Vat Blue 4B
- Product Name
- Vat Blue 4B
- CAS No.
- 2475-31-2
- Chemical Name
- Vat Blue 4B
- Synonyms
- 04BS;indigo4b;vatblue5;CI 73065;Indigo 4B;vatblue4b;CIBA BLUE;Bromindigo;tinablue2b;Vat Blue 5
- CBNumber
- CB1364318
- Molecular Formula
- C16H6Br4N2O2
- Formula Weight
- 577.85
- MOL File
- 2475-31-2.mol
Vat Blue 4B Property
- Boiling point:
- 563.4±50.0 °C(Predicted)
- Density
- 2.5583 (rough estimate)
- refractive index
- 1.6300 (estimate)
- Colour Index
- 73065
- pka
- -7.15±0.20(Predicted)
- CAS DataBase Reference
- 2475-31-2(CAS DataBase Reference)
- NIST Chemistry Reference
- c.i. Vat blue 5(2475-31-2)
- EPA Substance Registry System
- 3H-Indol-3-one, 5,7-dibromo-2-(5,7-dibromo-1,3-dihydro-3-oxo-2H-indol-2-ylidene)-1,2-dihydro- (2475-31-2)
Safety
- RTECS
- NM3259100
N-Bromosuccinimide Price
- Product number
- C535730
- Product name
- CibaBlue2B
- Packaging
- 250mg
- Price
- $85
- Updated
- 2021/12/16
- Product number
- C535730
- Product name
- CibaBlue2B
- Packaging
- 500mg
- Price
- $150
- Updated
- 2021/12/16
- Product number
- DYE0000193
- Product name
- CIBA BLUE 2B
- Purity
- 95.00%
- Packaging
- 25G
- Price
- $162.75
- Updated
- 2021/12/16
- Product number
- MT-06742
- Product name
- Cibablue2B
- Purity
- 98%
- Packaging
- 500g
- Price
- $312
- Updated
- 2021/12/16
Vat Blue 4B Chemical Properties,Usage,Production
Uses
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.
Preparation
(a) and Acetic anhydride in the presence of Sodium acetate trihydrate in Acetic acid glacial will 3H-indol-3-one,2-(1,3-dihydro-3-oxo-2H-indol-2-ylidene)-1,2-dihydro-? ?tetrabromide?(FIAT764); (b) in the boiling Nitrobenzene with Bromine will 3H-indol-3-one,2-(1,3-dihydro-3-oxo-2H-indol-2-ylidene)-1,2-dihydro- four bromination, (C) 3H-indol-3-one,2-(1,3-dihydro-3-oxo-2H-indol-2-ylidene)-1,2-dihydro- in Chlorosulfonic acid (GP 225227) or in Sulfuryl chloride (GP 229304) and bromine reaction.
Properties and Applications
blue. Dark blue powder. Etanol and insoluble in water, soluble in Xylene, Nitrobenzene and 1, 2, 3, 4 – Tetrahydronaphthalene. Alkaline reduction leuco for yellow; Acid reduction leuco for pale yellow. In concentrated sulfuric acid to blue light green, diluted into blue, and the emergence of precipitation. Used for cotton of jig dyeing and yarn dyeing, dyeing hair blue cloth color turquoise blue. Is the important dye printing, can direct printing, also can discharge printing and resist printing. Can also be used for viscose, silk and wool dyeing, levelness and affinity are good. Can be processed into organic pigment
| Standard | Ironing Fastness | Chlorine bleach | Light Fastness | Mercerized | Oxygen bleach | Soaping | |
| Fading | Stain | ||||||
| ISO | 5 | 2 | 4-5 | 4 | 3-4 | 4-5 | 5 |
| AATCC | 5 | 2 | 4-5 | 3-4 | 4 | ||
Vat Blue 4B Suppliers
View Lastest Price from Vat Blue 4B manufacturers
- Product
- Vat Blue 4B 2475-31-2
- Price
- US $200.00-95.00/kg
- Min. Order
- 1kg
- Purity
- 99%
- Supply Ability
- 20ton
- Release date
- 2024-04-22
- Product
- Vat Blue 4B 2475-31-2
- Price
- US $20.00-10.00/kg
- Min. Order
- 1kg
- Purity
- 0.99
- Supply Ability
- 10 tons
- Release date
- 2023-10-19
- Product
- Vat Blue 4B 2475-31-2
- Price
- US $0.00/KG
- Min. Order
- 1KG
- Purity
- 99%
- Supply Ability
- 50000KG/month
- Release date
- 2023-10-10