C.I. Direct red 42
C.I. Direct red 42 Basic information
- Product Name:
- C.I. Direct red 42
- Synonyms:
-
- C.I. Direct red 42
- 1,3-Naphthalenedisulfonic acid, 6-amino-5-((4'-((6-amino-1-hydroxy-3-sulfo-2-naphthalenyl)azo)(1,1'-biphenyl)-4-yl)azo)-, trisodium salt
- 6-amino-5-[[4-[4-[(6-amino-1-oxido-3-sulfonaphthalen-2-yl)diazenyl]phenyl]phenyl]diazenyl]naphthalene-1,3-disulfonate
- C.I.Direct Red 42:C.I.22180
- Direct Red 42
- CAS:
- 6548-39-6
- MF:
- C32H21N6Na3O10S3
- MW:
- 814.70765
- Mol File:
- 6548-39-6.mol
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C.I. Direct red 42 Chemical Properties
- EPA Substance Registry System
- C.I. Direct Red 42 (6548-39-6)
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C.I. Direct red 42 Usage And Synthesis
Preparation
4-(4-Aminophenyl)benzenamine double nitriding, first and 6-Aminonaphthalene-1,3-disulfonic acid?coupling, and then in alkaline conditions and 7-Amino-4-hydroxynaphthalene-2-sulfonic acid coupling.
Properties and Applications
dark blue light red. Soluble in water for product red, slightly soluble in ethanol for shallow peachblossom. The strong sulfuric acid in blue, diluted for Shallow red time The dye solution to join strong hydrochloric acid for red light brown, have precipitation; Add thick sodium hydroxide solution for orange brown.
| Standard | Acid Resistance | Alkali Resistance | Light Fastness | Soaping | Water | ||
| Fading | Stain | Fading | Stain | ||||
| ISO | 3 | 5 | 1 | 1 | 1-2 | ||
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C.I. Direct red 42(6548-39-6)Related Product Information
- vital new red
- 5-[[4'-[(6-Amino-1-hydroxy-3-sulfo-2-naphtyl)azo]-1,1'-biphenyl-4-yl]azo]-2-hydroxybenzoic acid disodium salt
- DIRECT FAST RED 3B
- DIRECT RED 31
- DIRECT RED 37
- 7,7'-[Ureylenebis[(1-hydroxy-3-sodiosulfonaphthalene-6,2-diyl)azo(4,1-phenylene)azo]]bis[naphthalene-1,3-disulfonic acid disodium] salt
- C.I. Direct Red 36, tetrasodium salt
- DIRECT RED 4
- 3-Amino-4-[[4'-[(2-amino-8-hydroxy-6-sodiosulfo-1-naphthalenyl)azo]-1,1'-biphenyl-4-yl]azo]naphthalene-2,7-disulfonic acid disodium salt