Solvent Red 52 CAS# 81-39-0

The chemical name of C.I. Solvent Red 52 is 3-methyl-6-(p-toluidyl)-3H-dibenzo[f,ij]isoquinoline-2,7-dione, which belongs to functional solvent dyes and can be used in A variety of resin and fiber coloring.

Solvent Red 52 is purple-red crystal with a melting point of 269°C-270°C. It is soluble in water and turns dark red in concentrated sulfuric acid. It produces red precipitate after dilution. At present, the synthesis method of this product is to use 4-bromo (or chloro)-N-methylpyridine anthrone and p-toluidine as raw materials, condense the two to obtain the product, and filter and dry to obtain the finished product.

Solvent Red 52 CAS# 81-39-0

Solvent Red 52 Basic information
Product Name: Solvent Red 52
Synonyms: 3H-Naphtho1,2,3-dequinoline-2,7-dione, 3-methyl-6-(4-methylphenyl)amino-;3-methyl-6-[(4-methylphenyl)amino]-3H-Dibenz[f,ij]isoquinoline-2,7-dione;abcol red 5b;Solvent red 52 (C.I. 68210);C.I.68210;SOLVENT RED 52;2,3-Dihydro-3-methyl-6-(p-toluidino)-7H-dibenz[f,ij]isoquinoline-2,7-dione;3H-Dibenz(F,ij)isoquinoline-2,7-dione, 3-methyl-6-((4-methylphenyl)amino)-
CAS: 81-39-0
MF: C24H18N2O2
MW: 366.41
EINECS: 201-346-7
Product Categories: Solvent Dyestuff
Mol File: 81-39-0.mol
Solvent Red 52 Structure
Solvent Red 52 Chemical Properties
Boiling point 585.0±50.0 °C(Predicted)
density 1.36±0.1 g/cm3(Predicted)
vapor pressure 0-0Pa at 25℃
solubility Chloroform (Slightly), Methanol (Slightly), Pyridine (Slightly)
form Solid
pka 0.46±0.20(Predicted)
color Dark Purple to Black
Water Solubility 750-2880900ng/L at 20-30℃
LogP 4.506-4.8 at 25℃
CAS DataBase Reference 81-39-0(CAS DataBase Reference)
EPA Substance Registry System 3H-Dibenz[f,ij]isoquinoline-2,7-dione, 3-methyl-6-[(4-methylphenyl)amino]- (81-39-0)
Safety Information
MSDS Information
Solvent Red 52 Usage And Synthesis
Uses Solvent Red 52 is used in method for production of Poly(trimethylene furandicarboxylate) using Zinc catalyst.
Preparation (a) 6-Bromo-3-methyl-3H-naphtho[1,2,3-de]quinoline-2,7-dione or 1-Bromo-4-(N-methylacetamido)anthraquinone and p-Methylaniline condensation; (b)N-(4-(p-toluidino)-9,10-dioxo-9,10-dihydroanthracen-1-yl)-N-methylacetamide closed loop into Anthrapyridone.
Properties and Applications blue light red. Soluble in water and Pyridine . In concentrated sulfuric acid for deep red, red precipitation after dilution. Used for acetate, polyethylene, thermal plastic coloring.
Solvent Red 52 Preparation Products And Raw materials
Raw materials Anthrone–>Methyl propyl carbonate–>3-METHYL-3H-NAPHTHO[1,2,3-DE]QUINOLINE-2,7-DIONE–>N-(4-(p-toluidion)-9,10-dioxo-9,10-dihydroanthracen-1-yl)-N-methylacetamide–>6-bromo-3-methyl-3H-dibenz[f,ij]isoquinoline-2,7-dione–>p-Toluidine–>1-bromo-4-(N-methylacetamido)anthraquinone–>6-bromo-3-methyl-3H-dibenz[f,ij]isoquinoline-2,7-dione–>p-Toluidine
Preparation Products ACID RED 80

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