disulfonic acid

disulfonic acid

[‚dī·səl′fän·ik ′as·əd]
(chemistry)
A molecule that has two sulfonic acid groups.
References in periodicals archive ?
C3###A3###3- Amino acetophenone###B3###1- Amino-8-naphthol-3-, 6- disulfonic acid (H-acid)
C4###A4###3- Amino sulfonic acid###B4###1- Amino -8- naphthol-3, 6- disulfonic acid - (H-acid)
C5###A5###4- Amino sulfonic acid###B5###1- Amino-8-naphthol-3,6- disulfonic acid (H-acid)
C7###A7###3-Amino sulfonic acid###B7###1-Aminoacetye-8-naphthol-3,6- disulfonic acid (N-Acetyl H-acid)
C8###A8###4-Aminoacetophenone###B8###1-Aminoacetye-8-naphthol-3,6- disulfonic acid (N-Acetyl H-acid)
The supernatant collected was assayed for ferrocyanide content using 4, 7-diphenyl-1, 10-phenanthroline disulfonic acid disodium salt, absorption was recorded at 535 nm ([member of] = 20,500 [M.sup.-1] [cm.sup.-1]).
savings arising out of in-house Diamino Stilbene Disulfonic Acid (DASDA) manufacturing unit and the likely benefits from the proposed captive power plant.
The iron in 3 mL of each working solution was reduced with 50 [micro]L of thioglycolic acid (Sigma Aldrich) and 2.5 mL of an acetic acid-acetate buffer (Merck Eurolab) at pH 4.5, which is optimal for the reduction of ferric to ferrous iron and for absorbance measurements of iron complexed with bathophenanthroline sulfonate (4,7-diphenyl-1,10-phenanthroline disulfonic acid), disodium salt or ferene 13-(2-pyridyl)-5,6-bis(2[5-furyl sulfonic acid])-1,2,4-triazine} (11).
By adding an optical brightener called stilbene disulfonic acid to Gypchek, they have reduced the dose needed by 40 percent, Webb says.