GLUCONO-DELTA-LACTONE We are manufactures,special producing glucono-delta-lactone,annully 6000tons.our company wintess ISOCERT: GLUCONO-DELTA-LACTONE1.PHYSICAL AND CHEMICAL CHARACTERISTICSGDL,white crystalline ... upon addition to water readlily froms an mixture of lactone gdl and gluconic acid.1% solution ph is ... weight:178.142.QUALITY STANDARD CONFIRM FCCIV,E-575,USP,GB7657-20053.USE GDL is a kind of ...