PRUSSIAN BLUE
\pɹˈʌʃən blˈuː], \pɹˈʌʃən blˈuː], \p_ɹ_ˈʌ_ʃ_ə_n b_l_ˈuː]\
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By James Champlin Fernald
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Dissolve the sulphate in a pint of water, and having added the sulphuric acid, boil the solution. Pour into it the nitric acid, in small portions, boiling the liquid for a minute or two after each addition, until it no longer produces a dark colour; then allow the liquid to cool. Dissolve the ferrocyanuret of potassium in the remainder of the water, and add this solution gradually to the first liquid, agitating the mixture after each addition: then pour it upon a filter. Wash the precipitate with boiling water until the washings pass tasteless. Lastly, dry and rub into powder. This salt is chiefly used in the preparation of the hydrocyanic acid and the cyanuret of mercury. It has been advised in the treatment of intermittents, and in epilepsy and scrophulosis. Externally, it has been applied to ill-conditioned ulcers. Dose, four to six grains.
By Robley Dunglison
Word of the day
Dopamine Acetyltransferase
- An enzyme that catalyzes the of groups from acetyl-CoA to arylamines. They have wide specificity for aromatic amines, particularly serotonin, and can also catalyze acetyl transfer between arylamines without CoA. EC 2.3.1.5.