Vat Blue 2

Modify Date: 2025-08-26 01:14:16

Vat Blue 2 Structure
Vat Blue 2 structure
Common Name Vat Blue 2
CAS Number 29245-44-1 Molecular Weight 488.94500
Density 2.026g/cm3 Boiling Point 556.3ºC at 760mmHg
Molecular Formula C16H6Br2Cl2N2O2 Melting Point N/A
MSDS N/A Flash Point 290.2ºC

 Use of Vat Blue 2


Vat Blue 2, a indigo (HY-N0335) derivative, is a dark blue 5,5'-dibromo-4,4'-dichloroindigo dye[1].

 Names

Name 5-bromo-2-(5-bromo-4-chloro-3-oxo-1H-indol-2-ylidene)-4-chloro-1H-indol-3-one
Synonym More Synonyms

 Vat Blue 2 Biological Activity

Description Vat Blue 2, a indigo (HY-N0335) derivative, is a dark blue 5,5'-dibromo-4,4'-dichloroindigo dye[1].
Related Catalog
In Vitro Indigo is the parent compound for a series of bromine and chlorine-substituted dyestuffs. Vat Blue 2 has four substituents, two each of chlorine and bromine, but located at different positions[1].
References

[1]. Judy D. Timpa, et al. The Flammability of Cotton Fabrics Dyed with Indigo Dyes.

 Chemical & Physical Properties

Density 2.026g/cm3
Boiling Point 556.3ºC at 760mmHg
Molecular Formula C16H6Br2Cl2N2O2
Molecular Weight 488.94500
Flash Point 290.2ºC
Exact Mass 485.81700
PSA 58.20000
LogP 5.92260
Vapour Pressure 2.05E-12mmHg at 25°C
Index of Refraction 1.74

 Safety Information

HS Code 2933990090

 Synthetic Route

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Vat Blue 2 Structure

Vat Blue 2

CAS#:29245-44-1

Literature: Namuswe, Frances; Goldberg, David P. Chemical Communications, 2006 , # 22 p. 2326 - 2328

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Vat Blue 2 Structure

Vat Blue 2

CAS#:29245-44-1

Literature: Ruan, Chuanmin; Wang, Wei; Gu, Baohua Analytical Chemistry, 2006 , vol. 78, # 10 p. 3379 - 3384

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Vat Blue 2 Structure

Vat Blue 2

CAS#:29245-44-1

Literature: Cotson; Holt Pr.roy.Soc., 1958 , vol. 148, p. 506,513

 Customs

HS Code 2933990090
Summary 2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

 Synonyms

5,5'-Dibromo-4,4'-dichloroindigo
C.I.Vat Blue 2
5,5'-Dibrom-4,4'-dichlor-indigo
4,4'-Dichloro-5,5'-dibromoindigo
BASF Brilliant Indigo 4G
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