2]-N) was measured at 543 nm in a spectrophotometer (Shimadzu, Model UV-1601, Kyoto, Japan) using [alpha]-naphthylamine and sulphanilic
acid (Wetzel & Likens, 1991).
This is a method by which bilirubin reacts with diazotised sulphanilic
acid to produce azobilirubin (Violet colour).
Separation was performed with acetonitrile/ methanol/water (1:1:1) as a solvent system and visualized by short wave length (245 nm) and diazotized sulphanilic
For example, tartrazine and carmoisine are nitrous derivatives of azo compounds that can be metabolised to highly sensitizing aromatic amines such as sulphanilic
acid (Maekawa et al.
This work aimed to synthesize a new sulphanilic
acid-dithiooxamide-formaldehyde (SDTOF) terpolymer resin.
In this method, an aqueous extract of the tobacco was prepared and the total alkaloids (as nicotine) content of the extract was determined by reaction with sulphanilic
acid and cyanogen chloride.
Most clinically used methods for the determination of bilirubin and its conjugates (in the form of esters of mono- and diglucuronide of bilirubin and albumin covalently bound) are based on its reaction to diazotised sulphanilic
Phenols were detected by spraying the TLC plates with diazotized sulphanilic
acid (Sigma-Aldrich) in 10% Sodium carbonate (w/v), followed by 50% sulphuric acid (v/v).
The RLG group currently has a diversified product portfolio that includes acetanilide, acetic anhydride, acetic acid, industrial alcohol, aniline oil and sulphanilic
N-(1-naphthyl) ethylene Diamine Dihydrochloride (NEDD), Sodium nitoprusside, sulphanilic
acid, sodium chloride (NaCl), Ferric Chloride (FeCl3), disodium hydrogen orthophosphate, potassium dihydrogen phosphate, 2,2'-Azino- bis(3ethylbenzothiazoline-6-sulfonic acid) (ABTS), butylated hydroxyanisole (BHA), butylated hydroxytoluene (BHT), 1,10-Phenanthroline and Folin-Ciocalteu Reagent.
The nitrates/nitrites concentration was analyzed using the phenol-disulphonic acid method, respectively the sulphanilic
acid and [alpha]-naphtylamine hydrochlorate method.
The European Union has raised its anti-dumping on imports from China of sulphanilic
acid from a maximum of 21% to 33.