C.I. Acid Red 81
- CAS No.
- 6846-33-9
- Chemical Name:
- C.I. Acid Red 81
- Synonyms
- C.I.68200;Acid Red 81;C.I. Acid Red 81;C.I.Acid Red 81:C.I.68200;4-[(2,7-Dihydro-3-methyl-2,7-dioxo-3H-dibenz[f,ij]isoquinolin-6-yl)amino]benzenesulfonic acid sodium salt
- CBNumber:
- CB42078777
- Molecular Formula:
- C23H15N2NaO5S
- Molecular Weight:
- 454.43037
- MDL Number:
- MOL File:
- 6846-33-9.mol
C.I. Acid Red 81 Chemical Properties,Uses,Production
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 |
C.I. Acid Red 81 Preparation Products And Raw materials
Raw materials
Preparation Products
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
C.I.Acid Red 81:C.I.68200
Acid Red 81
6846-33-9