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Direct Black 38

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Direct Black 38 / CAS : 1937-37-7

Appearance Brown black powder UN 0.0
HS 32041400 DG Class 0.0
Synonyms C.I. Direct Black 38; Direct Black EX; Chlorazol Black E; Meta Black; Carbide Black E; Direct Black FR; Formic Black C; Formic Black CW; Formic Black EA; Direct Black GW; Direct Black GX; Direct Black N; Direct Black RX; Direct Black SD; Direct Black WS
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Properties

Summary

Formula
C34H25N9Na2O7S2
Molecular Mass
781.72800
Exact Mass
781.11100
PSA
303.61000
Logp
11.91860
IUPAC
disodium;4-amino-3-[[4-[4-[(2,4-diaminophenyl)diazenyl]phenyl]phenyl]diazenyl]-5-hydroxy-6-phenyldiazenylnaphthalene-2,7-disulfonate
SMILES
C1=CC=C(C=C1)N=NC2=C(C3=C(C(=C(C=C3C=C2S(=O)(=O)[O-])S(=O)(=O)[O-])N=NC4=CC=C(C=C4)C5=CC=C(C=C5)N=NC6=C(C=C(C=C6)N)N)N)O.[Na+].[Na+]

Attribute classification

Matter Classification
organic
Category
Dyestuffs and Pigments > Direct Dyes

Chemical and Physical Properties

Melting Point
109-110°C
Density
1.61g/cm3
Appearance
Brown black powder

Export information

HS Code
32041400
Export Rebate
0%
UN No.
0.0
DG-Class
0.0
Risk Code
45-63-36
Safety Label
T

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