Direct Black 27
- Molecular Weight: 0
What is Direct Black 27?
Preparation
4-(4-Aminophenyl)benzenamine double nitriding, first and 4,5-Dihydroxynaphthalene-2,7-disulfonic acid coupling, and then in alkaline conditions and 6-Amino-4-hydroxynaphthalene-2-sulfonic acid?coupling, product to diazo, and Benzene-1,3-diamine coupling.
Properties and Applications
blue and black. Moderate soluble in water for hidden cyan, not soluble in alcohol. The strong sulfuric acid for Tracy in blue, diluted for dark purple. The dye solution to join strong hydrochloric acid have precipitation of dark; Add thick sodium hydroxide solution for purple.
Standard | Acid Resistance | Alkali Resistance | Light Fastness | Soaping | Water | ||
Fading | Stain | Fading | Stain | ||||
ISO | 4 | 3 | 4 | 1-2 | 2-3 |
Safety information for Direct Black 27
New Products
SODIUM AAS SOLUTION ZINC AAS SOLUTION BUFFER SOLUTION PH 10.0(BORATE) GOOCH CRUCIBLE SINTERED AQUANIL 5 BERYLLIUM AAS SOLUTION Azithromycin Imp D Azithromycin EP Impurity C Atracurium Besylate EP Impurity D Azithromycin EP Impurity B Azithromycin EP Impurity O Cetirizine Glycerol Ester Impurity HydrochlorideRelated products of tetrahydrofuran
Direct Black 24
4-Amino-3,6-bis[[4-[(2,4-diamino-5-methylphenyl)azo]phenyl]azo]-5-hydroxynaphthalene-2,7-disulfonic acid disodium salt
4-Amino-6-[(4-aminophenyl)azo]-3-[[4'-[[5-[(4-aminophenyl)azo]-2,4-diaminophenyl]azo][1,1'-biphenyl]-4-yl]azo]-5-hydroxynaphthalene-2,7-disulfonic acid disodium salt
6-Amino-4-hydroxy-3-[[4-(phenylazo)-1-naphtyl]azo]-2-naphthalenesulfonic acid sodium salt
2,7-Naphthalenedisulfonic acid, 5-amino-4-hydroxy-3-[[4'-[[4-hydroxy-2-(phenylamino)phenyl]azo]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]azo]-, disodium salt
3,3'-[1,1'-Biphenyl-4,4'-diylbis(azo)]bis(6-amino-4-hydroxynaphthalene-2-sulfonic acid sodium) salt
Direct Black 22:1
2-Naphthalenesulfonic acid, 6-(2,4-diaminophenyl)azo-3-4-(2,4-diaminophenyl)azo-3-sulfophenylazo-4-hydroxy-, disodium salt
You may like
-
Atracurium Besylate EP Impurity CView Details
86293-35-8 -
Atracurium Besylate EP Impurity DView Details
87046-72-8 -
Azithromycin EP Impurity BView Details
307974-61-4 -
Azithromycin EP Impurity CView Details
620169-47-3 -
Azithromycin EP Impurity OView Details
763924-54-5 -
Azithromycin Imp DView Details
612069-26-8 -
Ceftaroline fosamil Acetate HydrateView Details
400827-55-6 -
Cetirizine Glycerol Ester Impurity HydrochlorideView Details
1243652-36-9
Statement: All products displayed on this website are only used for non medical purposes such as industrial applications or scientific research, and cannot be used for clinical diagnosis or treatment of humans or animals. They are not medicinal or edible.