C.I. Acid Red 81
C.I. Acid Red 81 Basic information
- Product Name:
- C.I. Acid Red 81
- Synonyms:
-
- C.I. Acid Red 81
- 4-[(2,7-Dihydro-3-methyl-2,7-dioxo-3H-dibenz[f,ij]isoquinolin-6-yl)amino]benzenesulfonic acid sodium salt
- C.I.68200
- Acid Red 81
- C.I.Acid Red 81:C.I.68200
- CAS:
- 6846-33-9
- MF:
- C23H15N2NaO5S
- MW:
- 454.43037
- Mol File:
- 6846-33-9.mol
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C.I. Acid Red 81 Usage And Synthesis
Preparation
1-Bromo-4-(N-methylacetamido)anthraquinone?condensation into 6-Bromo-3-methyl-3H-naphtho[1,2,3-de]quinoline-2,7-dione, then with aniline condensation, again with hair smoke sulphonated sulfuric acid, and translated into sodium salt.
Properties and Applications
colourful red blue light. Soluble in alcohol. The strong sulfuric acid for blue-ray red, diluted into pink.
| Standard | Light Fastness | Soaping | Persperation Fastness | Oxygen bleaching | Fastness to seawater | |||
| Fading | Stain | Fading | Stain | Fading | Stain | |||
| ISO | 5-6 | 3 | 3-4 | 3 | 2-3 | 3-4 | ||
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C.I. Acid Red 81(6846-33-9)Related Product Information
- EOSIN
- disodium 4,4'-bis[(2-hydroxy-1-naphthyl)azo]-5,5'-dimethoxy[1,1'-biphenyl]-2,2'-disulphonate
- ACID RED 9
- EOSIN B
- disodium 4-[(2,7-dihydro-3-methyl-2,7-dioxo-3H-dibenz[f,ij]isoquinolin-6-yl)amino]-benzene-1,3-disulphonate
- ACID RED 89
- ACID RED 88
- 2-Chloro-4-[(2,7-dihydro-3-methyl-2,7-dioxo-3H-dibenz[f,ij]isoquinolin-6-yl)amino]benzenesulfonic acid sodium salt
- disodium 7-hydroxy-8-[[4'-[[4-[[(p-tolyl)sulphonyl]oxy]phenyl]azo][1,1'-biphenyl]-4-yl]azo]naphthalene-1,3-disulphonate