492 
TeA Bil E20. 
Name of dye. 
Distribution in 
neutral solution 
Distribution in 
acid solution 
Distribution in 
alkaline solution 
Methylene blue 
(basic dyestuff). 
Crystal-violet 
(basic dyestuff). 
Chrysoidine 
(basic dyestuff). 
Fuchsine 
(basic dyestuff). 
“Neufuchsin” 
(basic dyestuff). 
Erythrosine 
(acid dyestuff). 
“Wasserblau bläu- 
Lich? Wk 
(acid dyestuff). 
Rose Bengale 
(acid dyestuff). 
Quinoline-yellow 
(acid dyestuff). 
Eosine 
(acid dyestuff). 
Roccelline 
(acid dyestuff). 
Patent blue 
(acid dyestuff). 
Crystal-ponceau 
(acid dyestuff). 
Congo-red 
Both layers about 
| equally blue. 
Much more in the 
alcohol layer. Both 
layers violet. 
Alcohol layer dark 
yellow to brown. 
Bottom layer pale 
yellow. 
More in the alco- 
hol layer. Both 
layers red. 
More in the alco- 
hol layer. Both 
layers red. 
About equal dis- 
tribution. Alcohol 
layer more orange 
like, the aqueous 
layer more red. 
About equal distri- 
| bution ; both layers 
| blue. 
Equal distribution. | 
Alcohol layer yello- 
wish brown, aqueous 
layer orange. 
| 
Equal distribution; | 
both layers yellow. 
About equal dis- 
tribution. 
Both layers red. 
Most in the alco- 
hol; both layers 
| blue. 
(substantive dyestuff). 
Alkali blue 6 R. 
Forms a colloidal 
solution in water, 
but little coloured, | 
reddish blue and 
opalescent. 
“Indulin spritlös- 
lich? 
In water an almost 
colourless colloidal 
solution. 
Little in the alco- 
hol layer ; aqueous 
layers red. 
Both layers red. 
Alcohollayer dark 
blue; aqueous so- 
lution colourless. 
Same asin neutral | 
solution. 
More in the alco- 
hol layer. This is 
violet, the aqueous 
layer green. 
Same as in neutral | 
solution but the 
colour is more 
brownish. 
Most in the alco- 
hol layer. Colour 
is much darker. 
Most in the alco- | 
hol layer. Colour | 
| red. 
All in the alco- | 
hol layer. Colour 
orange. 
Much more in the | 
alcohol layer, blue. 
All in the alcohol 
layer; light brown. 
Much more inthe | 
alcoh. layer; yellow. 
All in the alcohol | 
layer ; yellow. 
All in the alcohol 
layer; ‘red. 
Upper layer dark- | 
er, aqueous layer 
more greenish. 
Much more in the | 
alcohol layer. 
Blue deposit on 
the plane of de- 
marcation. 
As in neutral so- 
lution. Aqueous 
layer © somewhat 
| tinged. 
All with blue co- | 
lour in the alcohol 
‚ layer; aqueous layer | 
colourless. 
| 
| 
Nearly all in the 
alcohol layer, blue; 
aqueous layer some 
what tinged. 
All in the upper 
layer. The colour 
slowly changes to 
mauve. 
All in the alcohol 
layer. Colour violet. 
All in the alcohol 
layer. Colour dark 
yellow. 
Ed 
The colour vanishes. 
All dark brown in 
the upper layer. 
As in neutral solu- 
tion. 
All in the alc. layer. 
Colour orange,after- 
wards colourless. 
Much more in the 
alcohol layer; red. 
Much more in the 
alcoh. layer ; yellow. 
As in neutral solu- 
tion. 
Both layers red but 
much darker than in 
neutral solution. 
All in the aqueous 
layer. Dark blue. 
Little in the alcohol 
laver; aqueous layer 
| more brownish. 
| 
| 
| 
All in the alcohol 
layer; red. 
All in the alcohol 
layer with slight 
reddish colour. 
All with violet co- 
lour in the alcohol 
layer ; aqueous layer 
| colourless. 
