ISO 910:1977

Sulphuric acid and oleum for industrial use — Determination of total acidity, and calculation of free sulphur trioxide content of oleum — Titrimetric method

Two cases are considered: sulphuric acid contents equal to or lower than 98 % (m/m) and sulphuric acid contents higher than 98 % (m/m). The principle is based on oxidation of a test portion with hydrogen peroxide and titration of the total acidity with a standard volumetric sodium hydroxide solution, in the presence of methyl red as indicator. - Replaces ISO Recommendation R 910-1968.

OEN:

ISO

Langue:

English

Code(s) de l'ICS:

71.060.30

Statut:

Publié

Date de Publication:

1977-10-31

Numéro Standard:

ISO 910:1977