Heptane Molecular Structure
is the straight-chain alkane with the chemical formula H3C(CH2)5CH3
or C7H16. It is the zero point of the octane
its many isomers) is widely applied in laboratories as a totally
non-polar solvent. A liquid, it is ideal for transport and storage.
In the grease spot test, heptane is used to dissolve the oil spot
to show the previous presence of organic compounds on a stained
paper. This is done by shaking the stained paper in a heptane
solution for about half a minute.
into heptane is a means by which aqueous bromine may be distingiushed
from aqueous iodine. In water, both bromine and iodine appear
brown. However, iodine turns purple when dissolved in heptane,
whereas the bromine solution remains brown.
commercially available as the rubber cement solvent "Bestine"
and the outdoor stove fuel "Powerfuel" by Primus.
is the zero point of the octane rating scale. It is undesirable
in petrol, because it burns explosively, causing engine knocking,
as opposed to branched-chain octane isomers, which burn more slowly
and give better performance. It was chosen as the zero point of
the scale because of the availability of very high purity n-heptane,
unmixed with other isomers of heptane or other alkanes, distilled
from the resin of Jeffrey Pine and from the fruit of Pittosporum
resiniferum. Other sources of heptane and octane, produced from
crude oil, contain a mixture of different isomers with greatly
differing ratings and do not give as precise a zero point.
-- Lennard-Jones Molecular Dynamics, Peptide synthesis animation,
chime molecular modeling tutorials...
-- Pythagorean Theorem, Probability Theorem, Pascal'sTriangle, Integration
Applet, Vectors, Virtual Abacus
AND SPACE SCIENCE -- Sun, moon and earth, Azimuth
and Elevation, Earth Interior, Impact Crater, Atomic Emission, Planetary
-- Mechanics, Levers, Pulleys, Inclined Planes, Pendulum, Light
and Optics, Electricity and Magnetism..
Need a Browser or Plug-in to view
For Chime plug-in
Download from MDL
For additional pdb
Free 3D Molecular Modeling Software
Some or all of this text has been obtained from Wikipedia,
the free encyclopedia. All text is available under the terms of the
GNU Free Documentation License (see Copyrights for details). Disclaimers.
Wikipedia is powered by MediaWiki, an open source wiki engine.