Is food-grade sodium metabisulphite toxic?Food grade sodium metabisulphite is a common additive in food, used to rid food of bad odors and to create a tart or salty flavor. But is a food-grade sodium metabisulphite toxic? In short, the answer is yes, food-grade sodium metabisulphite can be very dangerous if ingested in high doses. What is food grade sodium metabisulphite? Food grade Sodium...