Fast Light Yellow

Fadory management, 369 ff. Fast light yellow G, 129, 265 Fastness to light, determination, 411... 

Technical Observations. Phenylmethylpyrazolonesulfonic acid is used, for example, in the preparation of fast light yellow G (page 265). Phenylmethylpyra-zolone itself (from phenylhydrazine and acetoacetic ester) and maiw of its derivatives are valuable components for the preparation of yellow azo eyes which, for the most part, are characterized by very high stability. 

Fast Light Yellow BG Flavazine Kiton Yellow S Xylene Light Yellow 2GL... 

Indian yellow, fast yellow, azo flavine, brilliant yellow S, curcumine, orange II, palatine light yellow, wool fast yellow, azo acid yellow, azo yellow, etc. ° Solution becomes red or orange red. 

The halogenolysis of diorganoditellurides is very fast and the organotellurium trihalides precipitate immediately, usually as light yellow solids in the case of the chlorides, as yellow solids in the case of the bromides, and as red-brown solids in the case of iodides. Some trihalides, specially the aliphatic derivatives, precipitate as dense oils, which crystallize by addition of appropriate solvents. 

SYNS ACETAMIDE, N-(4-((2-HYDROXY-5-METHYL-PHENYL)AZO)PHENYL)- 4-ACETAM1DO-2-HYDRO-XY-5 -METHYLAZOBENZENE ACETATE FAST YELLOW G ACETOQUINONE LIGHT YELLOW ACETOQLTNONE UGHT YELLOW 4JLZ ALTCO SPERSE FAST YELLOW GFN NEW D AMACEL YELLOW G ARTISIL DIRECT YELLOW G ARTISIL YELLOW G ARTISIL YELLOW 2GN CALCOSYN YELLOW GC... 

ESTEROQUINONE LIGHT YELLOW 4JL ESTONE YELLOW GN FENACET FAST YELLOW G ... 

The application of canarine depends on its property of dyeing cotton yellow from an alkaline solution. The shades vary from light yellow to orange-yellow, according to the concentration of the solution. They are very fast both to soap and light. In comparison with other artificial dyestuffs, canarine only possesses weak tinctorial properties. 

Acetoquinone light yellow Cl 11855 Cl disperse yellow 3 Cl solvent yellow 77 Disperse fast yellow G Disperse yellow Z... 

SPF fibres are usually light yellow in colour. They are stable with both hydrogen peroxide and reduction bleaching. A whitening or brightening treatment may be necessary for purer whiteness (Fig. 13.7). When bleaching an SPF blended with another fibre, care must be taken to use a method suitable for both fibres. Either acid or reactive dyes may be used dye fastness compares well with that of silk. ... 

The authors found that, under mild conditions, the reaction proceeds with simple aliphatic olefins, selectively and reversibly, to form 1 1 adducts. Upon reaction with olefins, the deep purple solution turns light yellow. The 1 1 adducts are formed when an olefin is in the oxidized form, and the bound olefin is released when it is reduced. Fast on-off switching from the higher to lower oxidation state by electrochemical control allows binding and then release of the olefin, thus enabling olefin separation from other components and its purification. The purification makes use of the rapid binding of an olefin by the electrochemically generated neutral dithiole species and the subsequent release of the olefin upon electrochemical reduction of the adduct. In this way, reversible olefin complexation to dithiolene complexes offers a novel approach to olefin separation and purification. 

Dye for polyacrvlonilrilc liber light and wet fast yellow shade... 

---