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Direct Yellow 4

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Direct Yellow 4 / CAS : 3051-11-4

Appearance Yellow orange powder, odorless UN 0.0
HS 32041400 DG Class 0.0
Synonyms Brilliant Yellow; Brillantyellow; Fenamin Yellow 3G; C.I. Direct Yellow 4, Disodium Salt; Sodium 4,4'-Bis(P-Hydroxyphenylazo)-2,2'-Vinylenedibenzenesulphonate; Direct Yellow; Direct Yellow Rch; Bright Yellow; C.I.Direct Yellow 4; 83 Direct Yellow 83; 26 Direct Yellow 26; Brilliantgelb; 27 Direct Yellow 27; 44 Direct Yellow 44; 50 Direct Yellow 50; Brilliant Yellow Sodium
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Properties

Summary

Formula
C26H18N4Na2O8S2
Molecular Mass
624.55300
Exact Mass
624.03600
PSA
221.06000
Logp
8.06880
IUPAC
disodium;5-[(4-hydroxyphenyl)diazenyl]-2-[(E)-2-[4-[(4-hydroxyphenyl)diazenyl]-2-sulfonatophenyl]ethenyl]benzenesulfonate
SMILES
C1=CC(=CC=C1N=NC2=CC(=C(C=C2)/C=C/C3=C(C=C(C=C3)N=NC4=CC=C(C=C4)O)S(=O)(=O)O)S(=O)(=O)O)O.[Na+]

Attribute classification

Matter Classification
organic
Category
Dyestuffs and Pigments > Direct Dyes

Chemical and Physical Properties

Melting Point
>250°C
Density
1.5 g/cm3
Appearance
Yellow orange powder, odorless

Export information

HS Code
32041400
Export Rebate
0%
UN No.
0.0
DG-Class
0.0

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