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ISO 1232:1976

Aluminium oxide primarily used for the production of aluminium — Determination of silica content — Reduced molybdosilicate spectrophotometric method
1. 9. 1976.
95.99   Povučen   4. 2. 2016.

Опште информације

95.99     4. 2. 2016.

ISO

ISO/TC 226

Međunarodni standard

71.100.10  

francuski   engleski  

Kupovina

Povučen

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Apstrakt

The method is applicable to products having a silica content between 0.005 % (m/m) and 0.025 % (m/m) provided that the content of phosphorus pentoxide plus vanadium pentoxide does not exceed 0.02 % (m/m). The principle of the method is based on the formation of oxidized molybdosilicate (yellow) under well-defined conditions of acidity, concentration of reagents, temperature and time. Selective reduction of the complex in a highly acidic medium of sulphuric acid and in the presence of tartaric acid. Spectrophotometric measurement of the reduced coloured complex at a wavelength of about 815 nm. - Replaces ISO Recommendation R 1232-1970.

Životni ciklus

TRENUTNO

POVUČEN
ISO 1232:1976
95.99 Povučen
4. 2. 2016.

Nacionalna preuzimanja

SRPS H.B8.604:1979  
ISS

Ispitivanje tehničkog aluminijum-oksida - Određivanje sadržaja silicijuma - Spektrofotometrijska metoda

95.99   Povučen

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