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

Publication date: 1 nën 1977

General information

Current stage: 90.93 Effective date: 14 shk 2025

Originator: ISO

Owner: ISO/TC 47

Type: International Standard

ICS: 71.060.30

Gjuha: frëngjisht anglisht

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Statusi: Publikuar

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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
14 shk 2025