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  • Description: volatile
(7 results)



Display: 20

    • Ball grinding machine

    • Manufacturing and Testing Ink Pigments
    • A ball grinding machine used for grinding pigments for inks. The pigment is placed in the jar with the stainless steel balls and the jar is then clamped in the machine and revolved for a number of hours to obtain a fine grinding. The ball grinding...
    • Synthetic lilac perfume

    • Aromatics-synthetic perfumes
    • Large bottles of terpineol, the chief constituent of synthetic lilac perfume. Reflected in the vessels of crystal clear oil are the large drums of the raw materials for perfume manufacture. Until the lilac odor was synthesized-one of the...
    • Synthetic lilac perfume

    • Aromatics-synthetic perfumes
    • An intermediate step in making synthetic lilac perfume-the distillation of terpineol. The crude terpineol oil is vaporized in a vacuum still, the vapors are purified in a fractionating column, cooled in a condenser and finally the pure terpineol...
    • Synthetic lilac perfume

    • Aromatics-synthetic perfumes
    • An intermediate step in making synthetic lilac perfume-crude terpin hydrate flowing into the large vat where it is filtered and purified. Until the lilac odor was synthesized-one of the outstanding achievements of the chemical laboratory in...
    • Perfume research

    • Aromatics-synthetic perfumes
    • About two dozen constituents, besides terpineol, combine to make synthetic lilac perfume. Mr. Theodore Hoffman, director of the DuPont perfume laboratories and an outstanding authority on perfumes, is shown at the scales of his laboratory...
    • Perfume research

    • Aromatics-synthetic perfumes
    • Theodore Hoffman, director of the DuPont perfume laboratories and an outstanding authority on perfumes, applies the last test to a bottle of perfume-which depends on the olfactory sense and not on formulas, at the New Brunswick, New Jersey factory...

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