Food additive Glucono Delta Lactone is white crystal powder, almost odourless, taste sweet after the first acid, soluble in water, insoluble in ether. Glucose residue is less than 0.2%, the particle size < 40 mesh. GDL, white crystalline powder, almost odorless,freely soluble in water(60g/ml),has a slightly sweet taste, then sour, sparingly soluble in ethyl alcohol(1g/100ml),almost insoluble ether. Upon addition to water readily forms an mixture of the lactone gdl and gluconic acid. 1% solution ph is 3.5, after 2H,PH is 2.5, about 153 decomposition Molecular Formula C6H10O6 Molecular Weight 178.14 CAS Number 90-80-2 EINECS number 202-016-5 E Number E575