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Vat Black 8

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Vat Black 8 Basic information

Product Name:
Vat Black 8
Synonyms:
  • 1H-benz[6,7]indazole[2,3,4-fgh]naphth[2'',3'':6',7']indolo[3',2':5,6]anthra[2,1,9-mna]acridine-2,7,10,15-tetrone
  • Dycosthren Grey M
  • Grey M
  • Hibeithrene Grey M
  • Indanthren Grey M
  • Mikethrene Grey M
  • Nihonthrene Grey M
  • Novatic Grey M
CAS:
2278-50-4
MF:
C45H19N3O4
MW:
665.66
EINECS:
218-906-1
Product Categories:
  • Organics
Mol File:
2278-50-4.mol
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Vat Black 8 Chemical Properties

Boiling point:
685.55°C (rough estimate)
Density 
1.2394 (rough estimate)
refractive index 
1.7790 (estimate)
pka
13.18±0.20(Predicted)
EPA Substance Registry System
1H-Benz[6,7]indazolo[2,3,4-fgh]naphth[2'',3'':6',7']indolo[3',2':5,6]anthra[2,1,9-mna]acridine-2,7,10,15-tetrone (2278-50-4)
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Vat Black 8 Usage And Synthesis

Preparation

3,9-Dibromo-7H-benzo[de]anthracen-7-one, 3H-naphtho[2,3-f]indazol-3-one and 1-Aminoanthracene-9,10-dione in Potassium hydroxide under the existence of condensation, closed loop.

Safety Profile

Mildly toxic by intraperitoneal and ingestion routes. An eye irritant.When heated to decomposition it emits toxic fumes of NOx.

Properties and Applications

blue light grey. Black powder. Insoluble in water, Acetone, Etanol, Toluene and Chloroform, slightly soluble in 2 – Chlorophenol, Pyridine . In concentrated sulfuric acid to have yellow green: alkaline reduction leuco for blue light green; Acid reduction leuco for red brown: mainly used in the cotton fabric jig dyeing, dyeing and suspended pad dyeing, also used for Fiber/cotton, polyester-cotton blended fabric two bath set of dye dyeing. Suitable for suspension pad dyeing deep, shallow gray, and can spell dye all kinds of noise. Its main leuco dye yarn, can also be used to viscose and silk dyeing.

Standard Ironing Fastness Chlorine bleach Light Fastness Mercerized Oxygen bleach Soaping
Fading Stain
ISO 4 4-5 7 4 5 4 5

Vat Black 8Supplier

Winchem Industrial Co. Ltd
Tel
0574-83851061
Email
info@win-chemical.com
China Langchem Inc.
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0086-21-58956006
Hangzhou Yuhao Chemical Technology Co., Ltd
Tel
0571-82693216
Email
info@yuhaochemical.com
Shanghai JONLN Reagent Co., Ltd.
Tel
400-0066400 13621662912
Email
422131432@qq.com
Alfa Chemistry
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1-516-6625404
Email
support@alfa-chemistry.com