Iron in food grade sodium bicarbonate

[karsie]

Hi all, I have been using ETI Soda food grade bicarbonate for a while now, baking it according to the recipe (https://www.etisoda.com/en/food-grade-sodium-bicarbonate/) and I just received my ICP test with some elevated Iron at 17.9 ug/l the supplier says that the bicarbonate can contain a maximum of 1% iron. With this information does that mean that the product is not pure enough and can cause problems eventually? The color of the mixture is slightly yellow.

 

[taricha]

If my baking soda were yellow, I'd find another source.

 

[karsie]

If my baking soda were yellow, I'd find another source.

Well the powder is pure white of course. Only after baking and mixing with RO a slight yellow discolouring appears. Which I know think is the Iron oxidizing.

 

[Randy Holmes-Farley Verified Community Expert]

That iron level in the tank is no concern, but what form of iron does it say is present?

 

[Randy Holmes-Farley Verified Community Expert]

Actually, the link says 10 ppm max, not 1%

 

[karsie]

Actually, the link says 10 ppm max, not 1%

I see.. This means it cannot be the source of the higher Iron contents in the water.