( S18 ) 



SOLIDIFYING POINTS OF « AND /Ï-THIOPHEN1C ACID AND THEIR MIXTURES. 



%« 



°/. 



P 



1 st solidifying point 2 nd solidifying point 



100 

 99.01 

 98.25 

 96.56 

 94.3 

 93.60 

 90.60 

 88.20 

 85.82 

 85.0 

 79.45 

 77.45 

 75.3 

 74.00 

 69.45 

 66.20 

 63.35 

 59.70 

 58.0 

 55.0 

 50.85 

 42.50 

 38.9 

 33.60 

 23.80 

 14.0 



5.4 











0.99 

 1.75 

 3.44 

 5.7 

 0.40 

 9.40 

 11.80 

 14.28 

 15.0 

 20.55 

 22.55 

 24.7 

 25.40 

 30.55 

 33.80 

 36.65 

 40.30 

 42.0 

 45.0 

 49.15 

 57.50 

 61.1 

 00.40 

 76.20 

 86.0 

 94.6 

 100 



126.2 

 125.4 

 125.1 

 124.6 

 124.1 

 123.4 

 122.2 

 121.3 

 120.3 

 120.1 

 117.7 

 117.2 

 116.3 

 116.0 

 114.3 

 113.3 

 112.5 

 111.5 

 111.0 

 112. G 

 115.0 

 119.6 

 121.2 

 124.0 

 128.2 

 132.6 

 136.3 

 138.4 



123.9—124.4 



123.1—123.6 



121.0 



± 118 

 ± 116.6 



113.5—114 



112 —112.6 



110.8—111.2 

 ± 110.0 



110 —111 



140.5—110.8 



110.8 



110.5 



110.7 



110.8 



110.7 

 id. 



111.2 



116.5—117.5 

 123— 124 (±123.. "J ) 



129.5—129.8 



134 —134.3 



It appears that the series of mixed 

 side at 25°/ /2-acid, and on the other 

 is a euteetic point at 42.5°/ /?-acid at 



crystals is interrupted on one 

 side at 61° / ; and that there 

 a temperature of 111°. 



