Some emulsifying properties of polyoxyethylene sorbitol tetra oleate were investigated. This compound has multi-chain structure in a molecule and relatively large molecular weight. It is expected that this type of surfactant has specific properties which have never been observed in other ordinary surfactants.
Polyoxyethylene sorbitol tetra oleate was synthesized by addition of ethylene oxide to sorbitol, and then it was esterified with oleic acid.
The phase inversion temperature, the stability and the size-distribution of the emulsion were determined in order to investigate the emulsifying activities of this surfactant.
The result indicates that this surfactant has an effective performance as emulsifier at even low concentration and the emulsion is stable for coalescence. And also indicates excellent emulsifying activities to relatively high polar oils such as synthetic ester, vegitable oil and higher alcohol and the size-distributions of these emulsions are extremely sharp.
This paper describes the effective properties of polyoxyethylene sorbitol tetra oleate as emulsifier.

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The action of an anchor type agitator, equipped with an emulsification kettle, to the emulsifying process of oil and water has been investigated by measuring the size of emulsion particles.
The relation, as shown by the following equation, has been obtained between rotation speed (R; rpm) of an agitator and volume-surface mean diameters (Dvs; micron) of emulsion particles, logDvs=-a⋅R+b where both a and b are constants for each emulsification kettle.
When emulsification kettles of a similar type are used for the emulsion preparation, the ratio of a in the above equation to the square root of the blade diameter (L; mm) of the agitator becomes nearly constant. The relation, a/√L=constant, enables us to estimate proper rotation speed of each agitator for performance of the same agitating effect at the scale up.

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In order to study the distribution of phthalates (D. M. P., D. E. P., D. B. P., D. E. H. P.) Carbonyl-¹⁴C-phthalate was administrated orally to the rats, and mice;
The highest concentration of radioactirity in blood and tissue was observed at about 30min-1 hrs after administration and gradually decreased,
The relatively highest concentration of radioactivity was found in the kidney and liver; Radioactivity was rapidly excreted almost in the Urin and ratio of excretion in feces and urine, amounted to 4% and 90% (D. M. P.) 25% and 82% (D. E. P.) 20% and 41% (D. B. P.) 22% and 41% (D. E. H. P.) respectively within 144hr,

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