ISO 1389-10:1977

Phthalic anhydride for industrial use — Methods of test — Part 10: Determination of 1,4- naphthaquinone content — Colorimetric method

The principle consists in the development of a pink colour by heating a test portion containing 1,4-naphtoquinone with tin(II) chloride, and comparison of the colour produced with a series of prepared reference colours. - 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 1389-10:1977