In 2 O 3 nanopaticles were synthesized by glycine-nitrate combustion method. The synthesized In 2 O 3 is characterized by the powder X-ray diffraction and transmission electron microscopy. The average crystallite size, as determined by Scherrer's formula, was found to be about 48 nm. A catalytic amount of In 2 O 3 nanopaticles, were used for an efficient synthesis of amidoalkyl naphthols via multicomponent condensation of aryl aldehydes, β-naphthol, and urea or acetamide. In 2 O 3 nanopaticles were found to be highly active for the transformation with excellent yield and purity of the product in a short reaction time.

Viscose rayon fibres have been spun with a range of volume swelling values from 60 to 150%, and their dyeing properties investigated. The dyeing was done with Sky Blue FF, and the results have been correlated with the calculated values derived from Marshall and Peters' equations18.