C.I. Direct Red 21

Modify Date: 2025-09-11 18:14:28

C.I. Direct Red 21 Structure
C.I. Direct Red 21 structure
Common Name C.I. Direct Red 21
CAS Number 6406-01-5 Molecular Weight 703.74200
Density 1.5g/cm3 Boiling Point N/A
Molecular Formula C34H28N6NaO6S2+ Melting Point N/A
MSDS N/A Flash Point N/A

 Names

Name sodium,6-amino-5-[[4-[4-[(2-amino-6-sulfonaphthalen-1-yl)diazenyl]-3-methylphenyl]-2-methylphenyl]diazenyl]naphthalene-2-sulfonic acid
Synonym More Synonyms

 Chemical & Physical Properties

Density 1.5g/cm3
Molecular Formula C34H28N6NaO6S2+
Molecular Weight 703.74200
Exact Mass 703.14100
PSA 226.98000
LogP 12.08940
Index of Refraction 1.729

 Synonyms

Hispamin Red B
C.I. Direct Red 21
C.I. Direct Red 21,disodium salt
Benzopurpurine B
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