Isobutane CAS 75-28-5 R-600a R600A C4H10 99% Non Toxic Refrigerant
ISOBUTANE is a colorless gas with a faint petroleum-like odor.
ISOBUTANE is shipped as a liquefied gas under its vapor pressure.
Contact with the liquid can cause frostbite. ISOBUTANE is easily
ignited. The vapors are heavier than air. Any leak can either be
liquid or vapor. ISOBUTANE can asphyxiate by the displacement of
air. Under prolonged exposure to fire or intense heat the
containers may rupture violently and rocket.
ISOBUTANE is incompatible with the following: Strong oxidizers
(e.g., nitrates & perchlorates), chlorine, fluorine, (nickel
carbonyl + oxygen) .
|Vapor Residue, PPm||≤100|
|Appearance||Colorless, No turbid|
|Odor||No Strange Stench|
Isobutane is used as a refrigerant.The use in refrigerators started
in 1993 when Greenpeace presented the Greenfreeze project with the
German company Foron. In this regard, blends of pure, dry
"isobutane" (R-600a) (that is, isobutane mixtures) have negligible
ozone depletion potential and very low Global Warming Potential
(having a value of 3.3 times the GWP of carbon dioxide) and can
serve as a functional replacement for R-12, R-22, R-134a, and other
chlorofluorocarbon or hydrofluorocarbon refrigerants in
conventional stationary refrigeration and air conditioning systems.
In the Chevron Phillips slurry process for making high-density
polyethylene, isobutane is used as a diluent. As the slurried
polyethylene is removed, isobutane is "flashed" off, and condensed,
and recycled back into the loop reactor for this purpose.
Isobutane is also used as a propellant for aerosol cans and foam
Isobutane is used as part of blended fuels, especially common in
fuel canisters used for camping.
Isobutane is also used as a raw material in the manufacture of
propylene oxide, where it is oxidized to tert-butyl hydroperoxide
and subsequently reacted with propylene to yield propylene oxide.
The tert-butanol that results as a by-product is typically used to
make gasoline additives such as methyl tert-butyl ether (MTBE).
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