Reference number
ISO 5935:1984
ISO 5935:1984
Crude sodium borates for industrial use — Determination of total and alkali-soluble silica contents — Molybdosilicate spectrometric method
Edition 1
1984-06
Retirada
ISO 5935:1984
12129
Retirada (Edición 1, 1984)

Resumen

Specifies a method using test solutions to be prepared by fusion of a test portion with sodium carbonate for the determination of the total silica content, and by dissolution of the alkalisoluble part of a test portion in sodium hydroxide solution for the determination of the alkali-soluble silica content. This results in the formation of molybdosilicate, followed by spectrometric measurement at a wavelength of about 400 nm. Applies to products having total silica contents in the range 0,4 to 4,0 % (m/m) and alkali-soluble silica contents in the range 0,01 to 0,05 % (m/m).

Informaciones generales

  •  : Retirada
     : 1984-06
    : Retirada de la Norma Internacional [95.99]
  •  : 1
     : 4
  • ISO/TC 47
    71.060.50 
  • RSS actualizaciones

¿Tiene alguna duda?

Consulte nuestras Ayuda y asistencia