I just bought some borax from a local drugstore and was given a plastic bag with "borate na" written on it. Having read that some drugstores have given some boric acid instead of borax I asked the vendor if he was sure it was borax and not boric acid and he told me it was labeled "borate na" in his storage room.
Now I'm a cautious guy and I want to make sure this is indeed borax and not boric acid.
Is there a way to test this at home ? Like adding my powder to vinegar and see if it fizzles or not ?
I found out the The ph of Borax is about 9. 5 (so I guess it should fizzle in vinegar), boric acid has a ph of 3. 7 (http://www.merck-chemicals.com/boric-acid/MDA_CHEM-100765/p_HXeb.s1Lb5QAAAEW9.AfVhTl) (so I also guess it should not fizzle in vinegar).
Am I right about this?
Replied by Maria