232 CHEMICAL GERMAN 



X. pulverisieren, t., to pulverize. 

 Pyroweinsaure, see Brenzweinsaure. 



a 



Quantitat, /., -en, quantity. 



Quantum, n., -ten or -ta, quantity or portion. 



Quarz, m ., quartz. 



Quecksilber, n., mercury. 



Quecksilberfaden, m., the mercury column of a thermometer. 



Quecksilbersaule, /., mercury column (e. g., of a barometer or gas burette). 



Quetschhahn, m. f -hahne, pinchcock. 



E 



Racemkorper, m., Razemkb'rper, -, an optically inactive body, whose inactive 

 character results from the presence of equal quantities of the dextro- 

 and laevo-rotatory modifications of the same substance. 



racemisch, racemic. 



ratselhaft, enigmatical. 



raffinieren, t., to refine. 



Rahmen, m., -, frame, limitations. 



raten, t., to advise. 

 V- Rauch, m., smoke. 



Rauchgas, ., flue gas. 



Rauchquarz, m., smoky quartz. 



Rauminhalt, m., volume, capacity. 



Reagens, n ., Reagenzien, reagent. 



reagieren, i. t (auf), to react upon. 



Reaction, Reaktion, /., -en, reaction. 



Reaktionsmasse, /., mass resulting from a reaction. 



Rechtsweinsaure, /., dextro-rotatory tartaric acid. 



Redaktion, /., editorial office of a publication, considered apart from the 

 persons engaged in editing. 



reducierbar, reduzierbar, reducible. 



reducieren, reduzieren, t., to reduce. 



Referat, n., -e, a short abstract of an article. 



regelmassig, regular. 



reichhaltig, abundant, extensive. 



Reichtum, m., -tiimer, riches. 



Reihe, /., -n, series. 



Reihenfolge, f. t succession, sequence. 



rein, pure. 



Reindarstellung, f. f process of preparation of a substance in pure form. 



Reinheit, /., purity. 



