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| 4-Amino-3,6-bis[[4-[(2,4-diamino-5-methylphenyl)azo]phenyl]azo]-5-hydroxynaphthalene-2,7-disulfonic acid disodium salt Basic information |
Product Name: | 4-Amino-3,6-bis[[4-[(2,4-diamino-5-methylphenyl)azo]phenyl]azo]-5-hydroxynaphthalene-2,7-disulfonic acid disodium salt | Synonyms: | 4-Amino-3,6-bis[[4-[(2,4-diamino-5-methylphenyl)azo]phenyl]azo]-5-hydroxynaphthalene-2,7-disulfonic acid disodium salt;C.I.35260;C.I.Direct Black 28;Columbia Fast Black V;Cutamin Black CV;Rayon Black R;sodium,4-amino-3-[[4-[(2,4-diamino-5-methylphenyl)diazenyl]phenyl]diazenyl]-6-[[4-[(2,4-diamino-5-methylphenyl)diazenyl]phenyl]hydrazinylidene]-5-oxonaphthalene-2,7-disulfonic acid;Direct Black 28 | CAS: | 6745-67-1 | MF: | | MW: | 0 | EINECS: | | Product Categories: | | Mol File: | 6745-67-1.mol | |
| 4-Amino-3,6-bis[[4-[(2,4-diamino-5-methylphenyl)azo]phenyl]azo]-5-hydroxynaphthalene-2,7-disulfonic acid disodium salt Chemical Properties |
| 4-Amino-3,6-bis[[4-[(2,4-diamino-5-methylphenyl)azo]phenyl]azo]-5-hydroxynaphthalene-2,7-disulfonic acid disodium salt Usage And Synthesis |
Preparation | 4-Nitrobenzenamine (2 Moore) diazo, one in acid conditions, a in alkaline conditions and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid (1 Moore) coupling, and then will the nitro reduction for amino, again diazo, and 4-Methylbenzene-1,3-diamine (2 Moore) coupled. | Properties and Applications | black. Soluble in water for blue-ray black, slightly soluble in ethanol is green. The strong sulfuric acid for blue-ray green, blue after diluted precipitation. The dye solution to join strong hydrochloric acid blue precipitation; Add thick sodium hydroxide solution for green light blue.
Standard
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Acid Resistance
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Alkali Resistance
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Light Fastness
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Soaping
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Water
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Fading
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Stain
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Fading
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Stain
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ISO
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2-3
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5
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3-4
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1-2
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2-3
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| 4-Amino-3,6-bis[[4-[(2,4-diamino-5-methylphenyl)azo]phenyl]azo]-5-hydroxynaphthalene-2,7-disulfonic acid disodium salt Preparation Products And Raw materials |
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