Projects

Maleic anhydride, for industrial use - Technical requirements

90.60   Close of review

Maleic anhydride for industrial use - Determination of crystallizing point

90.92   Standard to be revised

Phthalic anhydride for industrial use - Determination of crystallizing point

90.92   Standard to be revised

Phthalic anhydride for industrial use - Determination of free acidity - Volumetric method

90.92   Standard to be revised

Phthalic anhydride for industrial use - Determination of maleic anhydride content - Volumetric method

90.92   Standard to be revised

Phthalic anhydride for industrial use - Determination of maleic, citraconic, benzoic and o-toluic acid content - Gas chromatographic method

90.92   Standard to be revised

Phthalic anhydride for industrial use - Determination of 1,4-naphthoquinon and phthalide content - Gas chromatographic method

90.92   Standard to be revised

Phthalic anhydride for industrial use - Determination of benzoic, o-toluic and p-toluic acids and phthalide content - Gas chromatographic method

90.92   Standard to be revised

Maleic anhydride for industrial use - Determination of maleic anhydride content - Potentiometric method

90.92   Standard to be revised

Maleic anhydride for industrial use - Determination of benzoic and o-toluic acid and citraconic and phthalic anhydride contents - Gas chromatographic method

90.92   Standard to be revised