Investigations dealing with the State of Aggregation. 411 



Brilliant Congo B. (Berlin Actie7i-Gesellschaft.) 

 100 c.c. contained 0'14 per cent, solid, dried at 100° C. 



Sodium Salts. 







0. 



Formate 



500 + + + 



250 





500 + + + 



250 





500 + + + 



250 





500 + + + 



250 





500+ + + 



250 





500 + + + 



250 





500 + + + 



250 





500 + + + 



250 





500 + + + 



250 



(Hydro) Chlorides. 



Sodium 500+ + + 250 



Ammonium i — ]>500 



Monomethylamine 1 — . >500 



Trimethylamine ' — >500 



Dimethylamine 1 — >.500 



Tetraethylammonium — >500 



Piperidine - >600 



Triethylamine I — >500 



Benzylamine ... | 500+ + + 250+ + 125 



Isoamylamine I — ; >500 



Hexylamine ' 200+ + + 125+ + 62-5++ : 31-25 



Zsigraondy's Scarlet Gold sol. 



Prepared by Zsigmondy's method* by reducing gold chloride with formal- 

 dehyde. 



Sodium Salts. 





Strength in millimols per litre giving change 

 in colour. 



r. 



Formate 



Lactate 



Acetate 



Dichloracetate 



Trichloracetate 



Benzoate 



21-87b, 18-75m 



28 -12 b, 25 m, 21 -87 m 



21 -87 b, 18 -75 m 



25 b, 21 -87 m 



18 -75 b, 15 -62 m, 14 -06 m 



18 •75 b, 15 -62 01 



25 b, 21 •87 m, 18 '75 m 



31 •25 b, 28 •12 m, 25 m, 21 -87 m, 18 75 m 



37 -5 b, 31 •25 m, ^ ^12 m 



15 -62 



18 -75 

 15 -62 

 18-75 

 12 -5 

 14-06 

 15 -62 

 15 -62 

 25 -0 



b = blue ; m = mauve ; r = red. 



♦ ' Zeitschr. f. Electro-Chem.,' vol. 4, p. 546 (1898). 

 VOL. XC. — B. 2 K 



