Inks manufacture inks manufacturers violet making how to make violet

Inks

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In 20 parts of fuming sulphuric acid dissolve 5 parts of indigo, and to the solution add 100 parts of extract of aqueous myrobalous and 10.5 parts iron filings or turning shavings. Finally add:

Gum ArabicЕЕЕЕЕ....Е..              1.5 parts
SugarЕЕЕЕЕЕЕЕЕ.....              7.5 parts
Sulphuric acid, 66░ BЕ...Е...            10.5 parts
Aniline blueЕЕЕЕЕЕ.......              1.5 parts
Carbolic acidЕЕЕЕЕЕ.....              0.5 parts
Myrobalan extract to make....           1,000 parts