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Flow of vegetable oil‐pesticide blank‐formulation mixtures through agricultural spray nozzles
Author(s) -
Whitney R. W.,
Roth L. O.,
Underwood T. L.
Publication year - 1986
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02546043
Subject(s) - blank , viscosity , nozzle , soybean oil , cottonseed , vegetable oil , oil viscosity , chemistry , materials science , thermodynamics , composite material , food science , physics
Properties of specific gravity, viscosity and flow rate were measured for cottonseed and soybean oil mixed with selected blank pesticide formulations without the active ingredient, i.e., blank‐formulations. Fluid temperature ranged from 5 to 70 C for the measurements. Specific gravity of soybean oil mixtures was found to vary approximately 5% inversely with temperature over the temperature range. Above 65 C the mixtures exhibited approximately the same viscosity. Cottonseed oil viscosity remained less than the soybean oil viscosity over the entire range of temperatures studied. Addition of blank‐formulation materials resulted in more reduction in viscosity at lower temperatures. Flow rates were measured over the temperature range for selected mixtures through different sizes and types of hydraulic spray nozzles. Fitted equations were derived to predict the necessary pressure correction for temperature for each nozzle and mixtures tested.