Congo Red
Product Specifications
CAS Number
573-58-0
Synonyms
Direct Red 28
Target
Dyes
Applications
Others
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+]
Molecular Formula
C32H22N6Na2O6S2
Additionnal Information
Congo Red (Direct Red 28) is an indicator dye that is blue-violet at pH 3.0 and red at pH 5.0. It is an acid dye used in testing for hydrochloric acid in gastric contents but has carcinogenic properties.
Storage Conditions
3 years -20°C powder
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