ISO 1389-6:1977

Phthalic anhydride for industrial use — Methods of test — Part 6: Determination of phthalic anhydride content — Titrimetric method

The principle consists in the dissolution of a test portion in an excess of standard volumetric sodium hydroxide solution and back-titration of the excess with a standard volumetric hydrochloric acid solution using phenolphthalein as indicator. - ISO 1389, Parts 1 to 11, replace ISO Recommendation R 1389-1970.

OEN:

ISO

Langue:

English

Code(s) de l'ICS:

71.080.50

Statut:

Annulée

Date de Publication:

1977-01-31

Numéro Standard:

ISO 1389-6:1977