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C.I. Acid Red 81

C.I. Acid Red 81 Structure
C.I. Acid Red 81 structure
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
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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

1-bromo-4-(N-methylacetamido)anthraquinone 6-bromo-3-methyl-3H-dibenz[f,ij]isoquinoline-2,7-dione Aniline

Preparation Products

6846-33-9(C.I. Acid Red 81)Related Search:

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

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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