【摘要】 对新型的环保型保险粉和目前市售的保险粉作了对比试验，结果表明两种保险粉的 漂白效果比较接近，环保型保险粉可代替市售型保险粉，且环保型保险粉因溶解时无臭气， 有一定的环保作用。更多还原

【Abstract】 The test is compared with the bleaching effect of the sodium hydrosulfite between newfashioned protective and common one from market. The result of experiment showed that bleaching effect of two sodium hydrosulfite can replace that from market. The newsfashoned sodium hydrosulfite does not give off foulgas from solution when it melts. It has definite protecting effect to the environment.更多还原