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sklademVydáno: 1973-02-01
ISO 981:1973
ISO 981:1973 - Sodium hydroxide for industrial use — Determination of chloride content — Mercurimetric method
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| Označení normy: | ISO 981:1973 |
| Vydání: | 1 |
| Vydáno: | 1973-02-01 |
| Počet stran (Anglicky): | 2 |
| Počet stran (Francouzsky): | 2 |
DESCRIPTION
ISO 981:1973
The method is applicable to products of which the chloride content is greater than 0.005 % (m/m). The procedure based on titration of the chloride ions with mercury(II) nitrate in the presence of diphenylcarbazone as indicator. - Replaces ISO Recommendation R 981-1969.