STOKES.] 
HIGHER CHLOROXITRIDES. 
133 
colorless to white; transparent, and have a perfect basal cleavage." 
(See fig. 7.) 
It is scarcely attacked by boiling water, but it' kepi in moist air it 
very slowly evolves hydrochloric acid. Its ether solution, shaken with 
water, slowly gives a metaphosphiinic acid; sirupy chlorhydrines are 
formed as intermediate products. 
Heptaphosphonitrilic chloride, P 7 X 7 C1 ]4 . — After mauy distillations, 
this gave : 
1 
Calculated for 
l'r-\' 7 Cl 14 . 
Found. 
26.:.; 
12. 12 
61.28 
P 26. 75 
X 12.11 
CI 61.14 
P : X : Cl = l : 1.01 : 2.02. 
Molevular weight. (Solvent, benzene.) 
■ 
Grams 
solvent. 
Grams 
substance. 
(degrees). weignt. theoretical. 
47.09 
47.09 
3.5621 
7. 3979 
0.250 
523 
808 —l I. 5 
802 —1. 2 
Calculated for l'-X ( 1 ,, 811.7. 
Heptaphosphonitrilic chloride is a nearly colorless, rather viscous 
liquid, which does not solidify at —18°, and which boils at 289°-294° 
(corrected) at 13 millimeters, undergoing some polymerization. It is 
readily miscible with benzene, gasoline, and ether, and toward water 
shows the stability manifested by the preceding chloronitrides. 
Residua] oily phosphonitrilic chlorides. 1 — The residue, which did not 
distill at 13 millimeters when the temperature of the bath was 370°, was 
boiled with water to remove the solid polyphosphonitrilic chloride, 
filtered, and carefully dried in vacuo over sulphuric acid. It is a thick 
liquid which gave on analysis: 
Calculated for 
(PNCl 2 )x. 
Found. 
p 
26. 15 
12.11 
til. 11 
26. 7'.' 
12.39 
62.00 
X 
CI 
P : N : Cl = l : 1.02 : 2.02. 
1 It is unlikely that these consist entirely of the original depolymerization products; a portion is 
Umhtless formed hy polymerization during distillation. 
