Phthalic anhydride for industrial use — Methods of test — Part 6: Determination of phthalic anhydrid...
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.
Phthalic anhydride for industrial use — Methods of test — Part 7: Determination of maleic anhydride ...
The principle consists in the dissolution of a test portion in acetone, removal of 1,4-naphthoquinone present in the solution by extraction with benzene. Polarographic measurement of the aqueous solution and determination of the mass of maleic anhydride by means of the calibration graph. - ISO 1389, Parts 1 to 11, replace ISO Recommendation R 1389-1970.
Phthalic anhydride for industrial use — Methods of test — Part 10: Determination of 1,4- naphthaquin...
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.
Phthalate esters for industrial use — Methods of test — Part 1: General
The document also specifies the methods to be used for the following tests: measurements of colour; determination of density at 20 °C; determination of water content; determination of iodine value (applicable to diallyl phthalate only); determination of refractive index; determination of flash point; determination of viscosity (not applicable to diallyl phthalate). - ISO 1385, Part 1 to Part 5…
Phthalate esters for industrial use — Methods of test — Part 5: Determination of ester content — Tit...
The principle consists in the saponification of ester in a test portion, using a measured excess of potassium hydroxide ethanolic solution, followed by back-titration with standard volumetric hydrochloric acid solution in the presence of phenolphthalein as indicator. - ISO 1385, Part 1 to Part 5 replace ISO Recommendation R 1385-1970
