Assertion: crude acetone | /r/HasProperty | obtained
Facets:
Source sentences:
text: The uncondensed vapors and gases, which is a crude mixture of acetone at 20 to 25%, leave the tower through duct 410 and enter condenser 411, the object of which is to concentrate them even more, whereby a great'portion of the water is returned to the concentration tower 408 through a reflux pipe 412, whilst the uncondensed gaseous products having a higher concentration of acetone, are discharged through discharge pipe 413 and enter refrigerator 414, wherein crude acetone is obtained, having a concentration of approximately 25 to 30%.