C.I. Acid Red 81
- CAS NO.:6846-33-9
- Empirical Formula: C23H15N2NaO5S
- Molecular Weight: 454.43037
What is C.I. Acid Red 81?
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 |
Safety information for C.I. Acid Red 81
New Products
Tubulysin D Tubulysin F Tubulysin G Tubulysin A Tubulysin I 2,2-Difluoropropanol 3-FLUOROPYRROLIDINE HYDROCHLORIDE 4-CYANO-TETRAHYDROPYRAN-4-CARBOXYLIC ACID 4,4-DIFLUOROPIPERIDINE 2H-Pyran, 4-ethynyltetrahydro- 3-Aminocyclobutanone hydrochloride (1R,2S)-2-(3,4-Difluorophenyl)cyclopropanamine 2-[[(3aR,4S,6R,6aS)-6-Aminotetrahydro-2,2-dimethyl-4H-cyclopenta-1,3-dioxol-4-yl]oxy]ethanol ethanedioate Fuel shell Imeglimin Hydrochloride IH 2-(1-(Mercaptomethyl) cyclopropyl) acetonitrile 2-[2-[3(S)-3[2-(7-chloro-2-quinolinyl) ethenyl] phenyl-3- hydroxyl propyl] phenyl]-2-propanol Lubiprostone Magnesium Trisilicate Latanoprostene Bunod Flame Retardant Zinc Borate methyl 3-fluoro-4- thiomorpholino phenylcarbamate (R)-(3-(3-fluoro-4- thiomorpholinophenyl)-2- oxooxazolidin-4-yl) methyl methanesulfonate 7-Methoxyquinoline-4-carboxylic acidRelated products of tetrahydrofuran
disodium 7-hydroxy-8-[[4'-[[4-[[(p-tolyl)sulphonyl]oxy]phenyl]azo][1,1'-biphenyl]-4-yl]azo]naphthalene-1,3-disulphonate
2-Chloro-4-[(2,7-dihydro-3-methyl-2,7-dioxo-3H-dibenz[f,ij]isoquinolin-6-yl)amino]benzenesulfonic acid sodium salt
ACID RED 88
ACID RED 89
disodium 4-[(2,7-dihydro-3-methyl-2,7-dioxo-3H-dibenz[f,ij]isoquinolin-6-yl)amino]-benzene-1,3-disulphonate
EOSIN B
ACID RED 9
disodium 4,4'-bis[(2-hydroxy-1-naphthyl)azo]-5,5'-dimethoxy[1,1'-biphenyl]-2,2'-disulphonate
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