Acid Red 73

CAS Number: 5413-75-2
Molecular Formula: C22H14N4Na2O7S2
Purity: Acid Red 73 97% purity

About Acid Red 73

Acid Red 73 CAS 5413-75-2 is a critical sulfonated bisazo dye increasingly utilised as a high purity fine chemical for the analytical testing of food and cosmetic components, where 98% purity (textile and food standards industry) ensures precise colorimetric standardization. Woodstain Scarlet serves as a vital marker i...

Acid Red 73 Specifications

CAS Number

5413-75-2

Molecular Formula

C22H14N4Na2O7S2

Molecular Weight

556.48 g/mol

IUPAC Name

disodium 7-hydroxy-8-[(E)-{4-[(E)-phenyldiazenyl]phenyl}diazenyl]naphthalene-1,3-disulfonate

Canonical SMILES

C1=CC=C(C=C1)N=NC2=CC=C(C=C2)N=NC3=C(C=CC4=C3C(=CC(=C4)S(=O)(=O)[O-])S(=O)(=O)[O-])O.[Na+].[Na+]

InChI Key

PEAGNRWWSMMRPZ-RVTJCSDESA-L

CAS Number

5413-75-2

Molecular Formula

C22H14N4Na2O7S2

Molecular Weight

556.48 g/mol

IUPAC Name

disodium 7-hydroxy-8-[(E)-{4-[(E)-phenyldiazenyl]phenyl}diazenyl]naphthalene-1,3-disulfonate

Canonical SMILES

C1=CC=C(C=C1)N=NC2=CC=C(C=C2)N=NC3=C(C=CC4=C3C(=CC(=C4)S(=O)(=O)[O-])S(=O)(=O)[O-])O.[Na+].[Na+]

InChI Key

PEAGNRWWSMMRPZ-RVTJCSDESA-L

Molecular Weight

556.48 g/mol

Purity

Acid Red 73 97% purity

Physical appearance

Yellow light red powder

Textile Dye

A synthetic azo dye primarily used for the coloration of protein-based fibers such as wool and silk, as well as cotton and nylon, providing high-intensity red shades with good color fastness

Histological Counterstain

A versatile anionic dye employed in laboratory research as a counterstain for cytoplasm, muscle, and connective tissue in tissue sections to contrast with blue hematoxylin-stained nuclei