English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

This paper describes an apparatus suitable for determining accurately the boiling points of lubricating oils and other compounds of high molecular weight at temperatures and pressures below their decomposition points. The temperatures are determined by means of three thermocouples located at different heights in the vapor column, which, by their differences in temperature, give some indication of the purity of the sample, the readings of the three thermocouples being identical for a pure substance. The pressures are determined with a McLeod gage. Data are reported for pure di-n-butyl phthalate, for mixtures of di-n-butyl phthalate with 6.82, 10.62, and 18.75 mole percent of trio-o-cresyl phosphate, and for two lubricating-oil fractions obtained from successive distillations. CONTENTS Page

An apparatus for measuring the boiling points of lubricating oils and other compounds of high molecular weight at reduced pressures