Neon is often used in signs and produces an unmistakable bright
reddish-orange light. Although still referred to as "neon", all
other colors are generated with the other noble gases or by many
colors of fluorescent lighting.
Neon is used in vacuum tubes, high-voltage indicators, lightning
arrestors, wave meter tubes, television tubes, and helium-neon
lasers. Liquefied neon is commercially used as a cryogenic
refrigerant in applications not requiring the lower temperature
range attainable with more extreme liquid helium refrigeration.
Both neon gas and liquid neon are relatively expensive – for small
quantities, the price of liquid neon can be more than 55 times that
of liquid helium. The driver for neon's expense is the rarity of
neon, which unlike helium, can only be obtained from air.
The triple point temperature of neon (24.5561 K) is a defining
fixed point in the International Temperature Scale of 1990.
Impurity content (ppm)
O2<0.5, N2<2, CO<0.5, CO2<0.5, Ar<1, He<2, THC<0.1, Moisture<0.5
19.23 ft3/lbs at 70oF
Vapor Pressure@70oF (21.1oC) = Above the critical temp. of -379.8oF (-228.8oC)
Liquid Density at Boiling Point
Gas Density at 70oF. 1 atm
Solubility In Water
Specific Gravity (Air=1)
@70oF (21.1oC) = 0.70
Appearance And OdorColorless, odorless gas.