464 
SECOND REPORT —I832. 
the sulphuret of carbon in the gaseous state from 16° to 139° F. 
He found its boiling point to be 116° F., and its vapour at 139° 
sustained a column of mercury of 40*8 Parisian — 43*49 English 
inches. His experiments seem to show that Dalton’s law that 
the tension of ail volatile bodies is equal, an equal number of 
degrees above and below their boiling points, does not hold in 
this compound. 
Muriate , liydriodate , and hydrobrornate of phospliuretted 
hydrogen. —One of the many interesting facts lately made out 
in regard to phospliuretted hydrogen is, that it has decidedly 
the properties of a base, and is capable of forming definite cry- 
stallizable compounds with the hydrogen acids. 
The first known of these, the liydriodate , was discovered by 
Dulong, and has been lately studied by Serullas *. The easiest 
mode of preparing it is to introduce into a retort sixty parts 
of iodine, fifteen of phosphorus, and eight or nine of water, and 
apply a gentle heat. Hydriodic acid and phospliuretted hydro¬ 
gen are generated at the same time, and uniting in the nascent 
state condense as a white sublimate in the upper part of the 
retort. From these quantities twelve or fifteen parts of the com¬ 
pound are obtained. A little hydriodic acid passes off in the 
gaseous state, and may be condensed in water. It crystallizes in 
cubes, volatilizes at about 290° F., and is not decomposed by a 
red heat. In vapour it is inflammable; water decomposes it, 
giving off non-inflammable phospliuretted hydrogen. Chloric, 
bromic, and iodic acids, and their salts of potash, decompose it 
with flame at common temperatures ; nitric acid does the same, 
but nitrate of potash, perchloric acid, and perchlorate of potash 
require the aid of heat. Nitrate of silver in powder strewed 
upon the salt causes an instant production of iodide and phos¬ 
phate of silver. With oxide of silver iodide of silver is pro¬ 
duced, and a spontaneously inflammable phospliuretted hydro¬ 
gen. This compound consists, according to Rose, of one atom 
of each constituent, or it is (I + H) H- (P + 3 H). 
The hydrobromate was discovered by Serullas f. It may be 
obtained by bringing together phospliuretted hydrogen and 
hydrobromic acid in the gaseous state, when they condense on 
the sides of the vessel into cubical crystals, which may be pre¬ 
served in close bottles. 
The muriate has not yet been obtained in a separate state ; 
but Rose has formed a compound of this muriate with the sub¬ 
chloride of titanium from which its separate existence may be 
inferred. The formula for this double chloride is 3 (Ti + 2 Cl) 
* Annates de Chimie, tom. xlviii. p. 98. 
f Ibid. p. 90. 
