Changes in boiling point, following the ethanolysis of an ester, give information about the number of ester groups present per molecule, the saponification equivalent, and, in the case of a polymeric ester, the degree of polymerisation. Methods of calculating the results are discussed and ...
forDetermination of the Boiling Range Distribution of Gasolineby Wide-Bore Capillary Gas Chromatography 1This standard is issued under the f i xed designation D7096; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of ...
While FER was around 1.3 until the boiling point of the fluid, it rose to around 1.55 when the surface temperature rose above the boiling point. As the surface temperature exceeds 78.3 °C, which is the boiling point of ethanol, double-phase cooling took place, where the fluid completely ...
Isobaric vapour–liquid equilibria of 1-bromobutane + chloroethane systems The boiling point data for the binary liquid mixtures of 1-bromobutane with 1,2-dichloroethane, 1,1,1-trichloroethane, and 1,1,2,2-tetrachloroethane were obtained over the entire composition range by using a standard Swieto...
Jujube extract is a reddish-brown, semi-liquid substance obtained by extracting jujube fruits using different concentration of ethanol in water. The unique jujube aroma and the mild sweet aroma of the extract are critical factors that determine product quality and affect consumer acceptability [5]. ...
The gel was destained in the destain solution (40% ethanol, 10% acetic acid and 50% ddH2O) and shaken at room temperature for about 3 h, while the gel solution was changed five times during this period. Chromatography. Ion exchange, hydrophobic and size-exclusion chromato- graphy were ...
A tunneling nanotube (TNT) is a newly discovered structure involved in cell–cell communication and is found in various types of cells. Here we identify S100A4 as an extracellular molecule and describe its role in attracting the growth direction of TNTs.
Topic: Solvent determination for recrystallization (Read 27442 times) 5and C6
TiO2 nanoparticles with a purity of 99.98% (Anatase) and with an average size of 30 nm were sonicated in ethanol and deposited onto the sample by drop casting, keeping the sample above the ethanol boiling point to achieve a homogenous deposition on the sample. TiO2 nanoparticles were selected ...
This effect can be explained by keeping in mind that the ethanol boiling point was approached. As the influence of temperature variations around 20 °C was negligible for the three analytes, and the sensitivity for ethanol determination was not critical, the heating step was not implemented, ...