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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 |  |
| | 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) |
| | 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.
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Standard
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Ironing Fastness
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Chlorine bleach
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Light Fastness
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Mercerized
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Oxygen bleach
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Soaping
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Fading
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Stain
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ISO
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4
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4-5
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7
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4
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5
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4
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5
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| | Vat Black 8 Preparation Products And Raw materials |
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