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Direct Blue 6
Direct Blue 6 / CAS : 2602-46-2
| Appearance | Dark blue powder, soluble in water, blue to navy blue solution, slightly soluble in ethanol and fibrinolysin, insoluble in other organic solvents. It is brilliant blue in case of concentrated sulfuric acid and purple to red blue after dilution. Adding concentrated hydrochloric acid to its aqueous solution to form navy blue precipitate; Add sodium hydroxide solution to form dark purple precipitation. When dyeing cellulose fiber, the dye absorption is good. When the temperature is 60-80 ℃, the affinity is the largest and the discharge is good. | UN | 0.0 |
| HS | 32041100 | DG Class | 0.0 |
| Synonyms | Direct Blue; C.I. Direct Blue 6, Tetrasodium Salt; Diaminreinblau; Modrprima15; Benzo Blue 2B; Essex Direct Blue 2 B Conc; Tetrasodium 5,5'-(1,1'-Biphenyl-4,4'-Diylbisazo)-Bis-7-Amino-6-Hydroxy-Naphthalene-1,4-Disulphonate; Direct Blue 6 (C.I. 22610); Nippon Blue B; Light Blue; Direct Sky Blue 5B; Paperblues; Directbluehh; Airedaleblued; Skyblue4B; Skyblue5B; Disulfonsaeure,Natriumsalz; Diazoverb.-Tetranatrium-Salz; 5,5'-Diamino-4,4'-Dihydroxy-3,3'-(3,3'-Dimethoxy-Biphenyl-4,4'-Diyl-Bis-Azo)-Bis-Naphthalene-2,7-Disulfonic Acid,Sodium Salt | ||
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Properties
Summary
Formula
C32H20N6Na4O14S4
Molecular Mass
932.75200
Exact Mass
931.95100
PSA
404.26000
Logp
10.16840
IUPAC
tetrasodium;5-amino-3-[[4-[4-[(8-amino-1-hydroxy-3,6-disulfonatonaphthalen-2-yl)diazenyl]phenyl]phenyl]diazenyl]-4-hydroxynaphthalene-2,7-disulfonate
SMILES
C1=CC(=CC=C1C2=CC=C(C=C2)N=NC3=C(C4=C(C=C(C=C4C=C3S(=O)(=O)[O-])S(=O)(=O)[O-])N)O)N=NC5=C(C6=C(C=C(C=C6C=C5S(=O)(=O)[O-])S(=O)(=O)[O-])N)O.[Na+].[Na+].[Na+].[Na+]
Attribute classification
Category
Dyestuffs and Pigments > Direct Dyes
Chemical and Physical Properties
Appearance
Dark blue powder, soluble in water, blue to navy blue solution, slightly soluble in ethanol and fibrinolysin, insoluble in other organic solvents. It is brilliant blue in case of concentrated sulfuric acid and purple to red blue after dilution. Adding concentrated hydrochloric acid to its aqueous solution to form navy blue precipitate; Add sodium hydroxide solution to form dark purple precipitation. When dyeing cellulose fiber, the dye absorption is good. When the temperature is 60-80 ℃, the affinity is the largest and the discharge is good.
Export information
HS Code
32041100
Export Rebate
0%
UN No.
0.0
DG-Class
0.0
Risk Code
R20/21/22
Safety Label
T
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