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Salt Iodisation - potassium iodate or iodide?

salt table salt iodine iodized

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#1 Nimra02

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Posted 18 December 2020 - 02:09 PM

Hello, according to the Canadian regulations, Salt sold to consumers in Canada for table and household use must be iodized with 0.01% potassium iodide. My understanding was that iodisation of salt is the primary goal, whatever the means. However, since the regulation specifically mentions "potassium iodide", does that mean we cannot use potassium iodate as the source of iodine? 

We have been producing iodised salt with potassium iodate, but have been unable to come up with a stable product while using potassium iodide. 

 

To summarise, I want to know if:

a) Salt iodised with potassium iodate can be sold in Canada?

b) How to stabilise and prevent iodine liberation when using potassium iodide as the source of iodisation of salt?

 

Any help from the experts would be highly appreciated! :)



#2 Nimra02

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Posted 01 January 2021 - 12:51 PM

Anyone? 



#3 Charles.C

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Posted 01 January 2021 - 02:24 PM

Hello, according to the Canadian regulations, Salt sold to consumers in Canada for table and household use must be iodized with 0.01% potassium iodide. My understanding was that iodisation of salt is the primary goal, whatever the means. However, since the regulation specifically mentions "potassium iodide", does that mean we cannot use potassium iodate as the source of iodine? 

We have been producing iodised salt with potassium iodate, but have been unable to come up with a stable product while using potassium iodide. 

 

To summarise, I want to know if:

a) Salt iodised with potassium iodate can be sold in Canada?

b) How to stabilise and prevent iodine liberation when using potassium iodide as the source of iodisation of salt?

 

Any help from the experts would be highly appreciated! :)

 

Hi Nimra,

 

Re - (a) -

^^^(red) - Assuming the text is  literally  implemented then, from a labelling POV, apparently not.

B.17.003  Notwithstanding section B.17.001, salt for ta-
ble or general household use shall contain 0.01 per cent
potassium iodide, with or without dextrose, sodium thio-
sulphate or sodium bicarbonate as a stabilizer of the io-
dide  and  the  presence  of  iodide  shall  be  shown  on  the
principal display panel.

 

(apparently valid to 2nd December, 2020)

 

Attached File  Canada, Food and Drug Regs.pdf   5.27MB   1 downloads

 

Presumably, within pdf, there would (somewhere) be further text if potassium iodate (KIO3) were permitted/required however I am not in Canada to be able to verify such logic.

.

"KIO" gave  no hits in above pdf.

"Potassium iodate" gave 2 hits in context of  flour and bread respectively.

 

Re - (b) - See quote above


Kind Regards,

 

Charles.C


#4 Scampi

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Posted 04 January 2021 - 07:01 PM

So i did a little research here and potassium iodate is what is used by ALL salt processors

 

 

FYI, Goderich Ontario Canada (an hour from me) has the worlds largest salt mine so I don't know if this is profitable for you to export to a country literally overflowing with salt....just a thought


Because we always have is never an appropriate response!


#5 Charles.C

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Posted 04 January 2021 - 09:33 PM

So i did a little research here and potassium iodate is what is used by ALL salt processors

 

 

FYI, Goderich Ontario Canada (an hour from me) has the worlds largest salt mine so I don't know if this is profitable for you to export to a country literally overflowing with salt....just a thought

 

Hi Scampi,

 

So do all salt processors put potassium iodate on the label ?


Kind Regards,

 

Charles.C


#6 Scampi

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Posted 05 January 2021 - 01:21 PM

WIndsor iodized table salt ingredients

SALT, CALCIUM SILICATE, SUGAR, POTASSIUM IODIDE.

 

Sifto iodized table salt ingredients

ALT, CALCIUM SILICATE, SODIUM THIOSULPHATE, POTASSIUM IODIDE.

 

 

Great Value Salt (USA)

Ingredients: SALT, SODIUM SILICOALUMINATE, DEXTROSE, POTASSIUM IODIDE, SODIUM BICARBONATE  (um ewe who wants baking soda in their salt???).

 

 

No, it would appear labeled at iodide

 

Caveat- it only has to contain potassium iodized if its LABELED as "table salt"  otherwise you can call it pickling salt or non iodized salt. It is iodized as it was determined Canadians were not receiving enough iodine in our diets for overall health


Because we always have is never an appropriate response!


#7 Charles.C

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Posted 05 January 2021 - 01:31 PM

WIndsor iodized table salt ingredients

SALT, CALCIUM SILICATE, SUGAR, POTASSIUM IODIDE.

 

Sifto iodized table salt ingredients

ALT, CALCIUM SILICATE, SODIUM THIOSULPHATE, POTASSIUM IODIDE.

 

 

Great Value Salt (USA)

Ingredients: SALT, SODIUM SILICOALUMINATE, DEXTROSE, POTASSIUM IODIDE, SODIUM BICARBONATE  (um ewe who wants baking soda in their salt???).

 

 

No, it would appear labeled at iodide

 

Caveat- it only has to contain potassium iodized if its LABELED as "table salt"  otherwise you can call it pickling salt or non iodized salt. It is iodized as it was determined Canadians were not receiving enough iodine in our diets for overall health

 

Hi Scampi,

 

So, to put it politely, the labelling misrepresents the contents.

 

Re- caveat - my quoted text in post 3 implies a wider scope ?


Kind Regards,

 

Charles.C


#8 Scampi

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Posted 05 January 2021 - 01:38 PM

Well, certainly anything bought from Walmart does

 

I never buy windsor-thought it tasted funny-now i know why

 

Also, there are allowances made on every label of Canadian food re: %/weight of the total----just like there are allowances for insects in Canada and the USA of in poultry.......................just sayin

 

as for the iodine portion

https://www.ign.org/...e-or-iodide.htm

 

https://www.scienced...as iodized salt.

 

https://thyroidresea.../1756-6614-6-10


Edited by Scampi, 05 January 2021 - 01:39 PM.

Because we always have is never an appropriate response!


#9 Charles.C

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Posted 05 January 2021 - 01:56 PM

Well, certainly anything bought from Walmart does

 

I never buy windsor-thought it tasted funny-now i know why

 

Also, there are allowances made on every label of Canadian food re: %/weight of the total----just like there are allowances for insects in Canada and the USA of in poultry.......................just sayin

 

as for the iodine portion

https://www.ign.org/...e-or-iodide.htm

 

https://www.scienced...as iodized salt.

 

https://thyroidresea.../1756-6614-6-10

Windsor sounds a superior brand. By permission ?

 

 

 

.


Kind Regards,

 

Charles.C






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