Glucosamine Sulphate (Potassium Chloride Salt)

Glucosamine sulphate does not survive on its own as a dry powder - the free sulphate salt is deliquescent and breaks down in store - so the article the trade actually ships is a stabilised double salt, and it is one of the two glucosamine salts that dominate the joint category. Thovek supplies the potassium chloride form, (C6H14NO5)2SO4·2KCl, molecular weight 605.52, assayed at 98.0-102.0% on the dried basis against the USP dietary supplement monograph, with specific rotation +47° to +53°, loss on drying not more than 1.0% and residue on ignition of 26.5-31.0%. Where a buyer needs to keep potassium off the label we can supply the sodium chloride double salt instead, molecular weight 573.31, which carries its own residue-on-ignition window of 22.5-26.0% and a sulphate content of 16.3-17.3%. Origin decides the allergen and diet declaration, and the route is stated on every certificate of analysis. The classical process hydrolyses chitin recovered from shrimp and crab shell, which makes the finished powder a crustacean allergen and rules out vegan and vegetarian positioning. The alternative ferments plant-derived glucose with Aspergillus niger and converts the fungal chitin, giving a non-animal, shellfish-free material for vegan programmes and for buyers who want to avoid marine sourcing questions altogether. The two streams meet the same monograph and are chemically the same article; they are not interchangeable on a label. For the formulator the arithmetic matters as much as the chemistry. Glucosamine base is 59.2% of the 2KCl salt by molecular weight, so one gram of base needs 1.69 g of powder, and the balance is real inorganic weight - roughly 12.9% potassium and 11.7% chloride that has to be carried into the mineral declaration. The high residue on ignition is inherent to the article rather than a purity failure, and the powder is hygroscopic, so drums should be resealed immediately after sampling. Every lot ships with CoA, allergen and origin declaration, non-GMO statement, heavy metals, residual solvent and microbiological data. Buyers should also note that in several European markets glucosamine sulphate is registered as a medicinal product as well as being sold as a supplement ingredient, which changes both the dossier and the tariff heading at import.