application on nylon 6 and wool

The synthesis of the dye o,o'-dihydroxyazo-HMFAN and its chromium and cobalt complexes, is described. These dyes have been applied to nylon 6 and wool fabrics. Dye exhaustion has been calculated according to the absorbances of the original and residual dyes in the dyebath. The fastness to light, washing and rubbing of the dyed fabrics have been measured. The spectral characterisation of these dyes is investigated by IR and UV/Vis spectroscopic techniques and thin-layer chromatography

application on nylon 6 and wool

The synthesis of the dye o,o'-dihydroxyazo-HMFAN and its chromium and cobalt complexes, is described. These dyes have been applied to nylon 6 and wool fabrics. Dye exhaustion has been calculated according to the absorbances of the original and residual dyes in the dyebath. The fastness to light, washing and rubbing of the dyed fabrics have been measured. The spectral characterisation of these dyes is investigated by IR and UV/Vis spectroscopic techniques and thin-layer chromatography

Dimethyl 5-(3,4-dicyano-phenoxy)isophthalate

The crystal structure of the title compound, C18H12N2O5, is stabilized by inter-molecular C-HcO and pi-pi inter-actions

Structure of 5-allyl-2-hydroxy-3-methoxyazobenzene

5-allyl-2-hydroxy-3-methoxyazobenzene was prepared by the reaction of 4-allyl-2-methoxyfenol and benzenediazoniumchloride and crystallized from dimethylsulphoxide to yield crystals suitable for analysis. The molecular structure was identified by UV-VIS, IR, H-1-NMR, C-13-NMR and elemental analysis. The crystal structure of the title compound was determined as monoclinic by by single crystal X-Ray diffraction technique. The crystal parameters of this compound are as follows: monoclinic P 2 1/n, a=5.559(2) Angstrom, b=14.900(2) Angstrom, c=17.573(29) Angstrom, beta=98.58(1)degrees, V=1439.3(2) Angstrom(3), Z=2, Dx=0.610 g/cm(3), F(000)=284, lambda (MoK alpha)=0.71070 Angstrom, mu=0.041 mm(-1). The structure was solved by SHELXS-86 and refined by SHELXL-93. R=0.09 for 1107 observed reflections with I>2 sigma(I)