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for Ethyl Acetate/Acetic acid [3] P = 740 mmHg BP Temp. °C % by mole C 4 H 8 O 2; ... J H-H (in ethyl), 7.1 Hz. MS; Masses of main fragments 88.0 (5.1%), 70.0 (9.9% ...
Ethyl acetate (systematically ethyl ethanoate, commonly abbreviated EtOAc, ETAC or EA) is the organic compound with the formula CH 3 CO 2 CH 2 CH 3, simplified to C 4 H 8 O 2.This flammable, colorless liquid has a characteristic sweet smell (similar to pear drops) and is used in glues, nail polish removers, and the decaffeination process of tea and coffee.
The CH 2 peak will be split into a doublet by the CH peak—with one peak at 1 ppm + 3.5 Hz and one at 1 ppm − 3.5 Hz (total splitting or coupling constant is 7 Hz). In consequence the CH peak at 2.5 ppm will be split twice by each proton from the CH 2. The first proton will split the peak into two equal intensities and will go from one peak ...
A molecular vibration is a periodic motion of the atoms of a molecule relative to each other, such that the center of mass of the molecule remains unchanged. The typical vibrational frequencies range from less than 10 13 Hz to approximately 10 14 Hz, corresponding to wavenumbers of approximately 300 to 3000 cm −1 and wavelengths of approximately 30 to 3 μm.
ethyl acetate: C 4 H 8 O 2: 77.11°C 6.02 0.902 g/cm 3: 1.88 reacts with strong bases hexamethylphosphoramide [(CH 3) 2 N] 3 PO 232.5 °C 29.6 1.03 g/cm 3: 5.38 high boiling point, high toxicity pyridine: C 5 H 5 N 115 °C 13.3 0.982 g/cm 3: 2.22 reacts with protic and Lewis acids sulfolane: C 4 H 8 SO 2: 286 °C 43.3 1.27 g/cm 3: 4.8 high ...
1 hertz (Hz) 1 to 1.66 Hz: Approximate frequency of an adult human's resting heart beat: 1 Hz: 60 bpm, common tempo in music 2 Hz: 120 bpm, common tempo in music ~7.83 Hz: Fundamental frequency of the Schumann resonances: 10 1: 10 hertz 10 Hz: Cyclic rate of a typical automobile engine at idle (equivalent to 600 rpm) 12 Hz
The SI unit of radiant exitance is the watt per square metre (W/m 2), while that of spectral exitance in frequency is the watt per square metre per hertz (W·m −2 ·Hz −1) and that of spectral exitance in wavelength is the watt per square metre per metre (W·m −3)—commonly the watt per square metre per nanometre (W·m −2 ·nm −1).
Crystal oscillators can be manufactured for oscillation over a wide range of frequencies, from a few kilohertz up to several hundred megahertz.Many applications call for a crystal oscillator frequency conveniently related to some other desired frequency, so hundreds of standard crystal frequencies are made in large quantities and stocked by electronics distributors.