Acid Red 73

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
IUPAC NameORBotanical 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

Cosmetic Colorant

A specialized red dye used in the formulation of personal care products, including lipsticks, hair dyes, and soaps, to impart vivid red pigmentation

Industrial Colorant

A functional additive used in the paper, leather, and plastics industries for surface staining and bulk coloration to achieve brilliant red finishes.

Acid Red 73 FAQs

Minimum Order Quantity

25 kg (pilot) · 1 MT (commercial)

Lead Time

3 – 5 weeks ex-works

Incoterms

FOB · CIF

Packaging

20 L pails, 200 L HDPE drums, 1000 L IBC

Regional Availability

India · EU · Middle East · Southeast Asia

Documentation

SDS · COA · TDS available on request

Compliance & Quality

REACH registered*

GHS/SDS available

ISO 9001:2015 site*

RoHS compliant*

Global sourcing network

Consistent quality & reliability

End-to-end technical support

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