Home >Organic Chemicals > Vat Blue 4B
- Chemical Name: Vat Blue 4B
- CAS No.: 2475-31-2
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1.What is the Vat Blue 4B ?
Ciba Blue 2B (CAS# 2475-31-2) is a halogenated indigo dye and pollutant contributing 1,3,6,8-tetrabromocarbazole and some other halogenated carbazoles to the environment.
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482-89-3,12626-73-2
1H,1H'-2,2'-Biindolylidene-3,3'-dione
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2475-31-2
5,7-dibromo-2-(5,7-dibromo-1,3-dihydro-3-oxo-2H-indol-2-ylidene)-1,2-dihydro-3H-indol-3-one
| Conditions | Yield |
|---|---|
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With
chlorosulfonic acid; bromine;
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With
sulfuric acid; bromine;
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With
sulfuryl dichloride; bromine;
at -10 - 0 ℃;
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With
bromine;
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With
bromine;
at 170 ℃;
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With
bromine; sodium chloride;
at 210 ℃;
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With
bromine;
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2475-31-2
5,7-dibromo-2-(5,7-dibromo-1,3-dihydro-3-oxo-2H-indol-2-ylidene)-1,2-dihydro-3H-indol-3-one
| Conditions | Yield |
|---|---|
|
With
chlorosulfonic acid; phosphorus pentaoxide; bromine;
at -10 - 0 ℃;
5.7.5'.7'-tetrabromo-indigo;
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2.What is the CAS number for Vat Blue 4B ?
The CAS number of Vat Blue 4B is 2475-31-2.
More information of Vat Blue 4B 2475-31-2 are:
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CAS?Number |
2475-31-2 |
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Density |
2.313 g/cm3 |
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Boiling Point |
563.381 °C at 760 mmHg |
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Flash Point |
294.523 °C |
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Vapor Pressure |
1.02E-12mmHg at 25°C |
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Refractive Index |
1.6300 (estimate) |
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HS CODE |
2933990090 |
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PSA |
58.20000 |
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LogP |
6.14080 |
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Pka |
-7.15±0.20(Predicted) |
3.What are another words for Vat Blue 4B ?
Synonyms?for?Vat Blue 4B 2475-31-2:Indigotin,5,5',7,7'-tetrabromo- (6CI);[D2,2'-Biindoline]-3,3'-dione, 5,5',7,7'-tetrabromo- (7CI,8CI);5,5',7,7'-Tetrabromoindigo;Ahcovat Printing Blue 2BD;5,7-Dibromo-2-(5,7-dibromo-3-oxo-1,3-dihydro-2H-indol-2-ylidene)-1,2-dihydro-3H-indol-3-one;Arlanone Blue 2B;BASF Brilliant Indigo 4B;BASF Brilliant Indigo 4BC;Brilliant Indigo 4BR;BrilliantIndigo 4BV;Bromindigo;Bromindigo 2BD;C.I. 73065;C.I. Vat Blue 5;Ciba Blue 2BD;Ciba Blue 2BDG;Ciba Blue 2BN;Durindone Printing Blue 4BC;Hostavat Blue 2BD;Hostavat Blue 4BR;Indigo 4B;Mitsui Tsuya Indigo 2B;Solindene Blue 2BD;Sulfanthrene Blue 2B;Tetrabromoindigo;Thiovat Brilliant Indigo 4BR;Tina Blue 2B;Tsuya Indigo 2B;
4.What is the molecular formula of Vat Blue 4B?
The chemical formula of ?Vat Blue 4B is?C16H6Br4N2O2 which containing 16 Carbon atoms,6 Hydrogen atoms,4 Bromine atoms,2 Nitrogen atoms and 2 Oxygen atoms,and the molecular weight of??Vat Blue 4B?is 577.852.
5.What is Vat Blue 4B (2475-31-2) used for?
Vat Blue 4B is a blue-colored dye used in various applications, including dyeing cotton, viscose, silk, and wool. It is a dark blue powder that is insoluble in water but soluble in xylene, nitrobenzene, and tetrahydronaphthalene. It can be reduced with alkaline or acid to produce different shades of yellow.
InChI:InChI=1/C16H6Br4N2O2/c17-5-1-7-11(9(19)3-5)21-13(15(7)23)14-16(24)8-2-6(18)4-10(20)12(8)22-14/h1-4,21-22H/b14-13-
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