| Company Name: |
Henan Alpha Chemical Co., Ltd.
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| Tel: |
0371-55013243 15324716602 |
| Email: |
2853979810@qq.com |
| Products Intro: |
Product Name:5,5'-Dibromo-4,4'-dichloroindigo
CAS:29245-44-1
Purity:98% Package:g；kg
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| | 5-bromo-2-(5-bromo-4-chloro-1,3-dihydro-3-oxo-2H-indol-2-ylidene)-4-chloro-1,2-dihydro-3H-indol-3-one Basic information |
| Product Name: | 5-bromo-2-(5-bromo-4-chloro-1,3-dihydro-3-oxo-2H-indol-2-ylidene)-4-chloro-1,2-dihydro-3H-indol-3-one | | Synonyms: | 5-bromo-2-(5-bromo-4-chloro-1,3-dihydro-3-oxo-2H-indol-2-ylidene)-4-chloro-1,2-dihydro-3H-indol-3-one;4,4'-Dichloro-5,5'-dibromo-Δ2,2'-biindoline-3,3'-dione;5,5'-Dibromo-4,4'-dichloro-Δ2,2'(3H,3'H)-bi[1H-indole]-3,3'-dione;BASF Brilliant Indigo 4G-D;BASF Brilliant Indigo 4G-N;C.I.73045;C.I.Vat Blue 2;5-bromo-2-(5-bromo-4-chloro-3-oxo-1H-indol-2-ylidene)-4-chloro-1H-indol-3-one | | CAS: | 29245-44-1 | | MF: | C16H6Br2Cl2N2O2 | | MW: | 488.95 | | EINECS: | 249-533-2 | | Product Categories: | | | Mol File: | 29245-44-1.mol |  |
| | 5-bromo-2-(5-bromo-4-chloro-1,3-dihydro-3-oxo-2H-indol-2-ylidene)-4-chloro-1,2-dihydro-3H-indol-3-one Chemical Properties |
| Boiling point | 556.3±50.0 °C(Predicted) | | density | 2.026±0.06 g/cm3(Predicted) | | pka | -6.23±0.20(Predicted) |
| | 5-bromo-2-(5-bromo-4-chloro-1,3-dihydro-3-oxo-2H-indol-2-ylidene)-4-chloro-1,2-dihydro-3H-indol-3-one Usage And Synthesis |
| Preparation | (a) in the Chloroacetic acid or methyl bromide in sulfate Janson 3H-indol-3-one,2-(1,3-dihydro-3-oxo-2H-indol-2-ylidene)-1,2-dihydro- (namely VAT dye C.I. 73025) [FIAT 764 and 1313], or in the cold sulfuric acid in?3H-indol-3-one,2-(1,3-dihydro-3-oxo-2H-indol-2-ylidene)-1,2-dihydro- (GP 23496 l); (b) 3-Bromo-6-(carboxymethylamino)-2-chlorobenzoic acid?and Sodium methanolate reaction, product with Potassium hydroxide treatment, and air oxidation (USP 957683). Note: C.I. 73025 chemical structure as above. | | Properties and Applications | green light blue. Soluble in Xylene is blue. In concentrated sulfuric acid to green light blue, dilution after blue floc precipitation; In the basic insurance powder solution for yellow brown; In the acidic insurance powder solution for colorless.
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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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4-5
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3
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3-4
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3
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2-3
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| | 5-bromo-2-(5-bromo-4-chloro-1,3-dihydro-3-oxo-2H-indol-2-ylidene)-4-chloro-1,2-dihydro-3H-indol-3-one Preparation Products And Raw materials |
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