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
EINECS:
Product Categories:
Mol File:6846-33-9.mol
C.I. Acid Red 81 Structure
C.I. Acid Red 81 Chemical Properties
Safety Information
MSDS Information
C.I. Acid Red 81 Usage And Synthesis
Preparation1-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 Applicationscolourful 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 materials1-bromo-4-(N-methylacetamido)anthraquinone-->6-bromo-3-methyl-3H-dibenz[f,ij]isoquinoline-2,7-dione-->Aniline
Tag:C.I. Acid Red 81(6846-33-9) Related Product Information
disodium 4,4'-bis[(2-hydroxy-1-naphthyl)azo]-5,5'-dimethoxy[1,1'-biphenyl]-2,2'-disulphonate ACID RED 9 disodium 4-[(2,7-dihydro-3-methyl-2,7-dioxo-3H-dibenz[f,ij]isoquinolin-6-yl)amino]-benzene-1,3-disulphonate ACID RED 88 disodium 7-hydroxy-8-[[4'-[[4-[[(p-tolyl)sulphonyl]oxy]phenyl]azo][1,1'-biphenyl]-4-yl]azo]naphthalene-1,3-disulphonate EOSIN EOSIN B ACID RED 89 2-Chloro-4-[(2,7-dihydro-3-methyl-2,7-dioxo-3H-dibenz[f,ij]isoquinolin-6-yl)amino]benzenesulfonic acid sodium salt