Sudan blue

Sudan II (Sudan Blue, Solvent Blue 35, l,4-bis-(butylamino)-9,10-anthraquinone) [17354-14-2] M 350.5, m 122°, Xmax 604, 652nm, pKj st 9.5 (OH). It is formed from quinizarin (2g see [81-64-1]), 33% EtOH/w-BuNH2 (20ml) and Na2S204 (2g) at 140°/8 hours, evaporate, extract with toluene, chromatograph (AI2O3), the intense blue band in toluene is evaporated, and the residue gave purple needles (Cu lustre) from petroleum ether (b 60-80°) (l.lg, 38%) [Peters Walker JC/zewz Soc 1429 1956, Beilstein 14 IV 460], It forms Cu and Ni salts. 

Lymphatic uptake of the lipid soluble dye Sudan blue and Vitamin A acetate from triolein-in-water emulsions requires the presence of both bile salts and phosphatidylcholine [237]. However, the overall contribution of lymphatic uptake for these two solutes is very small. In the absence of sodium taurocholate in rats with bile hstulae the administration of 20 ml polysorbate 80 did not stimulate lymphatic transport, although absorption from a 4 % polysorbate 80 solution is equivalent to that for the triolein emulsions in intact amounts, but slightly more rapid. 

Sorbitan monolaurate, in A-00367 Sudan blue GA, S-00037 Tetrahydroxy-l,4-benzoquinone, T-00072... 

Resorcylaldoxime, in D-00517 y5-Resorcylamide, in D-00531 Solochrome azurine BS, S-00016 Solochrome black PV Na salt, in S-00018 Solochrome fast red Na salt, in S-00020 Solochrome red B, S-00021 Sudan blue GA, S-00037 Sulfarsazen Na salt, in S-00038 Sulfochlorophenol R, S-00044 4-(2-Thiazolylazo)-1,3-benzenediol,... 

Fig. 60 Chromatogram of a 6 dyestuff mixture made up (according to falling Rf values) of Sudan red 7B, Sudan orange G, Sudan black B, Sudan yellow, Artisil blue 2RP and Sudan black B (2 components) under different humidity conditions. From left to right 72, 65, 47, 42, 32,18, 14 and 9% relative humidity layer silica gel 60 mobile phase toluene.

Using quenching agents like Nile Blue and Sudan Black are effective in suppressing AF for confocal or widefield microscopy... 

Lipids Nile blue Sudan black B Sudan IV... 

Fig. 3.174. Example of NACE electropherogram of mixture of dyes (1, Janus Green 2, Brilliant Cresyl Blue 3, Sudan Black 4, Thymolphtalein 5, Phenolphtalein) in acetonitrile. Added ionic liquid was l-butyl-3-methyl fluoroacetate (3.3 mg/ml). Applied voltage +18kV, current 8 pA. Reprinted with permission from M. Vaher et al. [207].

SYNS CERES RED 7B C.I. 26050 C.I. SOLVENT RED 19 N-ETHYL-l-((p-(PHENYLAZO)PHENYL)AZO)-2-NAPHTHALENAMINE N-ETHYL-l-((4-(PHENYL-AZO)PHENYL)AZO)-2-NAPHTHALENAMINE N-ETHYL-l-((4-(PHENYLAZO)PHENYL)AZO)-2-NAPHTH-YLAMINE FAT RED 7B HEXATYPE CARMINE B LACQUER RED V3B OIL VIOLET ORGANOL BORDEAUX B (PHENYLAZO-4-PHENYLAZO)- -ETHYLAMINO-2-NAPHTHALENE l-(4-PHENYLAZO-PHENYLAZO)-2-ETHYLAMINONAPHTHALENE SOLVENT RED 19 SPECIAL BLUE X 2137 SUDAN RED 7B SUDANROT 7B TYPOGEN CARMINE... 

SYNS AAB AMINOAZOBENZENE p-AiMINOAZOBENZENE 4-AMINOAZOBENZENE 4-AMINO-l,l -AZOBENZENE p-AMINOAZOBENZOL 4-AMINOAZOBENZOL p-AMINODIPHENYLIMIDE . NILINE YELLOW 4-BENZENEAZOANILINE BRASILAZINA oil yellow G CERES YELLOW R C.I. 11000 C.I. SOLVENT BLUE 7 C.L SOLVENT YELLOW 1 FAST SPIRIT YELLOW AAB OIL SOLUBLE ANILINE YELLOW OIL YELLOW AAB ORGANOL YELLOW PARAPHENOLAZO ANILINE 4-(PHENYLAZO)ANILINE 4-(PHENYLAZO)BENZEN-AMINE p-PHENYLAZOPHENYLAMINE SOLVENT YELLOW 1 SUDAN YELLOW R USAF EK-1375... 

Two layers are formed on mixing. A few crystals of CUSO4 5 H2O are now added and the mixture stirred well. The flask is closed with a stopper and left to stand for several hours. The supernatant liquid is decanted off, the solution filtered and placed in the measuring cylinder. A few mL of xylene (previously been colored with Sudan III dye) are added. This deep red liquid forms the upper phase below it is the colorless methanol phase and at the bottom the aqueous phase which is colored blue by the copper sulfate. The measuring cylinder is closed with a cork stopper and sealed with paraffin. The mixture remains stable for several years. Prior to each demonstration the liquid is shaken thoroughly the cylinder is placed in front of a white background and the red, white and blue cocktail effect presented. 

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