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Vat Blue 4B

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Vat Blue 4B Suppliers list
Company Name: Hebei Yanxi Chemical Co., Ltd.
Tel: +8618531123677
Email: faithe@yan-xi.com
Products Intro: Product Name:Vat Blue 4B
CAS:2475-31-2
Purity:0.99 Package:1kg;20USD|25kg;15USD|100kg;10USD Remarks:Factory sales
Company Name: Hebei Chuanghai Biotechnology Co., Ltd
Tel: +8615531151365
Email: mina@chuanghaibio.com
Products Intro: Product Name:Vat Blue 4B
CAS:2475-31-2
Purity:99% Package:1KG;0.00;USD|25KG;0.00;USD|1000KG;0.00;USD
Company Name: Henan Tianfu Chemical Co.,Ltd.
Tel: +86-0371-55170693 +86-19937530512
Email: info@tianfuchem.com
Products Intro: Product Name:TIANFU-CHEM CAS:2475-31-2 Vat Blue 4B
CAS:2475-31-2
Purity:99% Package:25KG;5KG;1KG
Company Name: career henan chemical co
Tel: +86-0371-86658258 +8613203830695
Email: factory@coreychem.com
Products Intro: Product Name:Vat Blue 4B
CAS:2475-31-2
Purity:>=99% Package:1.8KG;9.8USD
Company Name: TargetMol Chemicals Inc.
Tel: +1-781-999-5354; +17819995354
Email: marketing@targetmol.com
Products Intro: Product Name:Tetrabromoindigo；NSC-400980;NSC400980;NSC 400980
CAS:2475-31-2
Package:25 mg Remarks:REAGENT;FOR LABORATORY USE ONLY

Vat Blue 4B manufacturers

  • Vat Blue 4B
  • Vat Blue 4B pictures
  • 2025-06-27
  • CAS:2475-31-2
  • Min. Order: 1KG
  • Purity: 99%
  • Supply Ability: 500000kg
  • Vat Blue 4B
  • Vat Blue 4B pictures
  • $20.00
  • 2025-06-20
  • CAS:2475-31-2
  • Min. Order: 1kg
  • Purity: 0.99
  • Supply Ability: 10 tons
  • Vat Blue 4B
  • Vat Blue 4B pictures
  • $9.80
  • 2020-01-10
  • CAS:2475-31-2
  • Min. Order: 1g
  • Purity: ≥99%
  • Supply Ability: 100kg
Vat Blue 4B Basic information
Product Name:Vat Blue 4B
Synonyms:BASF brilliant indigo;Vat blue 5 (C.I. 73065);Pigment organic indigo blue bromindigo EINecs;04BS;Arlanon Blue 2B;Bromo Indigo 2B;Convat Blue E;Kambanthrene bndigo 4B
CAS:2475-31-2
MF:C16H6Br4N2O2
MW:577.85
EINECS:219-598-1
Product Categories:
Mol File:2475-31-2.mol
Vat Blue 4B Structure
Vat Blue 4B Chemical Properties
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)
form solid
InChIInChI=1S/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
InChIKeyPTWYQANXSNMUTI-UHFFFAOYSA-N
SMILESN1C2=C(C=C(Br)C=C2Br)C(=O)C1=C1C(=O)C2=C(N1)C(Br)=CC(Br)=C2
CAS DataBase Reference2475-31-2(CAS DataBase Reference)
NIST Chemistry Referencec.i. Vat blue 5(2475-31-2)
EPA Substance Registry System3H-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 Information
WGK Germany WGK 3
RTECS NM3259100
TSCA TSCA listed
Storage Class11 - Combustible Solids
Hazard ClassificationsAquatic Chronic 4
MSDS Information
Vat Blue 4B Usage And Synthesis
UsesCiba 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 Applicationsblue. 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
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