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ISO 2761:1975 PDF
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Crude sodium borates for industrial use — Determination of total titanium content — Photometric method
Applicable to products having contents up to 0.1 % (m/m). The method specified is not applicable in the presence of vanadium or high silica content. Molybdenum and chromium also interfere. The analysis bases on fusion of a test portion with sodium corbonate, extraction of the cooled melt with suphuric acid and the addition of hydrogen peroxide. Photometric measurement of the yellow coloured complex formed at a wavelength of about 420 nm.
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| Edition | 1975 |
|---|---|
| Published Date | 1975 |
| Published By | International Standardization Organisation |
| Page Count | 2 |
