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Specification:
Item | High class | First class | Qualified |
Appearance | Colorless to pale yellow transparent liquid | ||
Content, % ≥ | 99.9 | 99.5 | 99.0 |
Moisture, % ≤ | 0.005 | 0.03 | 0.1 |
Evaporation residue, % ≤ | 0.01 | 0.01 | 0.02 |
Dimethyl ether, % ≤ | 0.01 | 0.01 | 0.02 |
Methanol, % ≤ | 0.015 | 0.015 | 0.03 |
Other impurities, % ≤ | 0.06 | 0.06 | 0.1 |
Transparency, NTU ＜ | 1 | 1 | - |
Acidity | - | Qualified | - |
Petroleum ether dissolution test | - | Qualified | - |
Density, 20℃, g/mL | 2.270-2.286 | ||
Specification:
Item | High class | First class | Qualified |
Appearance | Colorless to pale yellow transparent liquid | ||
Content, % ≥ | 99.9 | 99.5 | 99.0 |
Moisture, % ≤ | 0.005 | 0.03 | 0.1 |
Evaporation residue, % ≤ | 0.01 | 0.01 | 0.02 |
Dimethyl ether, % ≤ | 0.01 | 0.01 | 0.02 |
Methanol, % ≤ | 0.015 | 0.015 | 0.03 |
Other impurities, % ≤ | 0.06 | 0.06 | 0.1 |
Transparency, NTU ＜ | 1 | 1 | - |
Acidity | - | Qualified | - |
Petroleum ether dissolution test | - | Qualified | - |
Density, 20℃, g/mL | 2.270-2.286 | ||
