| 摘要 |
FIELD: chemistry. ^ SUBSTANCE: invention relates to a dried composition for treating water, containing: calcium hypochlorite coated with a coating selected from hydrated halide, sulphate, phosphate, silicate or borate salts of alkali and alkali-earth metals, hydrated hydroxides of alkali and alkali-earth metals and combinations thereof; where content of active chlorine per total weight of the said dried composition ranges from approximately 20 wt % to approximately 80 wt %, and content of hydrate water per total weight of the dried composition ranges from approximately 10.2 wt % to 30 wt %, where said coating accounts for approximately 1% to 80% of the total weight of the dried composition, and where the said dried composition is classified as not belonging to oxidisig agents according to Division-5.1 or as Class 1 NFPA or Class 2 NFPA oxidising agent. ^ EFFECT: novel compositions for treating water. ^ 22 cl, 1 ex, 5 tbl, 4 dwg |
