| 摘要 |
Dioctyl phthalate as plasticizer is recovered by reacting warm water, 80≦̸C and 20% H2SO4 ! to waste soln. by-product of dark reddish green layer produced from prepn. of dioctyl phthalate for 4hr at 74-76≦̸C. Thus, waste soln. of 300ml was mixed, reacted with warm water of 100ml and H2SO4 of 100ml at pH 2, 76≦̸C to give dioctyl phthalate recovery quality of 120ml.
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