PROPANGAS offers solutions that respect the environment, opting for the distribution of clean energy, meaning LPG.

LPG, liquefied petroleum gas, a mix of alkane hydrocarbons with low molecular weight. LPG is transported on road with tank lorry, via railway with rail tankers and via sea with gas motorship.
The mix mainly consists of propane and butane, with the occasional presence of small quantities of ethane or unsaturated hydrocarbons, such as ethylene and butylenes.
LPG is named as such because the compounds at ambient temperature and atmospheric pressure are in a gaseous state: they are liquefied through compression at relatively modest pressures between 2 and 8 bar, to reduce encumbrance and improve transport convenience.
LPG is a fuel easy to obtain, with low environmental impact and high energy and heating performances. It is extremely flammable but non-toxic.
LPG is generally considered one of the cleanest source of energy because it does no pollute the soil, water and watertable. Thanks to the low content of sulphur and total combustion, with modest quantities of residues, it contributes in reducing the environmental impact caused by pollution linked to its combustion, favouring better air quality and reduction of greenhouse gases.
Chemical composition
The LPG composition is not exactly defined, in fact supply specifications indicate tolerances with regards to composition and density; commercial propane has a density between 505 and 530 kg/m3 with a heat value that must not be lower than 10.950 kcal/kg (or 45.8 MJ/kg), and maximum sulphur content of 50 ppm.
Therefore the components are selected among butane, propane and pentane, with propane as main element.
Typical odour
LPG is odourless and is odorized with ethanethiol that confers it a strong and acrid smell, in order to detect any leaks also without specific instruments (international standard EN 589; Law no. 1083 of 6th December 1971 -  Ministerial Decree 7th June 1973 - UNI-CIG 7133 standard, edition of December 1994). In addition to be odourless, LPG is also colourless: for this reason, refineries or similar structures are bound by law to add a yellow colouring agent in addition to the odorant.
LPG at gaseous state boasts a higher density than air therefore it does not diffuse in the atmosphere; in case of accidental spills, it tends to concentrate, stagnating on the ground and cavities, posing extremely dangerous fire hazards due to accumulation.


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