C.I.Vat Blue 35

Base Information

• Chemical Name: C.I.Vat Blue 35
• CAS No.: 84-40-2
• Molecular Formula: C16H8 Br2 N2 O2
• Molecular Weight: 420.06
• Hs Code.: 2933990090
• Mol file: 84-40-2.mol

Synonyms:Indigotin,5,5'-dibromo- (6CI); [D2,2'-Biindoline]-3,3'-dione, 5,5'-dibromo- (7CI,8CI); 5,5'-Bromoindigo;5,5'-Dibromoindigo; Brilliant Indigo BRD; Brilliant Indigo KMR; C.I. 73060;C.I. Vat Blue 35; Dibromoindigo; Hostavat Navy 2R; Hostavat Navy BR; HostavatNavy R; Midland Vat Blue R; Midland Vat Blue RG; Mitsui Tsuya Indigo BR;Pharmanthrene Blue R

Chemical Property of C.I.Vat Blue 35

Chemical Property:

• Melting Point: >300 °C
• Boiling Point: 492.0±45.0 °C(Predicted)
• PKA: -5.01±0.20(Predicted)
• Flash Point: 251.3oC
• PSA: 58.20000
• Density: 1.932±0.06 g/cm3(Predicted)
• LogP: 4.61580

Purity/Quality:

99%, ^*data from raw suppliers

5,5'-DIBROMOINDIGO 95.00% ^*data from reagent suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

Technology Process of C.I.Vat Blue 35

There total 25 articles about C.I.Vat Blue 35 which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 67.0%

5-bromo-3-indoxyl acetate (17357-14-1) → 5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione (84-40-2)

Guidance literature:

With sodium hydroxide; In ethanol; water; at 20 ℃; for 2h;

DOI:10.1039/c4tc01563k

Reference yield: 56.0%

nitromethane (75-52-5) + 5-bromo-2-nitrobenzaldehyde (20357-20-4) → 5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione (84-40-2)

Guidance literature:

nitromethane; 5-bromo-2-nitrobenzaldehyde; With sodium methylate; In methanol;

With sodium sulfate; sodium hydroxide; In water;

DOI:10.1039/c4tc00550c

Reference yield:

hydrogen bromide (10035-10-6,12258-64-9) + 1H,1H'-2,2'-Biindolylidene-3,3'-dione (482-89-3,12626-73-2) → 5,7-Dibromoisatin (6374-91-0) + 2,4,6-tribromoaniline (147-82-0) + 5-Bromo-1H-indole-2,3-dione (87-48-9) + (E)-5,5′-dibromo-[2,2′-biindolinylidene]-3,3'-dione (84-40-2)

Guidance literature:

Electrolysis;

DOI:10.1002/hlca.19310140163

upstream raw materials:

5-bromo-2-<(carboxymethyl)amino>-benzoic acid

1-(2-amino-5-bromophenyl)ethanone

5-bromo-2-nitrobenzaldehyde

acetone

Downstream raw materials:

5-Bromo-2-aminobenzoic acid

Refernces

• 1、 Pitayatanakul, Oratai,Iijima, Kodai,Ashizawa, Minoru,Kawamoto, Tadashi,Matsumoto, Hidetoshi,Mori, Takehiko. "An iodine effect in ambipolar organic field-effect transistors based on indigo derivatives". . p. 8612 - 8617. Retrieved 2015/08/24.
• 2、 Klimovich,Leshanskaya,Troyanov,Anokhin,Novikov,Piryazev,Ivanov,Dremova,Troshin. "Design of indigo derivatives as environment-friendly organic semiconductors for sustainable organic electronics". . p. 7621 - 7631. Retrieved 2014/12/10.