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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 ISO 910:1977

Publication date:   Nov 1, 1977

General information

90.93   Standard confirmed   Feb 14, 2025

ISO

ISO/TC 47 Chemistry

International Standard

71.060.30   Acids

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Published

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Scope

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.

Life cycle

NOW

PUBLISHED
ISO 910:1977
90.93 Standard confirmed
Feb 14, 2025




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