Chemically, acid dyes contain a chromophore as an acidic group
, usually -SO3H in the form of sodium salt that are soluble in water [2, 3].
As the name suggest, the alkaline group produces alkaline blood and the acidic group
produces acidic blood.
The desired structure was obtained after milling and heating." The use of superconductive cables and wires with high critical temperature, specially REBa2Cu3O7-x acidic group
significantly saves energy and the cost in comparison with usual wires.
(1) The distribution of acidic group
concentrations in the humic acid molecules is smooth.
They contain a chromophoric group and an acidic group
, usually - SO3H, in the form of sodium salt that impart water solubility .
Estimation of Acidic Groups
. Number of acidic sites present on RCP and ACP were estimated by methylene blue absorption method [20, 21].
In a paper published in the Journal of the American Chemical Society, Fontaine showed that a molecule with mildly Lewis acidic groups
on one end and mildly Lewis basic groups on the other attracted C[O.sub.2] well enough to bend the molecule, but not so much that it couldn't be released.
After filtration of copper solution through the membranes containing 1 or 3 wt.% of PVP, the acidic groups
of pKa = 5-7 disappear.
may include carboxylic acid, sulfonic acid, sulfonimide, phosphoric acid, or phosphonic acid groups.
Synthro-Pon S 602 is also a new wetting and dispersing additive for solventborne coatings based on a copolymer with acidic groups
designed to disperse and stabilize inorganic pigments.