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Purified glycerol for industrial use — Determination of density at 20 degrees C [Withdrawn without replacement] by ISO/TC 47 Chemistry is a reference work available to read on EtoBox.

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The product shall be free from substances in suspension and crystallized salts. A choice of two pyknometers is provided: the Gay-Lussac pyknometer and the Reischauer pyknometer. The principle by using the Gay-Lussac pyknometer consists in determination of the capacity by measuring the mass of water at 20 °C and measuring the volume of sample at 20 °C. Principle of the Reischauer pyknometer: calibration by measuring the masses of water*introduced up to the different graduation lines. Measurement of the mass of the volume of sample at 20 °C up to a certain graduation line. Both of the types: calculation of the quotient which results from dividing the mass of the sample by the volume of the pyknometer corresponding to this mass.

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Author

ISO/TC 47 Chemistry

Publisher

ISO

Published

1972

Language

EN

Category

reference