Melting point and normal boiling point correlations: applications to rigid aromatic compounds

1993 ◽  
Vol 33 (3) ◽  
pp. 437-440 ◽  
Author(s):  
Pahala Simamora ◽  
Allan H. Miller ◽  
Samuel H. Yalkowsky
Keyword(s):  
Melting Point ◽  
Aromatic Compounds ◽  
Boiling Point ◽  
Normal Boiling Point

The Realization of the Normal Boiling Point of Neon

Metrologia ◽  
1978 ◽  
Vol 14 (1) ◽  
pp. 9-13 ◽  
Author(s):  
R C Kemp ◽  
W R G Kemp
Keyword(s):  
Boiling Point ◽  
Normal Boiling Point

XXXI.—Precipitated Sulphur

1907 ◽  
Vol 27 ◽  
pp. 308-311 ◽  
Author(s):  
Alexander Smith ◽  
R. H. Brownlee
Keyword(s):  
Melting Point ◽  
Boiling Point ◽  
Pale Yellow ◽  
The Subject ◽  
Distinct Variety ◽  
Mobile Liquid

AbstractIn papers previously read before the Society, the behaviour of sulphur when heated has been the subject of investigation. It has been shown that the transition from a pale-yellow mobile liquid to a deep-brown viscous one, which occurs as the temperature rises in the neighbourhood of 160°, is due to the production from the mobile sulphur (Sλ) of another distinct variety (Sμ). The proportion of the viscous variety (Sμ) is about 4 per cent, at the melting point (114·5°). At 160° it has become 11 per cent., at 170° 19 per cent., and at the boiling point 34 per cent.

Zero Percent of Light Products in Mazut. Illusion or Reasonable Perspective?

2021 ◽  
Vol 626 (4) ◽  
pp. 48-52
Author(s):  
N. V. Karpov ◽  
◽  
N. N. Vakhromov ◽  
E. V. Dutlov ◽  
M. A. Bubnov ◽  
...  
Keyword(s):  
Diesel Fuel ◽  
Aromatic Compounds ◽  
Boiling Point ◽  
Fraction Composition

Yield of light products on atmospheric vacuum piepstill units is suggested to increase by means of making more heavy 95% boiling point of diesel fuel from 360°C (GOST requirements) to 365°C. Then fraction composition is getting lighter due to hydrogenating of aromatic compounds in heavy part of diesel fuel during hydrotreating. Test run confirmed the correctness of theoretical insights.

Exciplex-Based Vapor/Liquid Visualization Systems Appropriate for Automotive Gasolines

1993 ◽  
Vol 47 (6) ◽  
pp. 782-786 ◽  
Author(s):  
Lynn A. Melton
Keyword(s):  
Cross Talk ◽  
Spectral Region ◽  
Boiling Point ◽  
Automotive Gasoline ◽  
Normal Boiling Point ◽  
Tertiary Amines ◽  
Temperature Range ◽  
Exciplex Emission ◽  
Visualization Systems ◽  
Vapor Liquid

This paper reports the development of exciplex-based vapor/liquid visualization systems based on exciplexes formed from tertiary amines and fluorine-substituted benzene and/or toluene. These systems are expected to be virtually coevaporative with solvents (fuels) boiling in the temperature range 70 to 110°C and thus are expected to track the vaporization of automotive gasoline effectively. A system consisting of 10% triethylamine/0.5% fluorobenzene/89.5% hexane should be coevaporative with a normal boiling point of 69°C. A system consisting of 10% n-propyldiethylamine/0.5% 4-fluorotoluene/89.5% isooctane should be coevaporative with a normal boiling point of approximately 100°C. Although the coevaporation of these systems is excellent, the exciplexes revert to varying extents to excited monomer at temperatures near 100°C. Thus there is considerable cross talk from the liquid into the vapor spectral region. The tertiary amines generally require excitation at wavelengths below 250 nm; the fluorobenzene or 4-fluorotoluene can be excited at 266 nm. Monomer emission peaks at 290 nm; exciplex emission peaks at 350 nm.

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