... is higher than 50; the solubility in water is lower than 2g in every 100ml water.Quality Index:ItemStandard HG/T2770-1996First-GradeOur ... good flameproof effect;2. high polymerization degree, low solubility in water and low hygroscopicity;3. pH is near to neutral, ... for multistory building, ships, trains, cables, etc. 2. used in the flameproof treatment for woods, plywood, fiberboard, papers, fibers, ...