ISO 352:1981
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
Solid mineral fuels Determination of chlorine High temperature combustion method
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25-02-2019
English, French
01-04-1981
The sample is burnt in a stream of oxygen, in a tube furnace at a temperature of 1250 or 1350 C, and the acid gases (chlorine and oxides of sulphur) formed are absorbed in hydrogen peroxide. The acid solution is neutralized with sodium tetraborate and the sodium chlorine formed is converted by reaction with mercury(II) oxycyanide to sodium hydroxide which is determined volumetrically.
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