Semi-micro dosages gravimétrique et volumétrique de la silice |
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Authors: | Clément Duval |
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Institution: | Laboratoire de Chimie B sorbonne, ParisFrance |
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Abstract: | The author furnishes results checked by three years of practice, concerning the measurment of traces of silica.This is transformed into a complex silicomolybdate by means of hexamethylenetetramine Treated with special in precautions the Precipitate yields a residue of SiO2 + 12MoO3 ,weighing about tlurty times more than the starting silica.Since the titration of the hexamethylenetetramine used can be done by means of iodine, we have here a means of titrating the silica used after destroying hydrolytically the preipitaite of silicomolybdateThese methods have so far been applied only to solutions containing free silica or alkilisilicates. |
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