Volume 1
Chemistry in space : from J. H. van 't Hoff's 'Dix années dans l'histoire d'une théorie' / translated and edited by J.E. Marsh.
- Jacobus Henricus van 't Hoff
- Date:
- 1891
Licence: Public Domain Mark
Credit: Chemistry in space : from J. H. van 't Hoff's 'Dix années dans l'histoire d'une théorie' / translated and edited by J.E. Marsh. Source: Wellcome Collection.
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![Phenylamidopropionic acid C,H,.CH,.CHNH,. COOH and trioxybutyric acid CH,OH(CHOH),CO,H1?. Phthalylamidocaproic acid CO,H,C,0,:N.CH.C,H, COOH and leucinephthaloylic acid? Galactocarbonie acid C,H,,0, ° Refutation of Contradictory Observations. — From time to time observations not in accord with the theory have been reported, but experience has constantly demonstrated their inaccuracy. The following compounds for instance :— Propyl alcohol CH,.CH,.CH,OH, reported active by Chancell*, Styrolene of Storax C,H,.CH.CH,, reported active by Berthelot °. Iodide of trimethyl-ethyl-stibine (CH,), C,H, Sbl, reported active by Friedlander °. B-picoline NC,;H,.CH,, reported active by Hese- kiel’. As to propyl alcohol, its apparent activity was due, according to Henninger *, to amy] alcohol. As to styrolene, I have been able to show® that its rotatory power is due to the presence of an active body of different composition. This body it is possible to isolate by repeated dis- tillation of ordinary styrolene. A certain quantity of metastyrolene formed by the heat remains each time in the retort, and a liquid collects in the receiver, having a higher rotatory power, the value of which agrees with * Journ. Chem. Soc. abs. 1887, 369, and Ann. Chem. Pharm. cexlv. 294. ? Ann. Chem. Pharm. ccxlii. 9, and Berl. Ber. xxi. 277. > Compt. rend. cvi. 286. * Tb. lxvili. 659, 726. SoAB1xiii. 618. ® Journ. f. Prakt. Chemie, Ixx. 449. ” Berl. Ber. xviii. 3091. § Private communication. * Maandblad voor Natuurwetenschappen, vi. 72; Berl. Ber. ix. 5. D](https://iiif.wellcomecollection.org/image/b33778735_0001_0045.jp2/full/800%2C/0/default.jpg)
