4395-53-3

Basic information

• Product Name: Vat Black 25
• Synonyms: Vat Olivet;3-(anthraquinon-1-ylamino)anthra[2,1,9-mna]naphth[2,3-h]acridine-5,10,15(16H)-trione;Vat Olive (Original Powder);Anthra2,1,9-mnanaphth2,3-hacridine-5,10,15(16H)-trione, 3-(9,10-dihydro-9,10-dioxo-1-anthracenyl)amino-;C.I.VATBLACK25;Vat black 25 (C.I. 69525);Olive T;Vat Olive Green T
• CAS NO: 4395-53-3
• Molecular Formula: C₄₅H₂₂N₂O₅
• Molecular Weight: 670.66658
• EINECS: 224-519-9
• Product Categories: Organics
• Mol File: 4395-53-3.mol
• Article Data: 0

Chemical Properties

• Appearance: /
• Density: 1.527 g/cm³
• Refractive Index: 1.826
• PKA: -2.72±0.20(Predicted)
• CAS DataBase Reference: Vat Black 25(CAS DataBase Reference)
• NIST Chemistry Reference: Vat Black 25(4395-53-3)
• EPA Substance Registry System: Vat Black 25(4395-53-3)

Safety Data

• Hazardous Substances Data: 4395-53-3(Hazardous Substances Data)

Usage

Description

Vat Black 25 is a brown powder that exhibits unique color reactions in different chemical environments. In concentrated sulfuric acid, it turns green, but upon dilution, it forms a black precipitate. When exposed to concentrated nitric acid, it takes on a reddish-brown hue. Alkaline reduction results in a grey leuco base, while acid reduction yields a dark olive leuco base. This substance is primarily utilized in cotton fiber dyeing and is not typically used for printing purposes.

Uses

Used in Textile Industry:
Vat Black 25 is used as a dye for cotton fibers, specifically for dyeing through methods such as suspension pad dyeing. It is also suitable for dyeing various types of noise and leuco can dye cotton yarn. Additionally, it can be used for dyeing silk and wool, offering good washing fastness and resistance to sunlight.
The standard ratings for Vat Black 25 in various tests are as follows:
Ironing Fastness: ISO 4, AATCC 5
Chlorine bleach: ISO 4, AATCC 4
Light Fastness: ISO 8, AATCC 7-8
Mercerized: Not specified
Oxygen bleach: ISO 5, AATCC 5
Soaping: ISO 4-5, AATCC 4-5
Fading: Not specified
Stain: Not specified
These ratings indicate the performance of Vat Black 25 in different conditions, showcasing its suitability for various dyeing applications in the textile industry.

Preparation

1-Aminoanthracene-9,10-dione (2 Moore) and 3,9-Dibromo-7H-benzo[de]anthracen-7-one in boiling naphthalene, in copper oxide and Sodium carbonate under the existence of condensation,?And then boiling isobutanol cyclization with potassium hydroxide.

Standard

Ironing Fastness

Fading

Stain

ISO

4

AATCC

5

InChI:InChI=1/C45H22N2O5/c48-41-26-6-1-3-8-28(26)44(51)38-30(41)10-5-11-34(38)46-21-12-13-22-23-18-19-35-37-24(14-16-31(36(23)37)43(50)33(22)20-21)25-15-17-32-39(40(25)47-35)45(52)29-9-4-2-7-27(29)42(32)49/h1-20,46-47H