Documents
C6767
Congo Red
Dye content ≥35 %
Recommended Products
form
powder
composition
Dye content, ≥35%
technique(s)
titration: suitable
pH
6.7 (10 g/L)
mp
>360 °C (lit.)
solubility
H2O: 1 mg/mL
application(s)
diagnostic assay manufacturing
hematology
histology
storage temp.
room temp
SMILES string
[Na+].[Na+].Nc1c(cc(c2ccccc12)S([O-])(=O)=O)\N=N\c3ccc(cc3)-c4ccc(cc4)\N=N\c5cc(c6ccccc6c5N)S([O-])(=O)=O
InChI
1S/C32H24N6O6S2.2Na/c33-31-25-7-3-1-5-23(25)29(45(39,40)41)17-27(31)37-35-21-13-9-19(10-14-21)20-11-15-22(16-12-20)36-38-28-18-30(46(42,43)44)24-6-2-4-8-26(24)32(28)34;;/h1-18H,33-34H2,(H,39,40,41)(H,42,43,44);;/q;2*+1/p-2/b37-35+,38-36+;;
InChI key
IQFVPQOLBLOTPF-HKXUKFGYSA-L
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Related Categories
1 of 4
This Item | C6277 | N7005 | 75768 |
|---|---|---|---|
| composition Dye content, ≥35% | composition Dye content, ≥85% | composition Dye content, ≥90% | composition - |
| technique(s) titration: suitable | technique(s) - | technique(s) titration: suitable | technique(s) HPLC: suitable, gas chromatography (GC): suitable |
| pH 6.7 (10 g/L) | pH - | pH 6.8-8.0, red to yellow | pH - |
| mp >360 °C (lit.) | mp >360 °C (lit.) | mp 290 °C (dec.) (lit.) | mp >360 °C (lit.) |
| solubility H2O: 1 mg/mL | solubility H2O: 10 mg/mL | solubility water: 10 mg/mL, dark red | solubility - |
Application
- Congo red has been used as a histochemical stain for the quantification of amyloid deposits in brain tissues.
- It has been used as a cell wall inhibiting agent in fungus Cryptococcus neoformans.
- It has also been used to study microstructural details in the cell walls of raw potato and fried potato using confocal microscopy.
Biochem/physiol Actions
Signal Word
Danger
Hazard Statements
Precautionary Statements
Hazard Classifications
Carc. 1B - Repr. 2
Storage Class Code
6.1C - Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
WGK
WGK 3
Personal Protective Equipment
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