Congo red excellent quality manufacturer, exporter and supplier. Congo red is an organic compound, the sodium salt of 3,3′-([1,1′-biphenyl]-4,4′-diyl)bis(4-aminonaphthalene-1-sulfonic acid. It is an azo dye. Congo red is water-soluble, yielding a red colloidal solution; its solubility is greater in organic solvents. However, the use of Congo red has long been abandoned, primarily because of its carcinogenic properties.
Congo red was formerly used to dye cotton but has been superseded by dyes more resistant to light and to washing. It is still used in histology to stain tissues for microscopic examination, and to serve as an acid-base indicator, since it turns red in the presence of alkalies and blue when exposed to acids.
Congo Red is an inverse ph indicator.
Congo Red is an acid-base indicator and it turns red when it comes in contact with bases or alkalies and turns blue in presence of acids.Congo red is water-soluble compound and its solubility is greater in organic solvents. Congo Red is a heterocyclic aromatic chemical compound with molecular formula, C32H22N6Na2O6S2
| C.A.S. No. | 573-58-0 |
| CI NO. | 22120 |
| M.F. | C32H22N6Na2O6S2 |
| M.W. | 696.66gm/mole |
Specifications:
|
Mol. weight: 696.665 g/mol
Odor: Odorless.
Color: Red. Brownish-red. (Dark.)
pH (1% soln/water): 8.5 - 9.0 [Basic.]
Melting Point: >360°C (680°F)
Solubility: Soluble in cold water. Very slightly soluble in acetone. Insoluble in diethyl ether. Soluble in Ethanol. Solubility in water: 1g/30 ml water
We introduce ourselves as one of the leading exporters of , pH Indicators, Chemicals reagents & Catalysts.
We give you brief details of our products as under -
| Product Name | CAS No | Product Name | Cas No | ||
| ACID FUCHSIN | 3244-88-0 | JANUS GREEN B | 2869-83-2 | ||
| ALIZARIN RED S | 130-22-3 | LEISHMAN'S STAIN | 12627-53-1 | ||
| ALIZARIN COMPLEXONE |
MALACHITE GREEN |
13425-25-7 | |||
| ALKALI BLUE 6B | 1324-80-7 | METHYL ORANGE | 547-58-0 | ||
| METHYL BLUE ACID BLUE 93 | 28983-56-4 | META CRESOL PURPLE | |||
| AURIN (Rosolic Acid) | 603-45-2 | MAGNESON I | -- -- | ||
| AZURE 1 (B) | 531-55-5 | May & Grunwald Stain | 62851-42-7 | ||
| AZURE A | 531-53-3 | METHYLENE BLUE | 7220-79-3 | ||
| AZUR II | 37247-10-2 | METHYL RED | 493-52-7 | ||
| BIEBRICH SCARLET | 4196-99-0 | METHYL GREEN | 7114-03-6 | ||
| BASIC FUCHSIN | 632-99-5 | NEW FUCHSIN | 3248-91-7 | ||
| BROMOPHENOL BLUE | 115-39-9 | NILE BLUE (SULFATE) | 3625-57-8 | ||
| BROMOCRESOL GREEN | 76-60-8 | NITROSO R-SALT | 525-05-3 | ||
| BROMOCRESOL PURPLE | 115-40-2 | NEUTRAL RED | 553-24-2 | ||
| BROMOCRESOL PURPLE SODIUM SALT | 62625-28-9 | ORANGE G | 1936-15-8 | ||
| BROMOTHYMOL BLUE | 76-59-5 | O-CRESOLPHTHALEIN | 59-27-0 | ||
| BROMOTHYMOL BLUE SODIUM SALT | 34722-95-93 | PHENOL RED | 143-74-8 | ||
| CRESOL RED | 1733-12-6 | PHENOL RED SODIUM SALT | 34487-61-1 | ||
| CHLOROPHENOL RED | 4430-20-0 | PHLOXINE B | 18472-87-2 | ||
| CHROME AZUROL S | 1667-99-8 | PAN INDICATOR | 85-85-8 | ||
| CRYSTAL VIOLET | 548-62-9 | PAR (Mono Sodium) | 16593-81-0 | ||
| O-CRESOLPHTHALEIN | 59-27-0 | PONCEAU S | 6226-79-5 | ||
| CALCON | 2538-85-4 | P-ROSANILINE HCL | 569-61-9 | ||
| CALCON CARBOXYLIC ACID | 3737-95-9 | PHENOLPHTHALEIN | |||
| CALMAGITE | 3147-14-6 | ROSE BENGAL | 632-69-9 | ||
| CONGO RED | 573-58-0 | SAFRANIN | 477-73-6 | ||
| CHROMOTROPE 2 R | 4197-07-3 | SUDAN III | 85-86-9 | ||
|
DI ETHYL SAFRANINE |
4569-86-2 | THYMOLPHTHALEIN | 125-20-2 | ||
|
DI METHYL SAFRANINE |
2390-56-9 | THIOFLAVIN T | 2390-54-7 | ||
|
2,6 DICHLOROINDOPHENOL SODIUMSALT |
620-45-1 | THYMOL BLUE | 76-61-9 | ||
| EOSIN YELLOW | 17372-87-1 | TITAN YELLOW | 1829- 00-1 | ||
| ERIOCHROME BLACK T | 1787-61-7 | TOLUIDINE BLUE | 92-31-9 | ||
| Ethyl Orange Sodium Salt | 62758-12-7 | TRYPAN BLUE | 72-57-1 | ||
| EVAN'S BLUE | 314-13-6 | WRIGHT'S STAIN | 68988-92-1 | ||
| FIELD STAIN A | XYLENOL ORANGE | 3618-43-7 | |||
| FIELD STAIN B | ACRIFLAVINE HCL | 8063-24-9 | |||
| FLUORESCEIN | 2321-07-5 | ACID BLUE 93 | 28983-56-4 | ||
| FLUORESCEIN SODIUM | 518-47-8 | P-ROSANILINE BASE | 467-62-9 | ||
| FLUORESCEIN COMPLEXONE | 1461-15-0 | P-ROSANILINE ACETATE | 6035-94-5 | ||
| GIEMSA'S STAIN | 51811-82-6 | ZINCON | 62625-22-3 | ||
| HYDROXY NAPHTHOL BLUE | 63451-35-4 | 1- NAPHTHOLBENZEIN | 145-50-6 | ||
| HEMATOXYLIN STAIN | 517-28-2 | ESOIN B | 548-24-3 |
NEW INDICATORS
| ALIZARIN YELLOW GG | 584-42-9 | NITRAZINE YELLOW | 1716-22-9 | ||
| ALCIAN BLUE 8GX | -- | NAPHTHOL GREEN B | 19381-50-1 | ||
| O-Cresolphthalein Complexone | 2411-89-4 | ORCEIN | 1400-62-0 | ||
| LITMUS GRANULES | 1393-92-6 | PYROCATECHOL VIOLET | 115-41-3 | ||
| BROMOXYLENOL BLUE | 40070-59-5 | PYROGALLOL RED | 32638-88-3 | ||
| BROMOPHENOL RED | 2800-80-8 | TETRAZOLIUM BLUE CHLORIDE | 1871-22-3 | ||
| BRILLIANT CRESYL BLUE | 81029-05-2 | SUDAN IV | 85-83-6 |
CONGO RED manufacturer supplier distributor in Mumbai, Kandla, Kolkata, Vizag, Chennai, India, Fujairah, Dubai, Sharjah, UAE, Gulf, Middle East, Muscat Oman, Kenya Africa. Get the best quality of CONGO RED at a competitive price from us. We have ready stock of CONGO RED in India, UAE Gulf, Oman, Kenya Africa. Contact us for bulk as well as small orders.
