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Congo Red

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Congo Red / CAS : 573-58-0

Appearance Brown red powder UN -
HS 32041400 DG Class -
Synonyms Disodium 4-Amino-3-[4-[4-(1-Amino-4-Sulfonato-Naphthalen-2-Yl)Diazenylphenyl]Phenyl]Diazenyl-Naphthalene-1-Sulfonate; Direct Red 28; Solucongo; Disodium,4-Amino-3-[[4-[4-[(1-Amino-4-Sulfonatonaphthalen-2-Yl)Diazenyl]Phenyl]Phenyl]Diazenyl]Naphthalene-1-Sulfonate; Haemonorm; Haemomedical; Congazone Sodium; 1-Naphthalenesulfonic Acid, 3,3‘-[[1,1‘-Biphenyl]-4,4‘-Diylbis(Azo)]Bis[4-Amino-, Disodium Salt; Benzo Congo Red; Hemorrhagyl; Benzidinediazo-Bis-1-Naphtylamine-4 Sulfonic Acid Disodium; Sodium Salt Of Benzidinediazobis-1-Naphthylamine-4-Sulfonic Acid; C.I. Direct Red 28
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Properties

Summary

Formula
C32H22N6Na2O6S2
Molecular Mass
696.66300
Exact Mass
696.08400
PSA
232.64000
Logp
10.78740
IUPAC
disodium;4-amino-3-[[4-[4-[(1-amino-4-sulfonatonaphthalen-2-yl)diazenyl]phenyl]phenyl]diazenyl]naphthalene-1-sulfonate
SMILES
C1=CC=C2C(=C1)C(=CC(=C2N)N=NC3=CC=C(C=C3)C4=CC=C(C=C4)N=NC5=C(C6=CC=CC=C6C(=C5)S(=O)(=O)[O-])N)S(=O)(=O)[O-].[Na+].[Na+]

Attribute classification

Matter Classification
organic
Category
API & Intermediate > Pharmaceutical Raw Materials
Dyestuffs and Pigments > Dyestuff

Chemical and Physical Properties

Melting Point
>360 °C
Density
0.995 g/mL
Appearance
Brown red powder
Acidity and Basicity
neutral

Export information

HS Code
32041400
Export Rebate
0%
Risk Code
R45-63-36
Safety Label
T,Xi

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