adrian2022
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Posts posted by adrian2022
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1 minute ago, studiot said:
I tried some old turmeric from my spice drawer in some Tesco limescale remover.
Unfortunately this limescale remover has a bright blue dye so the result was a bright green solution, with no hint of red.
The concentration of HCl is stated as 6.75g per 100g so appears a bit weaker than yours. I will have to calculate it's pH.
That is the best I can do on a Sunday evening.
Ok thank you for your help and time, I will go and buy another brand of tumeric and test it, I forgot to mention that if i add water to the solution it goes back to light yellow
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2 minutes ago, studiot said:
Well the pH of 30% HCl is less than 1 and MY turn from yellow at pH 2 to red at pH 1 so it could be present, depending upon how much HCl you added.
Do you know the source of your turmeric or its physical form ?
Its from my grocery store, I added tumeric to a container of hci not hci to tumeric if that matters, i took 2 picutures, second picture is with more tumeric added
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Hi, Sorry if my english is bad, I read that tumeric can be tested for Metanil yellow with hydrocloric acid, I used 30% hcl and added some tumeric and it turned pink, Added some more and it tured red :/ does my tumeric contain Metanil yellow?
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Metanil yellow in tumeric
in Inorganic Chemistry
Posted
I dont know how to calculate my ph, But i did another test on a pice of tumeric root and it turned pink also, Must be some contaminants in my hci or something else,
Found another test for metanil yellow but in pigeon peas https://www.studyrankers.com/2016/06/test-the-presence-of-starch-and-metanil-yellow.html