131-92-0

Basic information

• Product Name: Vat Brown 3
• Synonyms: C.I. VAT BROWN 3;Vatbrown;Benzamide, N,N-(10,15,16,17-tetrahydro-5,10,15,17-tetraoxo-5H-dinaphtho2,3-a:2,3-icarbazole-4,9-diyl)bis-;Calcoloid Brown R.;Vat brown 3 (C.I. 69015);C.I. 69015;C.I. Pigment Brown 28;N,N'-(10,15,16,17-Tetrahydro-5,10,15,17-tetraoxo-5H-dinaphtho[2,3-a:2',3'-i]carbazole-4,9-diyl)bis(benzamide)
• CAS NO: 131-92-0
• Molecular Formula: C₄₂H₂₃N₃O₆
• Molecular Weight: 665.659
• EINECS: 205-044-6
• Product Categories: Dyes and Pigments;Organics
• Mol File: 131-92-0.mol
• Article Data: 1

Chemical Properties

• Boiling Point: 685.54°C (rough estimate)
• Appearance: /
• Density: 1.537
• Refractive Index: 1.7800 (estimate)
• Water Solubility: 8.337mg/L at 20℃
• CAS DataBase Reference: Vat Brown 3(CAS DataBase Reference)
• NIST Chemistry Reference: Vat Brown 3(131-92-0)
• EPA Substance Registry System: Vat Brown 3(131-92-0)

Safety Data

• Hazardous Substances Data: 131-92-0(Hazardous Substances Data)

Usage

Preparation

N-(5-chloro-9,10-dioxo-9,10-dihydroanthracen-1-yl)benzamide and N-(4-amino-9,10-dioxo-9,10-dihydroanthracen-1-yl)benzamide Condensation in the presence of copper, and then cyclized with sulfuric acid.

General Description

Odorless brown to dark brown powder.

Air & Water Reactions

Insoluble in water.

Reactivity Profile

Vat Brown 3 is incompatible with oxidizing and reducing agents. .

Fire Hazard

Flash point data for Vat Brown 3 are not available. Vat Brown 3 is probably combustible.

Flammability and Explosibility

Notclassified

Properties and Applications

brown. Deep red powder. Insoluble in water and Etanol, slightly soluble in Xylene for bordeaux red solution. In concentrated sulfuric acid for dark wine red, dilution to red light brown, flocks. Alkaline reduction leuco body for the color red; Acid reduction leuco for yellow brown. Is light brittle dye. To cotton affinity is poorer, less used in cotton dyeing. Suitable for direct printing, resist printing and aniline black color resist, also suitable for shallow, color of discharge. Suitable for cotton knits dyeing, more suitable for silk printing. But printing and dyeing fabric in sunlight exposure easy appear fiber brittle damage phenomenon. Can be used for viscose and wool dyeing, can also be processed into organic pigment. Standard Ironing Fastness Chlorine bleach Light Fastness Mercerized Oxygen bleach Soaping Fading Stain ISO 5 5 7 4-5 4-5 5 5 AATCC 5 5 7-8 4-5 4-5

Standard

Ironing Fastness

Fading

Stain

ISO

5

AATCC

5

InChI:InChI=1/C42H23N3O6/c46-37-24-14-7-8-15-25(24)38(47)34-33(37)30(44-42(51)22-12-5-2-6-13-22)20-28-23-18-19-27-32(35(23)45-36(28)34)40(49)26-16-9-17-29(31(26)39(27)48)43-41(50)21-10-3-1-4-11-21/h1-20,45H,(H,43,50)(H,44,51)

Upstream product

• 82-45-1 1-amino-9,10-anthracenedione 
• 3571-23-1 N-(9,10-dioxo-9,10-dihydro-[1]anthryl)-benzamide 
• 128-89-2 4,5'-bis-benzoylamino-1,1'-imino-di-anthraquinone 

Relevant articles and documents

PREPARATION METHOD OF ORIGINAL DYE OF VAT BROWN R

A preparation method of original dye of Vat Brown R comprises the following steps: a. after acylation of 1,5-diaminoanthraquinone, 1-amino-5-benzamidoanthraquinone was prepared by acidic hydrolysis; b. 1-benzamido-4-bromoanthraquinone was obtained from 1-aminoanthraquinone by acylation and bromination; c. a condensate of Vat Brown R was obtained by condensation reaction of 1-amino-5-benzamidoanthraquinone and 1-benzamido-4-bromoanthraquinone; d. the original dye of Vat Brown R was obtained from the condensate of Vat Brown R by ring closing reaction and oxidation reaction. The method omits one oxidation step, economizes significant amount of oxidizing agent, and reduces significant amount of waste water, so it is very beneficial to environment protection; and the method also exhibited the advantages of highly increasing product yield and reducing the costs of raw materials to an extent of more than 30%.