| 1. | Chemical analysis of phthalic anhydride . determination of 1 . 4 - napthaquinone
酞酐的化学分析.荼醌的测定 |
| 2. | Chemical analysis of maleic and phthalic anhydrides . determination of ash
马来酐和酞酐的化学分析.灰分测定 |
| 3. | Chemical analysis of phthalic anhydride . measurement of coloration hazen scale
酞酐的化学分析.染色度的测量 |
| 4. | Chemical analysis of phthalic anhydride . polarographic determination of maleic anhydride
酞酐的化学分析.马来酸酐含量的极谱法测定 |
| 5. | Chemical analysis of maleic and phthalic anhydrides . potentiometric determination of free acidity
马来酐和酞酐的化学分析.游离酸度的电位测定 |
| 6. | Chemical analysis of phthalic anhydride . determination of impurities oxidizable in the cold by potassium permanganate
酞酐的化学分析.用高锰酸钾测定低温氧化杂质的含量 |
| 7. | Chemical analysis of maleic and phtahlic anhydrides . estimate of concentration by determination of total acidity with phthenolphthalein
马来酐和酞酐的化学分析.用测定酚酞总酸度法评估浓度 |
| 8. | Chemical analysis of maleic and phthalic anhydrides . determination of iron by the method of standard nf t 20 - 613 preparation of test sample
马来酐和酞酐的化学分析.用nf t20 - 613方法测定铁含量 |
