65381-35-3

Basic information

• Product Name: 5,12-dihydroquino[2,3-b]acridine-7,14-dione
• Synonyms: C.I. 46500; C.I. Pigment Violet 19; Cinquasia red; QUINACRIDONE RED; QUINACRIDONE VIOLET; CI 73900; Linear quinacridone; CI Pigment Red 122; Cinquasia B-RT 796D; Cinquasia Red B; Cinquasia Red Y; Cinquasia Red Y-RT 759D; Cinquasia Violet; Cinquasia Violet R; Cinquasia Violet R-RT 791D; Dark violet; E 3B Red; Fastogen Super Red BN; Fastogen Super Red YE; HSDB 6136; Hostaperm Red E 3B; Hostaperm Red E 5B; Hostaperm Red Violet ER; Hostaperm Red Violet ER 02; Hostapern Red Violet ER; Linear trans quinacridone; Monastral Red; Monastral Red B; Monastral Red Y; Monastral Violet 4R; Monastral Violet R; Monastrol Red Y; NSC 316165; PV Fast Red E 3B; PV Fast Red E 5B; PV-Fast Red E3B; PV-Fast Red E5B; Paliogen Red BG; Permanent Magenta; Permanent Red E 3B; Permanent Red E 5B; Pigment Pink Quinacridone S; Pigment Quinacridone Red; Pigment Violet #19; Pigment Violet Quinacridone; Quinacridone; Quinacridone Red MC; Quinacridone Violet MC; Red E 3B; Sunfast Red 19; Sunfast Violet; Quino(2,3-b)acridine-7,14-dione, 5,12-dihy
• CAS NO: 65381-35-3
• Molecular Formula: C₂₀H₁₂N₂O₂
• Molecular Weight: 312.3215
• EINECS: 213-879-2
• Mol File: 65381-35-3.mol

Chemical Properties

• Boiling Point: 568.5°C at 760 mmHg
• Flash Point: 221.3°C
• Density: 1.371g/cm³
• Vapor Pressure: 6.14E-13mmHg at 25°C
• Refractive Index: 1.702
• CAS DataBase Reference: 5,12-dihydroquino[2,3-b]acridine-7,14-dione(CAS DataBase Reference)
• NIST Chemistry Reference: 5,12-dihydroquino[2,3-b]acridine-7,14-dione(65381-35-3)
• EPA Substance Registry System: 5,12-dihydroquino[2,3-b]acridine-7,14-dione(65381-35-3)

Safety Data

• Hazardous Substances Data: 65381-35-3(Hazardous Substances Data)

Upstream product

• 10109-95-2 2,5-di(phenylamino)-terephthalic acid 
• 4898-56-0 2,5-dianilino-3,6-dihydroterephthalic acid diethyl ester 
• 67906-32-5 C₂₁H₁₈N₂O₄ 
• 10291-28-8 2,5-di(4'-methylphenylamino)terephthalic acid 
• 5862-38-4 5,6,12,13-tetrahydro-quino[2,3-b]acridine-7,14-dione 
• 14297-60-0 2,5-dianilinoterephthalic acid dimethyl ester 

Downstream Products

• 99762-80-8 N,N’-dibutylquinacridone 

Relevant articles and documents

QUINACRIDONE SOLID SOLUTION PIGMENT, PIGMENT COLORANT, INKJET INK, AND METHOD OF PRODUCING SOLID SOLUTION PIGMENT

PROBLEM TO BE SOLVED: To provide: a quinacridone solid solution pigment which has a new color tone, an excellent pigment characteristic and a novel skeleton; and a pigment colorant and an inkjet ink that employ the same. SOLUTION: A quinacridone solid solution pigment is a solid solution of a compound represented by the specified general formula (1) and a quinacridone represented by the specified general formula (2). Also provided are a method of producing the same, and a colorant and an inkjet ink that contain the solid solution pigment. SELECTED DRAWING: None COPYRIGHT: (C)2020,JPOandINPIT

Preparation method for quinacridone and derivatives of quinacridone

The invention relates to the field of synthesis of organic pigments and discloses a preparation method for quinacridone and derivatives of the quinacridone. The preparation method comprises the steps that dimethyl succinate generates sodium dimethyl succinylsuccinate (DMSS) through cyclic condensation under an effect of sodium methoxide, and then being acidized into DMSS; condensation reaction occurs between the DMSS and aniline or substituted aniline, an intermediate product generated during condensation is directly oxidized and dehydrogenated by sodium 3-nitrobenzene sulfonate to obtain an oxidative product; and finally coarse products of the quinacridone or the derivatives of the quinacridone are prepared from the oxidative product in a ring-closing mode under an effect of polyphosphoric acid, and finally finished products of the quinacridone or the derivatives of the quinacridone are obtained through pigmentation treatment.

METHOD FOR MANUFACTURING DISPERSION OF QUINOLINE DERIVATIVE

A method for manufacturing a dispersion of a quinoline derivative that is dispersed at a high concentration and has a small particle size. The method includes the steps of preparing a solution by dissolving an N-arylanthranilic acid derivative in an organosulfonic acid, heating the solution and obtaining a reaction liquid in which a quinoline derivative has been produced by a condensation ring-closing reaction, and obtaining a dispersion of the quinoline derivative by mixing the reaction liquid with an aqueous solution. The step of mixing the reaction liquid with an aqueous solution may be performed in a mixing field having a micro-channel.

Process for Preparing Alpha Quinacridone Pigments

A process for preparing alpha phase quinacridone pigment by ring-closing 2,5-dianilino-terephthalic acid in concentrated polyphosphoric acid, treatment with at least one glycol, followed by striking to water and conditioning the resulting washed pigment with alcohol in the presence of alkali. The resulting pigment is considerably opaque and yellow versus gamma quinacridone of large particle size.

Quinacridone pigment compositions comprising unsymmetrically substituted components

The present invention relates to a novel quinacridone pigment compositions, a process using a mixed amine synthesis for the ultimate production of the compositions and to their use as colorants for pigmenting high molecular weight organic materials.

PROCESS FOR THE PREPARATION OF ORGANIC PIGMENTS

The present invention relates to advantageous processes for the manufacture of organic pigments and their precursors. The invention particularly relates to reactions carried out in an "All In One Reactor" (Draiswerke GmbH, Germany), a kneader like the TurbuKneader of the same company, a paddle dryer like the Turbudry of the same company or a related system and thereby submitting the reaction mixtures to enhanced driving power as expressed by a Froude number>1, the reaction mixture being caused to react in high concentrations at elevated temperature.

PREPARATION OF BETA QUINACRIDONE PIGMENTS

A novel method for the preparation of a beta quinacridone pigment is described by the oxidation of 6,13-dihydroquinacridone in the presence of polyvinyl pyrrolidone, a catalyst and optionally a particulate quinacridone and/or a particle growth inhibitor using hydrogen peroxide as the oxidant.

OXIDATION PROCESS FOR PREPARING QUINACRIDONE PIGMENTS

The present invention relates to a process of preparing quinacridone by oxidizing a 6,13-dihydroquinacridone salt corresponding to the quinacridone pigment with hydrogen peroxide as the oxidizing agent in the presence of 2,7-anthraquinone disulfonic acid as catalyst. The inventive process is economical and environmentally friendly and yields high performance quinacridone pigments in a high yield.