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.

SDO:

ISO

Language:

English

ICS Codes:

71.080.50

Status:

Withdrawn

Publish date:

1977-01-31

Standard Number:

ISO 1389-10:1977