1939
DOI: 10.1093/jee/32.4.587
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Derris as a Toxic Supplement to Oil Emulsions for the Control of Purple Scale*

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“…Glyc eryl dioleate is surface-active, as is shown by the fact that it lowers interfacial tension, and it is a good solvent for derris or cubé extractives, so that at the interface between the oil and the resin particle it apparently acts as a solvent or solubilizer to bring the rotenone plus deguelin more rapidly into solution in the oil. English (1939) greatly increased the efficiency of an oil-derris mixture when he used diglycol oléate as an emulsifier, but he used this solute at such a high concentration in the oil (10 per cent) that the solute itself might have been the carrier of the toxic ingredients of the derris powder.…”
Section: Eilgardiamentioning
confidence: 99%
“…Glyc eryl dioleate is surface-active, as is shown by the fact that it lowers interfacial tension, and it is a good solvent for derris or cubé extractives, so that at the interface between the oil and the resin particle it apparently acts as a solvent or solubilizer to bring the rotenone plus deguelin more rapidly into solution in the oil. English (1939) greatly increased the efficiency of an oil-derris mixture when he used diglycol oléate as an emulsifier, but he used this solute at such a high concentration in the oil (10 per cent) that the solute itself might have been the carrier of the toxic ingredients of the derris powder.…”
Section: Eilgardiamentioning
confidence: 99%