ISO 731-2:1977

Formic acid for industrial use — Methods of test — Part 2: Determination of total acidity — Titrimetric method

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.

OEN:

ISO

Langue:

English

Code(s) de l'ICS:

71.080.40

Statut:

Annulée

Date de Publication:

1977-01-31

Numéro Standard:

ISO 731-2:1977