PALABRAS DEL INGLÉS RELACIONADAS CON «LEUCO BASE»
leuco base
leuco
base
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reducing
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regenerate
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reduction
triphenylmethane
carbinol
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colourless
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ˈluːkəʊ
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leucoma
leuc
leucocyte
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10 LIBROS DEL INGLÉS RELACIONADOS CON «LEUCO BASE»
Descubre el uso de
leuco base en la siguiente selección bibliográfica. Libros relacionados con
leuco base y pequeños extractos de los mismos para contextualizar su uso en la literatura.
1
Combined Compendium of Food Additive Specifications: ...
Calculations Calculate the percent leuco base in the sample using the following
equation: % leuco base = 100 x [(A4 - A3) - (A2 - A,)] x 1 liter x F/(a x b x W x R)
where A1....A4 are the recorded absorbances of curves 1, 2, 3, and 4,
respectively; ...
Malachite green is prepared by condensing dimethyl aniline (2 molecules) with
benzaldehyde (1 molecule) at 100°C. The leuco base produced is oxidised with
lead dioxide to produce malachite green. It dyes wool and silk directly. Crystal ...
A leuco base is a specific type of leuco compound and is made coloured or
colourless through oxidation and reduction, respectively. Schiffs reagent is often
wrongly referred to as a leuco base, but it is not because oxidation and reduction
are ...
Guy Orchard, Brian Nation, 2011
4
Aliphatic Compounds: Sulphur, Phosphorus Silicon & Boron
The salts are easily reconverted into the leuco-base. oxidation acid leuco-base <
i± colour -base < > dye (colourless) reduction (colourless) alkali (coloured)
Malachite Green is prepared by condensing dimethylaniline (2 molecules) with ...
5
Ancient Wine: The Search for the Origins of Viniculture
This family of dyes is characterized by their ability to be reduced to a soluble dye
(the leuco base, which is yel- lowish) and then reprecipitated to the solid on
exposure to air (oxy- gen). This chemical behavior of the indigoid dyes enables
them ...
Patrick E. McGovern, 2013
6
Ionic Equilibria in Analytical Chemistry
Sn2+ can also be characterized by its property to reduce methylene blue into
hydrochloric acid, giving the corresponding leuco base: Sn2+ + methylene blue +
H+ —> Sn4+ + methylene blue (leuco base). The methylene blue/leuco base ...
7
Functional Polymer Films
+2n e' '1' '1' '1' '1' Reduction '(I 'II N N N N N N + 2n A + ' + ' Oxidation A' A' n 2" (a)
—2n e' Emeraldine salt Leuco base +2n H' H H H H *2” e. H H 1 1 1 1 Reduction
I I ~o~o~o~ - 40% + o + o Oxidation (1| n —2n H' 2" -2n e' Emeraldine salt ...
Wolfgang Knoll, Rigoberto C. Advincula, 2013
8
Organic Chemistry For Competitive Examination
H2SO4 to give a leuco base (Gr. leuco = colourless). Oxidation of the leuco base
with lead oxide followed by treatment with HC1 yields the dye. Malachite green is
used as a direct dye for wool and silk. N(CH3)2 i _ N(CH3)2 Benzaldehyde W ...
9
T.B. Of Organic Chemistry (M.E.)
It is obtained by treating benzaldehyde ( 1 mole) with yV^V-dimethylaniline (two
moles) in the presence of concentrated sulphuric acid to give Leuco Base (Gr.
leuco = colourless). Oxidation of the leuco base with lead oxide followed by ...
10
The Chemistry of Heterocyclic Compounds, Condensed Thiophene ...
Among several obvious properties that a. successful commercial dye must
possess is the ability to form a soluble sodium salt of the leuco base easily and
quantitatively, and the leuco base must be quite easily reoxidized by air to the
original ...
