... , with speical sourness that is as strong as 1.5 times of citric acid. Specifications: Item Unit Index Purity (base on C4H4O4 ... , curing accelerant and spice. Widly used in producing various carbonic acid drink, wine, concentrated solid drink, ice cream and other cold ... can replace malic acid, citric acid, for its acidity degree is 1.5 times of that of citric acid. Fumaric acid can be used as ...