disodium citrate molecular structure, food antioxidant e331ii, ball and stick 3d model, structural chemical formula with colored

disodium citrate hydrogen alkacitron sesquihydrate acid salt of citric e331ii antioxidant additive food acidity regulator sequestrant molecule molecular structure chemical formula c6h6na2o7 3d model chemistry atom science preservative atomic compound organic biochemistry composition research health carbon education laboratory oxygen scientific skeletal bond artificial supplement biology medicine nutrition