Experiments for 'pyrogallol'
Below follows a summary of all experiments, matching your search. Click one of the EXPERIMENT hyperlinks for a complete description of the experiment.
Results for 'pyrogallol':
EXPERIMENT 1
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Phenol and its derivatives form highly colored coordination complexes
with ferrous and ferric ions.
EXPERIMENT 2
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A large set of compounds is checked on interaction with concentrated
nitric acid. Many reductors react violently with nitric acid.
EXPERIMENT 3
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Diverse phenol-derivatives, can be oxidized easily by bromine, yielding
intensely colored oxidation products.
EXPERIMENT 4
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Photography developers, based on phenol-like structures, are easily oxidized
by air in alkaline environments and the oxidation products are such, that
a reverse process does not occur anymore (probably the oxidation products
are large polymerized species).
EXPERIMENT 5
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Pyrogallol does not dissolve in trichloroethene very well, but some of it
does dissolve.
EXPERIMENT 6
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Pyrogallol is quickly oxidized in alkaline environments by oxygen from the
air. The more alkaline, the faster this reaction proceeds.
The black oxidation products are affected by acid, but the pyrogallol is
not recovered by the acid.
EXPERIMENT 7
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Pyrogallol is oxidized by oxygen from air, even in neutral solution. This
reaction, however, proceeds slowly.
EXPERIMENT 8
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It appears that copper (II) ions catalyse the oxidation of pyrogallol by
hydrogen peroxide.
EXPERIMENT 9
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Copper (II) apparently catalyses the oxidation of pyrogallol by oxygen from
the air.
EXPERIMENT 10
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Pyrogallol gives rise to many colored products on oxidation and coordination.
More investigation is needed in order to get more insight in all these
colors and the conditions under which they are formed.
EXPERIMENT 11
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The coordination complexes formed by iron-salts and phenol-like photographic
developers show very typical reactions with hydrogen peroxide. Many times
these reactions result in oxidation products which are not dark colored,
as opposed for oxidation by atmospheric oxygen.
EXPERIMENT 12
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Pyrogallol reacts with chlorine, forming an orange/red compound. When excess
chlorine is used, this compound is further oxidized to an almost colorless
compound.
End of results for 'pyrogallol'