BOILING-POINTS OF PARAFFINS. 117 



Normal Iodides. 



Boiling-points. 



A. 



Observed. Calculated. Difference. 



o o 



Methyl, C H 3 I 40 40 o 



Ethyl, C 2 H 5 I 72 72 3 * 



Propyl, C 3 H 7 I 102 102 



Butyl, C 4 H 9 I 1296 130 



Pentyl, C g H n I 155-4 156 



Hexyl, C 6 H 13 I 179-5 180 2 * 



Heptyl, C 7 H 15 I 202 22 



Octyl, C 8 H 17 1 221 222 



Normal Bromides. 



Observed. Calculated. Difference. 

 Ethyl, C 2 H 5 Br 39 39 



32 



30 



Propyl, C 3 H 7 Br 71 71 



Butyl, C 4 H 9 Br 1004 101 



Pentyl, C 5 H u Br 128-7 **9 ^ 



Hexyl, C 6 H 13 Br 155 



Heptyl, C 7 H 15 Br 179 



Octyl, C 8 H 17 Br 199 201 



22 



Normal Chlorides. 



Observed. Calculated. Difference. 

 Ethyl, C 2 -H 5 CI 12-5 13 



Propyl, C 3 H 7 CI 464 46 



33 



Butyl, C 4 H 9 CI 77-6 7 7 3 * 



Pentyl, C 5 H n CI 106-6 106 2y 



Hexyl, C 6 H 13 C1 133 



Heptyl, C 7 H 15 CI 158 



Octyl, C 8 H 17 C1 180 181 



2 



23 



Normal Acetates. 



Observed. Calculated. Difference. 



Ethyl, C 4 H 8 2 74 74 



Propyl, C 5 H 10 O 2 102 101 2 ? 



Butyl, C 6 H 12 2 125-1 126 25 



Pentyl, C 7 H 14 2 148-4 149 23 



Hexyl, C 8 H 16 2 1687 170 2I 



Heptyl, C 9 H 18 2 189 *9 



Octyl, C 10 H 20 O a 207 208 J 9 



