Alkaloidal reagents/precipitants Flashcards
1
Q
Mayer’s
(Mercuric potassium iodide)
A
White/cream or slightly yellow ppt.
(+) alkaloid
2
Q
Marmers
(Potassium-cadmium iodide)
A
White ppt.
3
Q
Dragendorff’s
(Potassium-bismuth iodide)
A
reddish brown or Orange ppt
(+) alkaloid
4
Q
Wagner’s
(Iodine TS)
A
Reddish brown or red brown/brown ppt
(+) alkaloid
5
Q
Valser’s
(KI and mercuric iodide)
A
White ppt.
6
Q
Tannic acid
A
White or yellowish ppt.
7
Q
Hager’s
( Picric acid)
A
Yellow ppt
(+) alkaloid
8
Q
Van-urk’s test
A
Blue color (+ indole alkaloids)
9
Q
Vitali morin test
A
Coloration (+) alkaloids
10
Q
Thalleoquin test
A
Emerald green color
(+ quinoline alkaloid)
