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Vat Blue 4

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Vat Blue 4 Basic information

Product Name:
Vat Blue 4
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)
Colour Index 
69800
pka
-1.40±0.20(Predicted)
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.

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.]

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Vat Blue 4SupplierMore

J & K SCIENTIFIC LTD.
Tel:
010-82848833- ;010-82848833-
Email:
jkinfo@jkchemical.com;market6@jkchemical.com
Meryer (Shanghai) Chemical Technology Co., Ltd.
Tel:
21-61259100-
Email:
sh@meryer.com
TAIYUAN RHF CO.,LTD.
Tel:
+86 351 7031519
Email:
sales@RHFChem.com
TCI (Shanghai) Development Co., Ltd.
Tel:
021-67121386 / 800-988-0390
Email:
Sales-CN@TCIchemicals.com
Energy Chemical
Tel:
021-58432009
Email:
sales8178@energy-chemical.com
Basic information Safety Related Supplier