This International Standard specifies a titrimetric method for the determination of carbonates in sodium hydroxide for industrial use. The method is applicable to products whose carbonate content, expressed as C02, is greater than 0.01% (m/m). Three cases, designated by a preliminary test, are planned: 1.1 Sodium hydroxide not containing sulphide or chlorate. 1.2 Sodium hydroxide containing sulphides. 1.3 Sodium hydroxide containing chlorates.
NBN T 03-130-1980 history
1979NBN T 03-130-1980 Sodium hydroxide for industrial use - Determination of carbonates content -Titrimetric method