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Disodium is a compound that is usually used as a food addictive.
The chemical formula of disodium guanylate is: C10H12N5Na2O8P.
The chemical formula for disodium phosphate is HNa2PO4
The chemical formula for disodium guanylate is C10H12N5Na2O8P
Na2HPO4 is disodium phosphate or disodium hydrogen phosphate.