Ainda não temos significados para "brown coloration".
1The last had a very indistinct finishing point, the brown coloration being very evanescent.
2The copper appears as a brown coloration or black precipitate according to the quantity present.
3Acids again destroy the brown coloration produced by alkalies.
4This is based upon the brown coloration produced in very dilute solutions of lead by the action of a solution of sulphuretted hydrogen.
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