سنتز رنگهاي دي آزو با استفاده از منيزيم هيدروژن سولفات و سيليكاژل مرطوب و كاربرد آنها در رنگرزي الياف مصنوعي

For synthesis of some diazo dyes base on a- naphthol and Beta- naphthol were required special conditions like low temperature and using liquid acids; therefore in addition to spent high expense, also this matter its case of reactor amortization. With using of solid acid we could synthesize in good yield some diazo dyes at room temperature, in addition this matter decrease reactor amortization and environmental pollution. Here for formation of diazonium salt of some aromatic amines we used Magnesium Hydrogen Sulfate and continuing reaction with a- naphthol and Beta- naphthol for azo coupling. Diazo dyes at room temperature and in good yield were formed at the short time. For more knowledge of molecular structure of the synthesized dyes H-NMR and FT-IR and C-NMR tests were applied. For examine of application these dyes in textile industry, dyeing process and some tests were applied on these dyes like light fastness, washing fastness and staining test.