propane

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propane,

CH3CH2CH3, colorless, gaseous alkanealkane
, any of a group of aliphatic hydrocarbons whose molecules contain only single bonds (see chemical bond). Alkanes have the general chemical formula CnH2n+2.
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. It is readily liquefied by compression and cooling. It melts at −189.9°C; and boils at −42.2°C;. Propane occurs in nature in natural gas and (in dissolved form) in crude oil; it is also a byproduct of petroleum refining. It is used chiefly as a fuel. For this purpose it is sold compressed in cylinders of various sizes, often mixed with other hydrocarbons, e.g., butane. Propane fuel is used in a type of cigarette lighter and in portable stoves and lamps.

Propane

 

CH3CH2CH3, a saturated hydrocarbon that exists as a colorless, odorless combustible gas with a melting point of –187.7°C and a boiling point of –42.1°C. Its flammability limits when mixed with air are 2.1–9.5 percent (by volume). Propane is found in natural gas, casinghead gas, gases obtained from CO and H2, and the gases produced during petroleum refining. In industry, the catalytic dehydrogenation of propane yields propylene, and propane nitration produces nitromethane (mixed with nitroethane and nitropropane). Propane is also used as a solvent in, for example, removing alkanes from petroleum products. When mixed with butane, it can be used as an illuminating or household gas.

propane

[′prō‚pān]
(organic chemistry)
CH3CH2CH3 A heavy, colorless, gaseous petroleum hydrocarbon gas of the paraffin series; boils at -44.5°C; used as a solvent, refrigerant, and chemical intermediate.

propane

a colourless flammable gaseous alkane found in petroleum and used as a fuel. Formula: CH3CH2CH3
References in periodicals archive ?
This s evaluated the use of R-290 (propane) in refrigerators for residential and commercial applications.
As Midea celebrating its 50th anniversary this year, the core technology of R-290 was displayed along with other Midea products recently at the Mostra Convegno Expocomfort (MCE) 2018, a leading international exhibition dedicated to comfort and living technology in Milan, Italy.
The non-flammable fluids are squares; the 2L fluids are triangles, and the A3 (R-290) is a circle.
The Copeland Scroll ZB*KCU range, with a medium temperature cooling capacity from 2 to 9 kW (0.6 to 3 ton), has six models for r-290 available, covering refrigeration applications such as self-contained display cases, condensing units for cold rooms or even multi-compressor refrigeration chiller systems.
Jabbour (2004) measured the LPL and the UPL for R-290, R-152a, and R-32 using different diameter tubes.
The third was a cascade system with R-290 (propane), R-717 (ammonia), R-404A or R-134a on the high pressure side (all alternatives were analyzed) chilling a pumped C[O.sub.2] secondary loop on the MT side and C[O.sub.2] DX on LT side.
Table 1: Comparison of Refrigerant Properties ASHRAE 34 BV LFL Flammability cm/sec %v/v Classification (in/sec) Propane 3 39 2.1 R-290 (15.4) Ammonia 2L 7.2 16.7 R-717 (2.8) R-32 2L 6.7 14.4 (2.6) R-1234yf 2L 1.5 6.3 (0.59) MIE HOC mJ MJ/kg (Btu) (Btu/lb) Propane 0.25 50.4 R-290 (2.36 x [10.sup.-8]) (21,713) Ammonia 300 18.6 R-717 (2.84 x [10.sup.-4]) (8,013) R-32 100 9.6 (9.47 x [10.sup.-5]) (4,135) R-1234yf 5000 10.7 (4.73 x [10.sup.-3]) (4,609)
Refrigerants "Natural refrigerants (R-290, R-600a, C[O.sub.2])."
Its AE2 compressors and condensing units now operate with HFC refrigerants and R-290 (propane).
Around the show floor, the big Chinese manufacturers, such as Gree and Midea, exhibited products using R-32, R-290 and R-161.
The three hydrocarbon refrigerants approved as acceptable substitutes, with use conditions, are propane (R-290), isobutene (R-600), and a blend of ethane, propane, butane and isobutene known as R-441a.
At Chillventa, Tecumseh announced an increased range of rotary compressors for R-134a and R-290.