BENZYL PHOSPHINES AND THEIR DERIVATIVES. 581 



The substance had the following properties : — 



(1) When heated most of it appeared to volatilise unchanged, but at the same time a 

 slight odour of the primary phosphine was noticed. 



(2) Chloride of platinum gave no sparingly soluble nor crystalline compound. 



(3) Bromine vapour liquefied it, while the addition of liquid bromine caused the 

 disengagement of heat and escape of hydrobromic acid. 



(4) Its aqueous solution when mixed with corrosive sublimate remained clear, but on 

 warming the mixture a colourless amorphous precipitate was suddenly produced. 



(5) When iodide of cadmium was added to its hot aqueous solution oily drops separated 

 out, and these gradually solidified, the resulting crystals being minute cubes or quadratic 

 forms, very refractive to light. This compound was very sparingly soluble. 



(6) Iodide of zinc gave an oily precipitate, which refused to crystallise. 



(7) Stannic chloride and stannous chloride both gave white precipitates — probably con- 

 sisting of minute oily drops. 



The iodide of cadmium compound was prepared several times, and analysed with the 

 following results : — 



Analysis of Cadmium Iodide Compound. 



(I.) 



0-6448 aavei °" 3764 A S T =0 ' 2034 * = 31 ' 5 P er cent 

 Ub448 gave | . 0796 CdO = . 0796 Cd = 12 . 3 m 



(II.) A different specimen. 



( 0-9687 Agl =05235 I =2865 per cent. 

 1-8267 gave | . 2676 CdO = . 2341 Cd =12 - 8 1 „ 



n ,„ Q f 08559 CO 2 = 0-2334CO 2 =4074 „ 



oa/zy » | 01979 H 2 = 0021989 H = 3-84 „ 



(III.) A different specimen recrystallised from water. 



1-2994 { re( l uired 29 ' 8 c-c^AgNOj = 0-37846 I = 29-12 per cent, 

 (gave 01783 CdO =0156012 Cd = 1200 



(IV.) A different specimen. The substance was burnt with pure oxide of copper, and 

 the phosphorus determined by molybdate, &c. 



0-497 gave 0-1471 Mg 2 P 2 7 = 0041081 P = 826 per cent. 



(V.) The same specimen as IV., the analysis being performed in the same way. 



03109 gave 0-0919 Mg 2 P 2 7 = 0025665 P = 8"25 per cent. 



(VI.) The specimen was prepared from pure crystalline oil. 



n *m a f 08980 C0 9 = 0244909 C = 40-75 per cent. 



06010 gave J Q ^ Q H ^ = ( , 230 H = 382 „ 



11950 eave { 0-6845 Agl =0369921 I =30-95 „ 

 g t 01550 CdO = 0135625 Cd = 11-34 



