| 摘要 |
Compound for eliminating boiler scale is composed of 59.90-82.60 wt.% of water, 16.53-35.93 wt.% of phosphoric acid, 0.41-2.99 wt.% of citric acid, 0.08-0.30 wt,% of erysorbic acid, 0.08-0.36 wt.% of sodium fluoride silicate, 0.17-0.30 wt.% of sulfamic acid, 0.05-0.24 wt% of acid etching inhibitor. The compound is not harmful for human and does not act corrosively.
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