TAA i.2.12a.2.07.recto

                                                                         (7)

Nature of Scarlet Colour

The colour is very easily rubbed off

The colour is insoluble in
     Water
     Alcohol
     Acetone
     Benzine
     Ammonia

The colour is soluble in
Hydrochloric acid (to a yellowish solution)
<Repeated 

Agreed>

The reddish brown colour is also insoluble in organic 

solvents but in soluble in HCl, forming a yellow 

solution.
Repeated – colour only partly sol. in HCl.