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Vat Blue 4

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Vat Blue 4 Basic information

Product Name:
Vat Blue 4
Synonyms:
  • 14,18-anthrazinetetrone,6,15-dihydro-9
  • 6,15-dihydroanthrazine-5,9,14,18-tetrone
  • anthraquinonedeepblue
  • aticvatbluexrn
  • benzadonebluers
  • bleusolanthrene
  • blueanthraquinonepigment
  • 6,15-Dihydro-5,9,14,18-anthrazinetetrone, Pigment Blue 60
CAS:
81-77-6
MF:
C28H14N2O4
MW:
442.42
EINECS:
201-375-5
Mol File:
81-77-6.mol
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Vat Blue 4 Chemical Properties

Melting point:
470-500°C
Boiling point:
553.06°C (rough estimate)
Density 
1.3228 (rough estimate)
refractive index 
1.5800 (estimate)
storage temp. 
Sealed in dry,Room Temperature
pka
-1.40±0.20(Predicted)
Colour Index 
69800
Water Solubility 
<0.1 g/100 mL at 21 ºC
Merck 
14,4934
Stability:
Incompatible with strong oxidizing agents.
EPA Substance Registry System
C.I. Pigment Blue 60 (81-77-6)
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Safety Information

Risk Statements 
20/21/22
Safety Statements 
22-36/37/39
RTECS 
CB8761100
Hazardous Substances Data
81-77-6(Hazardous Substances Data)
Toxicity
LD50 oral in rat: 2gm/kg

MSDS

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Vat Blue 4 Usage And Synthesis

Chemical Properties

blue needles with a metallic lustre

Uses

Mainly to dye cotton.

Uses

Indanthrone (Pigment Blue 60) functions as a blue pigment or as a dye.

Preparation

(a) in potassium nitrate, LvSuanJia, glucose or organic acid salt (such as formic acid potassium or acetic acid potassium or the mixture of both) under the existence of, with potassium hydroxide treatment 2-Aminoanthracene-9,10-dione;

Definition

A blue vat dye or pigment. The molecule consists of two anthraquinone nuclei linked through two –NH groups.

Reactions

As a pigment, indanthrone is a particulate, insoluble solid dispersed directly into a vehicle, whereas as a dye it is reduced to a base-soluble hydroquinone derivative and then reoxidized onto a solid substrate.

General Description

Blue needles with a metallic luster or fine fluffy deep blue powder.

Air & Water Reactions

Insoluble in water.

Fire Hazard

Flash point data for Vat Blue 4 are not available. Vat Blue 4 is probably combustible.

Purification Methods

Crystallise indanthrene repeatedly from 1,2,4-trichlorobenzene to give a blue powder. It is soluble in alkali and conc H2SO4. [Weinstein & Merritt J Am Chem Soc 81 3759 1959, Beilstein 24 II 317, 24 III/IV 2193.]

Properties and Applications

red light blue. Slightly soluble in chloroform (heat), o-chlorophenol,Quinoline, insoluble in acetic acid, acetone, ethanol, pyridine, toluene, xylene. The strong sulfuric acid for brown, after diluted blue precipitation; In alkaline insurance powder solution for blue, acidic solutions for the red light in blue. And C.I. Vat ?Blue 4, C.I. Pigment Blue 60 the same chemical structure.

Vat Blue 4Supplier

J & K SCIENTIFIC LTD.
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010-82848833- ;010-82848833-
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Meryer (Shanghai) Chemical Technology Co., Ltd.
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21-61259100-
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sh@meryer.com
TAIYUAN RHF CO.,LTD.
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+86 351 7031519
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TCI (Shanghai) Development Co., Ltd.
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021-67121386 / 800-988-0390
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Sales-CN@TCIchemicals.com
Energy Chemical
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021-58432009-
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sales8178@energy-chemical.com