To2.000ginanacetylationflaskfittedwithanaircondenser, Drying:inair. add10.0mLoffreshlypreparedaceticanhydridesolutionR1 andheatwithfrequentshakinginawater-bathfor45min.CoolDetection:exposetoiodinevapouruntilthespotsappear andcarefullyadd10mLofwaterR.Heatforafurther2min.andexamineindaylight. ...
abegins boiling again and the vapors condense in the condenser and flow to[translate] apyridine and acetic anhydride. The phenylacetone remains behind in the[translate] ais called simple distillation. Distillation continues until 1300 ml has[translate]...
The tissue sections were then washed with PBS, incubated with 0.2 N HCl for 10 min and 0.25% acetic anhydride/1 mol/l trietha- nolamine for 10 min, and dehydrated with graded ethanols. Hybridizations were carried out with single-stranded 35S-radiolabeled (5 Â 107 c.p.m./ml) cRNA ...
1.25 g/mL(lit.);3.1 (vs air) 沸点 290 °C 熔点 20 °C(lit.) 闪点 320 °F 折射率 n;20/D;1.474(lit.) 稳定性 Stable. Incompatible with perchloric acid, lead oxide, acetic anhydride, nitrobenzene, chlorine, peroxides, strong acids, strong bases. Combustible. ...
1.25 g/mL(lit.);3.1 (vs air) 沸点 290 °C 熔点 20 °C(lit.) 闪点 320 °F 折射率 n;20/D;1.474(lit.) 稳定性 Stable. Incompatible with perchloric acid, lead oxide, acetic anhydride, nitrobenzene, chlorine, peroxides, strong acids, strong bases. Combustible. ...
1.25 g/mL(lit.);3.1 (vs air) 沸点 290 °C 熔点 20 °C(lit.) 闪点 320 °F 折射率 n;20/D;1.474(lit.) 稳定性 Stable. Incompatible with perchloric acid, lead oxide, acetic anhydride, nitrobenzene, chlorine, peroxides, strong acids, strong bases. Combustible. ...
1.25 g/mL(lit.);3.1 (vs air) 沸点 290 °C 熔点 20 °C(lit.) 闪点 320 °F 折射率 n;20/D;1.474(lit.) 稳定性 Stable. Incompatible with perchloric acid, lead oxide, acetic anhydride, nitrobenzene, chlorine, peroxides, strong acids, strong bases. Combustible. ...
1.25 g/mL(lit.);3.1 (vs air) 沸点 290 °C 熔点 20 °C(lit.) 闪点 320 °F 折射率 n;20/D;1.474(lit.) 稳定性 Stable. Incompatible with perchloric acid, lead oxide, acetic anhydride, nitrobenzene, chlorine, peroxides, strong acids, strong bases. Combustible. ...
1.25 g/mL(lit.);3.1 (vs air) 沸点 290 °C 熔点 20 °C(lit.) 闪点 320 °F 折射率 n;20/D;1.474(lit.) 稳定性 Stable. Incompatible with perchloric acid, lead oxide, acetic anhydride, nitrobenzene, chlorine, peroxides, strong acids, strong bases. Combustible. ...
16.2 g of the aforementioned dextrin of Example 2 of GB 2,154,469 in dimethylformamide (150 mL) was stirred and heated until dissolved, then cooled to ambient temperature. Acetic anhydride (23 mL, 0.24 mole) was added slowly with stirring. A transient precipitation occurred and when this had...