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PubMed · 5109795

Blurred visual stimuli. I. A method for producing blurred stimulus patterns.

C E Krakau·G Stigmar
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C E Krakau, G Stigmar. 1971. Blurred visual stimuli. I. A method for producing blurred stimulus patterns.. https://doi.org/10.1111/j.1755-3768.1971.tb00957.x

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An experimental method for determining the Hildebrand solubility parameter of organic nonelectrolytes.

A three-solvent system was used to determine the Hildebrand solubility parameters of organic nonelectrolytes. The experimental Hildebrand solubility parameter represents a weighted average of the mole fraction solubilities of the solute in these three individual solvents (ethyl acetate, 1-propanol, and 1,2-propanediol). The solvent system estimated the Hildebrand solubility parameters of solutes within a range from 8.9 to 14.8 (cal/cm3)2(1). Deviations ranged from 0.8 to 12.9%, with the highest value at the extreme and well within 10% at the median. Estimation of the Hildebrand solubility parameters of solutes within a wider range and with somewhat better accuracy was made with a five-solvent system (hexane, ethyl acetate, 1-propanol, 1,2-propanediol, and water).

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