Congo red


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Congo red

n.
A brownish-red powder, C32H22N6Na2O6S2, used in medicine and as a dye, indicator, and biological stain.

Congo red

n
(Elements & Compounds) a brownish-red soluble powder, used as a dye, a diagnostic indicator, a biological stain, and a chemical indicator. Formula: C32H22N6O6S2Na2

Con′go red′


n.
a water-soluble powder, C32H22O6N6S2Na2, used chiefly as a dye, biological stain, and chemical indicator.
[1880–85]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.congo red - a red-brown azo dye especially as a chemical pH indicator (congo red is red in basic and blue in acidic solutions)
solution - a homogeneous mixture of two or more substances; frequently (but not necessarily) a liquid solution; "he used a solution of peroxide and water"
acid-base indicator - an indicator that changes color on going from acidic to basic solutions
azo dye - any dye containing one or more azo groups
References in periodicals archive ?
It can be safely concluded from this study that Lady Finger stem can remove Congo Red and Sunset Yellow from water efficiently.
2-4) Microcrystalline cellulose is brightly birefringent when viewed with polarized light, and its identification is facilitated by a characteristic histochemical staining profile with Gomori methenaminesilver (GMS), periodic acid-Schiff, and Congo red stains.
Congo red staining will highlight the amyloid with a light-green birefringence with polarization.
Congo red agar method (CRA), Tissue culture plate method (TCP), and Tube method (TM) were done with Candida species from indwelling catheters to evaluate the reliability of biofilm formation.
Some agricultural wastes that have been converted to activated carbon for use in dye adsorption are olive kernels [13], Euphorbia rigida [14], bamboo shoot [15] and jute fiber [16] for methylene blue removal, coconut flower for reactive red adsorption [17], bamboo dust, coconut shell, groundnut shell, rice husk and straw for removal of Congo red and silk cotton hull for reactive blue removal [18].
After appropriate informed consent was obtained, biopsy of her left ear canal was performed, which identified dermal amyloidosis, which was confirmed with Congo red stain with apple-green birefringence on polarization (figure 2).
Renal diseases with organized deposits are divided by some into 2 categories: Congo red-positive diseases, encompassing all of the amyloidoses, and those that are Congo red negative, which include all of the other disorders mentioned.
This study proved selective adsorption of cationic methylene blue (MB) and anionic Congo red (CR) in PA / CFO nanocomposites [13].
Congo red histochemical staining revealed significant amorphous deposits in the interstitium and small vessels.
Biofilm formation can be detected by Tissue Culture Plate Method (TCP), Tube Method (TM) and Congo Red Agar (CRA) Method.
In 1924 Divery found that SPs consisted of amyloid using Congo red staining.
Isolates were tested on different dyes like Congo red and Bromothymol blue (BTB) in the YMA and stained for its gram reaction.