ISO 731-2:1977
Formic acid for industrial use; Methods of test; Part II : Determination of total acidity; Titrimetric method

Standard No.

ISO 731-2:1977

Release Date

1977

Published By

International Organization for Standardization (ISO)

Status

Withdraw 2002-05

Latest

ISO 731-2:1977

Scope

The principle consists in a titration of a test portion with a standard volumetric sodium hydroxide solution, using phenolphthalein as indicator. ISO/R 731 has been subdivised into seven parts. ISO 731/2 replaces clause 3 of ISO Recommendation R 731-1968.

ISO 731-2:1977 history

• 1977 ISO 731-2:1977 Formic acid for industrial use; Methods of test; Part II : Determination of total acidity; Titrimetric method