Products Sulfites are added to pharmaceuticals, foods and personal care products as excipients and additives. They can also be naturally present in foods. Even the Romans used sulfur dioxide as a preservative for wine. Structure and properties Sulfites are the salts of sulfurous acid, which is extremely unstable and undetectable in water (H2SO3). Example sodium … Sulfites
Products Preservatives can be found in liquid, semi-solid and solid pharmaceuticals. They are also used for food and cosmetics. Structure and properties Preservatives belong to various chemical groups. These include, for example: Acids and their salts Benzoic acid derivatives, 4-hydroxybenzoic acid derivatives. Quaternary ammonium compounds Alcohols Phenols Preservatives can be of natural and synthetic origin. … Preservative
Products Sodium sulfite is used as an excipient in pharmaceuticals. It is also used for food and cosmetics. Structure and properties Pharmacopoeially monographed sodium sulfite heptahydrate (Na2SO3 – 7 H2O, Mr = 252.2 g/mol) exists as colorless crystals and is readily soluble in water. It can be prepared with, for example, sulfur dioxide and sodium … Sodium Sulfite
