buy HCL from hardware store because of impurities in it.  I appreciate if you know where to buy  ACS or  Reagant grade HCL .  Appreciate your help.

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Sigma-Aldrich technical grade 25% sodium chlorite solution 01 Oct 2021 18:14 #71494

  • Gyuri
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I bought 37% HCL on ebay .Just needed to reduce to 4%
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Sigma-Aldrich technical grade 25% sodium chlorite solution 01 Oct 2021 18:16 #71495

  • Gyuri
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Ebay search :  food grade hydrochloric acid
 

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Sigma-Aldrich technical grade 25% sodium chlorite solution 01 Oct 2021 23:36 #71499

  • mart1n
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I am having difficulty to find a more pure version of Hcl I don't want to buy HCL from hardware store because of impurities in it.

Sorry can't help you with that. I went from using citric acid to hardware store HCL long ago. Probably not the purest form of HCL compared to decent food grade or pharmaceutical grade but it works. We call it "salt acid" where I am. That would be muriatic acid in English I guess. Nowadays I'm not sure if I would pay for and prefer made in china pharma grade over more locally manufactured muriatic acid sold in hardware stores.
I do stay away from muriatic acid that has added color.
Not quite what you asked for but mentioning in case there are people reading that soon may be unable to shop online.
Another option is extracting pure HCL from muriatic acid:  www.mmsinfo.org/infosheets/hcl_from_muriatic_acid.pdf  
 
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