Congo red

C₃₂H₂₂N₆Na₂O₆S₂CAS 573-58-0696.66 g/mol

Open in Covalent MOL file

Properties

No GHS classification is on file for this compound. That is not evidence that it is harmless.

CAS number

573-58-0

SMILES

Nc1c(N=Nc2ccc(-c3ccc(N=Nc4cc(S([O-])(=O)=O)c5ccccc5c4N)cc3)cc2)cc(S([O-])(=O)=O)c2ccccc12.[Na+].[Na+]

InChI

The InChI we hold for this record describes the parent acid and the metal separately rather than the salt above, so it is not shown here.

Type any one amount. The others follow from the molar mass.

51 names · show all

1-Naphthalenesulfonic acid, 3,3′-[[1,1′-biphenyl]-4,4′-diylbis(2,1-diazenediyl)]bis[4-amino-, sodium salt (1:2)
C.I. Direct Red 28, disodium salt
1-Naphthalenesulfonic acid, 3,3′-[[1,1′-biphenyl]-4,4′-diylbis(azo)]bis[4-amino-, disodium salt
C.I. 22120
Atlantic congo red
Atul congo red
Azocard red congo
Benzo congo red
Brasilamina congo 4B
Congo red L
Congo red N
Congo red 4B
Congo red CR
Congo red H
Congo red R
Congo red RS
Congo red M
Congo red W
Congo red 4BX
Cotton red L
Cotton red 4BC
Diacotton congo red
Direct red C
Direct red K
Direct red 28
Direct red DC-CF
Erie congo 4B
Cotton red 5B
Hispamin congo 4B
Kayaku congo red
Mitsui congo red
Peeramine congo red
Sugai congo red
Tertrodirect red C
Trisulfon congo red
Vondacel red CL
C.I. Direct red 28
Congo Red sodium salt
Congo red WS
Haemomedical
Haemonorm
Hemorrhagyl
Solucongo
Red K (dye)
Congo red K
Direct congo red
Congo red TS
Direct red R
Congo red disodium salt
Direct scarlet 4B
Congo red 4BS

Tanimoto similarity of circular fingerprints over the whole catalogue.