1 Yellow media without gas pocket-sugar utilization with production of acid only. 2  Red media (no change in media) -no change and no sugar utilization. 3  Pink media especially at the top, ignore gas-no sugar utilization with degradation of protein resulting in alkaline end products (this may be difficult to see).
With organic solvents with long alkane chain, such as n-hexadecane and n-decane, the water droplets become much larger and the microemulsion is unstable. In this case, solvent polarity may have become a determining factor and the long alkane chain was too hydrophobic to form a stable microemulsion with water.
1 The molecular formula of hexane is C6H14. 2  It is mostly a colorless liquid. 3  It has a melting point of roughly -139.54Â°F (-95.3Â°C) and. 4  The boiling point is 154.04Â°F (67.8Â°C). 5  It has a molar mass of 86.18 grams per mole (g/mol). 6  It is also a non-polar molecule, meaning that it is not soluble in water.exaneâs physical properties are eminent. 1  The molecular formula of hexane is C6H14. 2  It is mostly a colorless liquid. 3  It has a melting point of roughly -139.54Â°F (-95.3Â°C) and. 4  The boiling point is 154.04Â°F (67.8Â°C).