| 单词 | petrolic ether |
| 释义 | > as lemmaspetrolic ether petrolic ether n. now rare = petroleum ether n. at petroleum n. Compounds 2. ΚΠ 1899 T. C. Allbutt et al. Syst. Med. VIII. 497 Recipe, spirits of wine 200 grammes; petrolic ether, 5 grammes. 1924 Science 14 Mar. 243/2 Powder of Saponaria leaves..was extracted 6 hours with petrolic ether. 1949 Jrnl. Amer. Chem. Soc. 71 2588/1 After several washings with petrolic ether, the product was recrystallized five times from 80% ethanol. < as lemmas |
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