| 摘要 |
Polyaluminiumchloride aggregating agent, useful as purifying agent of water, were predpd. by polymn. of 85-90% aluminium chloride, 5-10% sodium hydroxide and 2-6% sodium sulfonate at 65-75≦̸Cfor 2-3 hr. Thus, 12-20% aluminium hydroxde and 80-85% hydrochloric acid(15 %)were reacted at 60-65≦̸C for 1-2 hr gave aluminium chloride. Obtained 85-90 % aluminium chloride, 5-10 % sodium hydroxide and 2-6 % sodium sulfonate were polyme. at 65-75≦̸C for 2-3 hr to give pH 3-3.5 polyaluminium chloride.
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