﻿184 Quarterly Abstract of European Chemistry. 



The Combinations of Phosphorus and Hydrogen, by P. Thenaed, 

 (Compt. Rend. April, 1844, p. 652.)— In this research the chief thing 

 worthy of notice is the discovery of a new compound of hydrogen and 

 phosphorus, which is liquid at 10° C. (50° Fah.) and spontaneously inflam- 

 mable in the highest degree. The smallest quantity of it imparts to hy- 

 drogen and phosphate of hydrogen not spontaneously inflammable, the 

 property of igniting immediately upon being brought in contact with the 

 air. M. Thenard concludes that the so-called spontaneously inflamma- 

 ble phosphate of hydrogen is not a distinct gas, but the other gaseous 

 phosphate of hydrogen holding in suspense a small quantity of this 

 fluid. It can be obtained by passing the ordinary inflammable phosphate 

 of hydrogen through U tubes kept at 20° below 0° C, (= -2° Fah.) when 

 it will be found to separate itself from the gas in the form of a limpid 

 fluid. Composition Ph H 2 . The discovery of this compound tends to 

 clear up all obscurity connected with the history of phosphuretted hy- 

 drogen, and explains the cause of the want of uniformity in the analy- 

 sis of this gas by various chemists. 



Partial Reduction of the Binoxide of Copper by Heat, by Favhe 

 and Maumene, (Compt. Rend. April, 1844.)— The binoxide of copper, 

 when heated to the temperature of melting copper, loses eight tenths 

 of its oxygen, and is transformed into Cu 5 O 3 . This points out the 

 necessity of observing some precaution in mineral analysis where the 

 copper is estimated as the binoxide. 



Albumen 

 700. W 



1844 



w '■ * ^ \~ -«-j".» -.*v-i*«. *-j~" 7 



)— It has been generally supposed that albumen owes its solu 

 bihty in water to alkalies or certain salts present in the fluids gene- 

 rally containing it. Wurt * 



albumen 



is soluble in distilled water ; and to procure the substance perfectly 

 pure, he proceeded as follows. The white of eggs mixed with twice 

 its volume of water is passed through a piece of linen to break the cells, 

 to this a little subacetate of lead is added, which determines an abundant 

 precipitate; (care must be taken not to add an excess of the salt of lead, 

 as the precipitate might be redissolved.) The precipitate is washed and 

 suspended in water, through which a current of carbonic acid gas is 

 made to pass. The albuminate of lead is thus decomposed, the albu- 

 men being dissolved by the water. The filtered solution still contains 

 i tie lead, which may be got rid of by adding a few drops of hydro- 

 a nt| UnC ik ° ld ' then heating with P recau ti°n to 60° C. so as to coagulate 



formed P ^ **"* WUI CaiTy d ° Wn wi,h h the * ul P huret of ,ead 

 nure „ih P ° rate at a temperature of 50° C, and the residue will be 



L«tP -T? W I l,Cn haS a Slight acid reaction > decomposing the car- 



acTd 1 1 UK T ° ate ° f S0da ' with the disengagement of carbonic 

 acid, and the formation of a neutral salt. 



