PAROLE IN INGLESE ASSOCIATE CON «PYROCATECHIN»
pyrocatechin
catechol
also
known
pyrocatechol
dihydroxybenzene
organic
compound
with
molecular
formula
ortho
isomer
three
isomeric
benzenediols
this
colorless
occurs
naturally
trace
amounts
first
discovered
pyrocatechin
chem
crystalline
substance
phenol
series
found
various
plants
called
because
obtained
merriam
webster
international
scientific
vocabulary
word
doesn
usually
appear
from
premium
unabridged
photographers
formulary
gives
warm
black
images
rapid
development
high
contrast
acts
tanning
developer
which
stains
actually
fogs
negative
pubchem
10 LIBRI IN INGLESE ASSOCIATI CON «PYROCATECHIN»
Scopri l'uso di
pyrocatechin nella seguente selezione bibliografica. Libri associati con
pyrocatechin e piccoli estratti per contestualizzare il loro uso nella letteratura.
1
Natural Growth Inhibitors and Phytohormones in Plants and ...
On the other hand, the ortho-form of pyrocatechin is several times more active
than the para- and meta-forms: hydroquinone and resorcin. Taking into account
the fact that, as has been found earlier, the tissues of cereal coleoptiles can
oxidize ...
V. Kefeli, M.V. Kalevitch, Bruno Borsari, 2003
_ _ Pyrocatechin, C“H'(OH)2, can be obtained by the destructive distlllation of
many other substances, as catechu, kino, the extracts of thatany and bearberry
leaves, and other extracts rich in that form of tannin which produces greenish (not
...
Friedrich August Flückiger, Daniel Hanbury, 2014
The reaction is illustrated by the equation: 06H5OH + = CngIgOH + Phenole
Iodine Triiodine phenole Hydroiodic Acid Pyrocatechin and Hydroquinone.—-
Urine containing either of these bodies turns dark on standing. Both bodies are ...
Ether when shaken with the concentrated aqueous solution and left to evaporate,
leaves colourless crystals of pyrocatechin which after purification are devoid of
acid reaction. They have a peculiar b ' persistent taste, and are very pungent and
...
F.A. Fl?ckiger, Daniel Hanbury
PYRO (see Pyrogallol) PYROCATECHIN Formulas : 1,2Dihydroxybenzene;
orthoDihydroxybenzene. Synonyms:Catechol,pyrocatechol, catechin, pyrocat.
Appearance:Colorless crystallineneedlesorscales. Uses :Developing agent ...
6
Henley's Twentieth Century Formulas, Recipes and Processes: ...
2 parts Solution C . . . . . . . . . 1 part The reading of the hydrometer for stock
solutions is the same whether dried chemicals or crystals are used. No water is
used. Pyrocatechin-Phosphate Developer.— Solution A Crystallized sulphite of
soda .
Gardner Dexter Hiscox, 1930
7
ADVANCES IN QUANTUM CHEMISTRY VOL 24 Z
Pyrocatechin Without a Cog-Wheel Effect 7.3. Non-planar Pyrocatechin Without
the Cog-wheel Effect 7.3.1. Non planar pyrocatechin without the cog-wheel effect
between the rotors and the wagging atoms. 7.3.2. Non planar pyrocatechin ...
8
Photographic Possibilities: The Expressive Use of Equipment, ...
Pyrocatechin (catechol), introduced in 1880, can be utilized with contemporary
films to create a staining and tanning effect similar to that produced by pyro. It
works well with fast, thick-emulsion films, especially when deal- ing with high-
contrast ...
9
Lectures on the Physiology of Plants
He obtained formic and ethylidene-lactic acids, an aromatic substance termed
pyrocatechin, and carbon dioxide was evolved. It appears to be probable that
oxalic acid is formed in the process, and that it is decomposed into formic acid
and ...
10
A Textbook of Physiological Chemistry
Pyrocatechin-sulphuric Acid. This acid was first found in horse's urine in rather
large quantities by Baumann. It occurs in human urine only in the very smallest
amounts, and perhaps not constantly, but it is present Abundantly in the urine
after ...
Olof Hammarsten, John Alfred Mandel, 1906
